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HP 12C Financial Calculator

Mfg # 12C#ABA CDW # 154342 | UNSPSC 44101800

Know your gear

The 12c is the industry staple in financial calculators. Millions of users the world over rely on this time-tested performer. Millions of users know that the 12c has the power to ensure that its more than 120 built-in functions are available when you need them. This calculator is the smart choice, the industry’s choice.

Features
Efficient RPN data entry

Over 120 built-in functions

Calculates NPV, IRR, TVM, cash flows, bonds, amortization, and depreciation.

Calculates bond price and yield to maturity

Calculates linear regression, standard deviation, mean, and weighted mean

Cumulative statically analysis

Allowed on the CFP, CFA, and Capital exams

Formulas:
TVM (loans, savings and leasing)
Amoritization
Bond price and yield to maturity
Register based cash flow analysis NPV, IRR
Memory for 20 cash flows
SL, DB, SOYD depreciation methods
% change, % of total
Keystroke programming
Memory capacity: 99 steps
Entry system logic
Cumulative statistical analysis
Std. deviation, mean, weighed mean
Linear regression
Forecasting, correlation coefficient
Date arithmetic

Specifications:
Dimensions: 5"x3.1"x0.6"

What's in the Box?
Owner's Manual
Batteries
Carrying Case

This item was discontinued on April 25, 2022

Enhance your purchase

HP 12C Financial Calculator is rated 3.80 out of 5 by 88.
Rated 5 out of 5 by from The world's best Since 1976 when I enrolled at Digital Equipment Corp. gave me a HP 12c Financial Calculator, we are in 2011 and yet I still use. It's great is damaged I would buy another.
Date published: 2011-08-25T00:00:00-04:00
Rated 5 out of 5 by from Poor manufacturing quality. I've been an HP Calculator fan for 40 yrs, since my first Made-in-the-USA HP-41C in the early 1980's - which still works! Unfortunately, the quality of my recent Made-in-China HP-12C is awful. Barely used, the keys are already malfunctioning, machine turns off in the middle of calculations,... the machine is completely useless. It's not straight, rocks on a flat surface. Save your money. Don't buy these machines. Make HP accountable for their quality! Make it here or close your business!
Date published: 2020-10-20T00:00:00-04:00
Rated 5 out of 5 by from Display unreadable after one year. Used an HP12C for 30 years. One I bought in college gave out last year after years of hard use. Purchased new one last year. Lasted one year and is now useless. Issue is that display characters are unreadable. If HP sends me a note saying they have improved quality I would buy again, but until that time I cannot recommend this calculator. Note I would gladly pay double what the current price is for this device if quality was adequate. Now all I have to do is find another RPN calculator!
Date published: 2015-10-02T00:00:00-04:00
Rated 5 out of 5 by from Extrememely bad quality. Only worked for two days I got a HP12c as a present. The first day worked OK, but the second day the upper part of all digits disappeared. I am really surprised for this, as the previous HP calcultators I have, worked perfect for years and this one only lasts for two days. I have followed the HP procedure to reset the calculator but it does not solve the malfunction of the display. I always thought this could not happen to a HP calculator.
Date published: 2015-12-23T00:00:00-05:00
Rated 5 out of 5 by from Buttons Dont work properly Some of the buttons don’t work Without exerting a lot of pressure. Particularly the decimal point button. How do I do I return the product?
Date published: 2018-02-18T00:00:00-05:00
Rated 5 out of 5 by from HP 12C I have used the HP 12C since the mid 1980s and prefer the 12c over other calculators. My first 12c worked for more than 20 years before being damaged and replaced. The 12c Platinum does not come close to the original as since 2009, I have had to replace three (3) of them that became unreliable. Of course, I am going to buy another HP 12C, but hope to get more than two years use from it. It is still the best.
Date published: 2013-06-28T00:00:00-04:00
Rated 5 out of 5 by from A Classic! I bought the HP 12C Financial Programmable Calculator to replace my boyfriend's 25+ year old calculator of the same model. His old calculator's #5 key was working intermittently. The new calculator was a big hit and made his day :-) The ordering and shipping process went well too. Thanks for being such a great U.S. company!
Date published: 2019-09-11T00:00:00-04:00
Rated 5 out of 5 by from A REAL WORKHORSE The Gold-Case HP-12C is a workhorse; does just about everything most students will require. A plus is that the device seemingly lasts a lifetime! I have two of them. The RPN ("Reverse Polish Notation") feature makes it easier to do "chain" and arithmetic calculations. I'd like to add that the original 17BII along with the 19BII were the best devices for those who would or could write complex Solver-Equations, equations that required LET and GET capability.
Date published: 2019-11-16T00:00:00-05:00
Rated 5 out of 5 by from Commercial Real Estate Calculators I was told by many commercial real estate agents to buy the H.P. 12c calculator, it was worth the money and was a 'must have!' After purchasing it, I learned that it had limitted preprogramed functions for real estate and had nothing that a commercial agent would most commonly need for investment properties. i.e. R.O.I., Cash Flow, C.A.P. Rate, etc. Instead it was mainly for financing of loans, depreciation, and renting vs. owning affordability. Had I known that I would have to program it for commercial stats, especially having to learn how to program it which is unique in itself, I would never have bought this item. In fact, I am going to sell it to another person in the next class I take. If I can get my money back, I'll purchase instead the "Qualifier Plus IIIFX" for $79.95 + taxes, which does have the basics for commercial investment properties and it looks better. Technology has changed since the 12c was introduced in the 1980's and getting a calculator specifically designed for real estate is better than a financial calculator that can be used for commercial real estate.
Date published: 2012-04-14T00:00:00-04:00
Rated 5 out of 5 by from Quality Concerns I have purchased several HP 12cs over the years but I'm afraid the quality has slipped substantially. When I opened my recently purchased 12c, the black 'pleather' case was stuck to the packaging and whatever black man made material was used to make the case came off so I have a case that is marred on a brand new unit! Still a fan of the features and functionality but the quality concerns are disappointing to say the least.
Date published: 2012-06-17T00:00:00-04:00
Rated 5 out of 5 by from These are the best I had a 10b a few years ago and was disappointed with it. I have used various hp scientific calculators for work and school but still need to perform business math at the same time. I finally gave in and purchased one. It's great for date calculations and financing. These calculators have been around for 30 years and quite a few people still use the same model. They are built very well.
Date published: 2011-07-24T00:00:00-04:00
Rated 5 out of 5 by from Super calculator Hp has been making this calc for 30 years. Little has changed; nothing needs to be changed. This is pure, robust, calculation at its finest. Highly recommend. This is my second one in 30 years. The first was stolen by a curious baboon in Africa about 6 years ago. I waited until the current iteration to get a baboon-proff specimen. Don't know whether hp guarantees the current model against baboonv but it sure is sturdy. Hooray hp. Keep making as durable as the are.
Date published: 2011-09-18T00:00:00-04:00
Rated 5 out of 5 by from None better I've used this calculator for 30 years. Hasn't changed (except the speed) and it doesn't have to. Perfect for the financial or business pro.
Date published: 2013-02-16T00:00:00-05:00
Rated 5 out of 5 by from The display is bad In natural light the display is difficult to read. Numbers appear where they should not and the comma shows through the period. It's blurry.
Date published: 2013-08-11T00:00:00-04:00
Rated 5 out of 5 by from I have been using an HP-12c calculator since 1971. My 1971 HP-12c was finally retired a couple of years ago. Its only problem was the "2" button was faulty. I had purchased a "Platinum HP-12c" about three years ago to replace my original 12c. The pillow switches below the keys failed right away. By that time HP quit servicing the calculators. Stupidly, I bought another Platinum 12c and it too was defective in just months. I could not survive without a trusty HP 12-c and bought another one of the original 12-c design just recently. It seems to work alright and my fingers are crossed that it will finally take its place as the reliable HP calculator that was my side kick for so many years.
Date published: 2017-12-26T00:00:00-05:00
Rated 5 out of 5 by from Over 20 years and still going I have used other brands. They all wore out in a year or two. Bad keyboards. Poor functions. I finally purchased the 12c and I have never regretted it. THe RPN enter sequence is different thatn the others but took me about 5 minutes to get comfortable with it. I notice a low review. I imagine that it was someone whe did not read the manual and use RPN. At the current price it is a steal.
Date published: 2009-07-05T00:00:00-04:00
Rated 5 out of 5 by from Warped The first HP12C I had lasted 11 years. This new one I ordered directly from HP works fine, except it came out of the box warped. Will not lay flat on my desk. Have to hold or it will wobble when entering data.
Date published: 2021-09-30T00:00:00-04:00
Rated 5 out of 5 by from 23 years and going strong! I purchased my HP Financial Calculator in college. It was a requirement for my core Accounting courses. That was 23 years ago! It still works great! I used it through my college studies, in my accounting career, and now it sits beside our home computer. We use it every day. It's great for loan comparisons, such as when buying a car or house! Takes all the guess work out! We love it! Thanks HP!
Date published: 2009-06-28T00:00:00-04:00
Rated 5 out of 5 by from Went bad way too soon. I got my first HP 12C (American made) in 1989. It worked flawlessly until I left it on the seat of my car with the window open while it was raining. Over the last 15 years, I've purchased 3 new HP 12Cs. After about two years, the keys start sticking, keystrokes repeat themselves, keystrokes don't register, etc. The calculators always start to go bad after the warranty has expired and HP has never rectified the problem. If you look on other sites, many users have expressed the same concerns. You simply cannot be confident that your input is accurate. HP has to know this is a problem. It would be nice if they did something about it.
Date published: 2020-11-29T00:00:00-05:00
Rated 5 out of 5 by from A Tank Picked up my 12C at a yard sale for $5! I've used it for years and love the durability and the feel of it. I'm addicted to RPN since I got my 12C great product. This is my all time favorite among dozens of calculators.
Date published: 2011-02-05T00:00:00-05:00
Rated 5 out of 5 by from Don't buy it - It's not made in us like original keys are not hard like original but tommy, printed on so it will wear out not encasted like original but it does looks like the original a little bit !! Don't waste your money it won't this calculator won't last like the original famous HP12C
Date published: 2013-01-05T00:00:00-05:00
Rated 5 out of 5 by from Calculation Corrections I've used this product for almost 20 years for financial and accounting applications and it remains as reliable as ever. For those who referenced incorrect mortgage calculations, you have your settings programmed to calculate at the 'Beginning' of the monthly billing cycle, rather than the 'End'. To change, simply press the blue 'G' key and then the #8 key (end). In your scenario, the $200,000 mortgage at 5% interest for 30 years will result in $1,069.12 if you have it set to calculate at the Beginning cycle or will result in $1,073.68 if set to calculate at the 'End' cycle. You can toggle between Beginning and End cycles by pressing the blue 'G' key then pressing 7 (for Beginning) or 8 (for Ending).
Date published: 2014-03-27T00:00:00-04:00
Rated 5 out of 5 by from HP-12 I bought one of the first HP-12's out (I think it was 1978 & cost $119.95). I still use it today as I have every day since then. I have been a real estate broker, appraiser, & mortgage auditor. I have even taught classes in the use of the HP-12. The use has been terrific ! I have a couple of programmed functions I use all the time. The numbers have worn off the back; HP has replaced the pad several times, but the calculator never fails. It is impossible to outdo this unit for the money. Howelse could it still be in production this long?
Date published: 2009-04-04T00:00:00-04:00
Rated 5 out of 5 by from Display Problems, LCD showing partial numbers. The calculator functions but LCD display not working.
Date published: 2017-05-10T00:00:00-04:00
Rated 5 out of 5 by from Perfect I got an original HP-12C with a first edition owners manual for three dollars at a thrift shop. Love the programmable feature and everything else about it.
Date published: 2017-06-23T00:00:00-04:00
Rated 5 out of 5 by from The best business and personal calculator! Once you get used to RPN, you won't want to go back to a conventional calculator. The finance functions are great for my business and for my personal finances.
Date published: 2018-02-11T00:00:00-05:00
Rated 5 out of 5 by from A long time ago! Surprised to see the 12C still pumping along. I bought mine about 1976. YES 1976. I still use it everyday, and went one time over three years on a set of batterys. You will never regret buying this HP product.
Date published: 2009-06-27T00:00:00-04:00
Rated 5 out of 5 by from Display Problems I bought this calculator and I like it. The only problem is now the display segments don't all work. Internet research indicates that I need to take it apart and fix the ribbon connector to the display. I will try that but it is disappointing. I own an HP-45, HP-41CV and an HP-50G. The best quality calculator was the 41-CV. I will take apart my 12C and try to fix it. If I can't fix it the 12C was the most expensive for the number of usable keystrokes I got from it.
Date published: 2017-07-04T00:00:00-04:00
Rated 5 out of 5 by from Best calculator The best financial calculator! Ease of use! Calculates loan interest, payments stream, and compounds interest! Would have no other!
Date published: 2021-01-25T00:00:00-05:00
Rated 5 out of 5 by from Outstanding product I have owned the same HP12C for 25 years (since 1982), when it was the latest and greatest-it still is. After several years of dormancy, I recently purchased a new button cell battery, and it fired right up, just like 1982. This calculator performs financial calculations like nothing else handheld, including amortizations, bond yields, depreciation, present values,internal rates of return, and programmed functions. It is just as relevant and productive today as the day I bought it 25 years ago. I can perform complex financial calculations as quickly with my 12C as I can with my $700 PC. The operating manual is thoroughly and completely documented and provides immediate throughput explanation for anything you intend to perform.
Date published: 2008-03-20T00:00:00-04:00
Rated 5 out of 5 by from My 12C Now retired from Mortgage and Real Estate, I still use my 12C. that I bought in 1981 for $150, plus a 2nd one from a few years latter. I used the previous HP #ed financial calculator prior to that. I would give all three a 10 if I could. Larryd
Date published: 2009-07-04T00:00:00-04:00
Rated 5 out of 5 by from this is a great unit I used my old one for over 20 yeaaars then retired and it broke so I got a new one
Date published: 2014-05-03T00:00:00-04:00
Rated 5 out of 5 by from excellent product I had a 12c calculator for 20+ years and when it got ruined and would no longer work I didn't hesitate to immediately order another one. I didn't even consider getting any other type or brand of financial calculator even with all the new technology out there. This does everything you could possibly need it to do and is more than reasonably priced.
Date published: 2011-08-27T00:00:00-04:00
Rated 5 out of 5 by from Still the best one out there. I started using the 12C in 1974 while working for a Big-8 Accounting firm. I still use one today and just purchased my 4th one. They last a long time. I even have a 12C app on my iPhone.
Date published: 2013-04-17T00:00:00-04:00
Rated 5 out of 5 by from I bow my head in respect........ Today was the last day of calculation for my HP12C. It gave me 25 years of faithful service.
Date published: 2009-04-22T00:00:00-04:00
Rated 5 out of 5 by from HP 12C - rock solid I've had and used an HP12c calculator for over 20 years.....the same one. Built like a tank, still performs flawlessly. I'm not surprised that after all these years HP is still producing them. Mine has been a constant companion....actually been with me longer than my wife. Highly recommend this product.
Date published: 2011-03-19T00:00:00-04:00
Rated 5 out of 5 by from miss calculation I am in real estate and use hp-12c to calculate mortgages and other financial calculation for clients and am surprised that I have not been sued yet. THIS CALCULATOR GIVES OUT WRONG ANSWERS, FOR EXAMPLE $200,000.00 MORTGAGE AT 5% OVER 30 YEARS THE CALCULATOR'S ANSWER IS $1,069.19, BUT THE CORRECT ANSWER IS $1,073.68 OR 300,000.00 AT 5.875% OVER 15 YEARS THE CALCULATOR ANSWER 2,499.12 AND THE CORRECT ANSWER IS 2,511.36. I own 2 HP-12c and they both give out the wrong answer. I figured this out when I bought my own house and noticed a big difference in my actual payment with hp-12c's number and ran the numbers in the MS-Excel. Excel's number match my actual mortgage payment. Am I not using my HP correctly or HP is that careless?
Date published: 2013-09-02T00:00:00-04:00
Rated 5 out of 5 by from Great tool, but fix the buttons I've been using a 12C for 25 years - its a great tool. When sadly mine went missing (this one after at least 15 years), I was pleased to see it is still available and immediately ordered one. It is in all respects the same calculator except for the feel of the buttons. I know it may seem fussy, but these buttons have a cheap, tinny, hollow feel to them when pressing - not nice. The previous model, by contrast, had a very solid feel.
Date published: 2012-02-10T00:00:00-05:00
Rated 5 out of 5 by from Used to be a great product Am on my 3rd one in 30 years. First 2 were great. 3rd one didn't last a year before the display got messed up. only some of the numbers display properly. Not the batteries. The device works but you can't read the numbers in the display very well. This last one barely lasted a year. Know they don't make stuff like they used to but this is rediculus considering what I paid for it. Is there any way to shake the LCD display so that it is legible again???
Date published: 2015-09-29T00:00:00-04:00
Rated 5 out of 5 by from shocked I was shocked when, perusing HP printers via an add on my e-mail, I wandered around to look into calculators, just to see what was up etc. When I scrolled down to see if the 12C was still around after seeing all the photos of the newer, cheaper models that are out today,I was amazed to see the 12C exactly as it was in 1983 when I purchased mine. What an awesome little calculator it is. buttons, display, battery life, all perfect. In a way, it's like the shark or the cockroach, in that the evolutionary line seems to have reached a perfection of sorts. Mine still works great when I use it; and my manual, although bound with duct tape, is still as helpful as ever.
Date published: 2010-12-03T00:00:00-05:00
Rated 5 out of 5 by from Fast 12C, flawed keyboards from CY factory The HP 12C, now in "+" form 150x as fast as original HP12C. The HP 12C remains the icon of financial mastery even today, and the lightening fast speed is a delight. Production runs from the Inventec CY factory (with the large % sign) can have unresponsive or sticky keys, though. Mine repeats numbers. I have used HP 12C's daily since the USA 1982 model. Other manufacturers may have calculators that run PV's, but only HP made a real-world financial calculator.
Date published: 2013-07-14T00:00:00-04:00
Rated 5 out of 5 by from Learning curve This calculator has the most unusual way of input the numbers you need. No very good. Went back to my Ti 84.
Date published: 2019-07-08T00:00:00-04:00
Rated 5 out of 5 by from Considering alternative for the once supreme HP12C Over the last several years, the what used to be "amazing quality" of the last couple HP's I've purchased (yes a couple in as many years) has been absent.... Prompting me to waist even more of my time to write this review. A myriad of problems from sticking keys to duplicate numbers when a key is pressed, to no number registering when a button is pressed..... I deal with millions of dollars everyday. We all know the significance of a missing digit. I'm looking at 3 HP's in front of me: One made in China, one in the Philippines, and one in Malaysia. It is so frustrating to know i can't depend on any of them.....
Date published: 2021-09-21T00:00:00-04:00
Rated 5 out of 5 by from great product; reliable and works FOREVER I have been using this calculator for 20+ years. it works great . well built little machine
Date published: 2018-01-30T00:00:00-05:00
Rated 5 out of 5 by from Excellent product for all reasons I have using the 12C for 24 years and it has never failed to perform and expand it's utility value. But I do miss the scientific version with the same design, I believe it was the 15C, I wish it come back so I can replace the model I lost.
Date published: 2009-01-13T00:00:00-05:00
Rated 5 out of 5 by from Love the product, quality is just not there This is my favorite calculator of all time, but the third time I have had to purchase it because of quality issues.
Date published: 2017-07-05T00:00:00-04:00
Rated 5 out of 5 by from Real Estate Owner and Developer I was taught the HP-38E in CCIM school of the Realtors National Marketing Institute in maybe 1979-1981. When the HP12 came out I graduated to it. This instrument has made me more money than anything and I cannot praise it enough. This tool is a must in the financial world. Thank you HP!
Date published: 2009-09-17T00:00:00-04:00
Rated 5 out of 5 by from what happened to the best financial calculator?? Had my first one for 25 years never a problem, lost it, bought a new one and within a month it won't display, won't calculate, partial display, buttons often don't respond and it turns off. Not the batteries! How frustrating!!!!
Date published: 2015-11-24T00:00:00-05:00
Rated 5 out of 5 by from this one works Love the new 12c I just bought directly from HP. I had one bought for me at work last year and the keys were double entering numbers from day one. Hopefully this one will not have that problem. My first one bought in 1982 lasted 29 years! And I finally dropped it too hard, otherwise it would still be working.
Date published: 2012-09-26T00:00:00-04:00
Rated 5 out of 5 by from Buttons are not reliable. For 22 yrs. I have loved my HP 12C. I've owned two. They were quick, reliable, accurate and dependable. This past year I had to buy a new one. I saw many comments on the buttons and how they weren't as responsive as in the past. I would have thought HP would have addressed the issue by now. But they had not. The disappointment is that the buttons are not responsive as they were in the past. This hurts my productivity. I've had to slow to a crawl on entering data to make sure the digits are properly registering. Even then, it will still miss. Too many times as I hit the buttons to store data in the financial register or in memory, it turns out that data never registered, and therefore when I run my calculations, I get wrong answers or errors. I want to love my HP12C again. I would hope HP will address this issue and fix the buttons. We have to have confidence that when we hit a button it accurately and quickly records what we intended.
Date published: 2018-02-23T00:00:00-05:00
Rated 5 out of 5 by from What happened to what was a great product I bought my first 12c out of college in 1984 and it lasted until 2014. It was flawless for 30 years. Once It gave up I bought another one 2 years ago and it has been nothing but problems. Won't calculate, screen is bad sometimes only displaying the top half of the screen. What was once the industry standard is worthless now.
Date published: 2016-06-13T00:00:00-04:00
Rated 5 out of 5 by from Since MBA School The calculator itself is ok, but the leather case is much too snug.
Date published: 2011-09-26T00:00:00-04:00
Rated 5 out of 5 by from Old Reliable HP 12c I've been using the 12c; since the early 70's, when it was first introduced. I've been through two of them and am working on my third 12c. Unfortunately the unit only last a little over ten years. By the way, you don't have to worry; one one will ever borrow it work a calculation.
Date published: 2008-05-06T00:00:00-04:00
Rated 5 out of 5 by from The calculator that never dies HP seemed very ahead of it's time when they created this because it has been around for so long! I remember when I was little my Dad had a 12c and I hated using it to do simple elementary math because it confused me, now flash forward to18 years later and I bought one of my own for graduate school and he still has his! Very impressive for a product to be so helpful and last so long at the same time! I highly recommend it!
Date published: 2009-11-23T00:00:00-05:00
Rated 5 out of 5 by from Great product I have had this calculator for almost 20 years and it has never failed to give great performance. I love this product. The battery lasts forever and I use it all the time. I don't use all the features that it has available often, but when I do, it works just great.
Date published: 2008-04-02T00:00:00-04:00
Rated 5 out of 5 by from love my hp 12c I replaced my 1980+ hp. Some keys on my old 12c started sticking. It was time to retire it and treat myself to a new one. Would not want to be without it.
Date published: 2019-10-04T00:00:00-04:00
Rated 5 out of 5 by from So Far So Good! After reading the many stories, and listened to those people who had used the older HP12C before, I carefully made my purchase. I agree with many of the folks who said that this was not exactly like the older models...It is true that the case was too small and therefore, it got pitched...I barely got the old case to fit the new case but this is exactly what I felt was needed. The old model that was made in Brazil was a bit heavier and the keyboard felt like a "superior" calculator! The new one is a bit cheaper and its definitely not like the new one. I have had the old since 1985 and used it regularly until recently when it died...But despite all the negatives, the new HP12C is still great! I don't know how long it will work and maybe HP will go back to the old manufacturing. I will stick this out and if I have to recommend it, I definitely would. Good luck to all of us who know the old from the new and still would make the purchase! Believe in us and stop searching because this is still one of the best financial calculators! Just Go For It!
Date published: 2014-05-25T00:00:00-04:00
Rated 5 out of 5 by from Great product for the price This unit replaces a previous unit I had for over ten years when the display started to go. Could not be without the calculator and the programming capability with the financial functions.
Date published: 2018-01-02T00:00:00-05:00
Rated 5 out of 5 by from Cheap compared to old one Have owned a 12C since 1983. Dropped my old one, thought I woud replace and use old one for backup. New one feels cheap, keys don't work, case is useless. It's going back and I'm going to be very careful with my old 12C. Very disappointed.
Date published: 2013-01-25T00:00:00-05:00
Rated 5 out of 5 by from Very nice calculator. I wanted a good financial calculator that fits in my pocket nicely. This calculator fits perfectly, has all the functionality I need and is not heavy. It has a solid feel to it and is easy to use. My smartphone also does financial calculations but it is just not as nice as using my HP-12c.
Date published: 2011-10-31T00:00:00-04:00
Rated 5 out of 5 by from If you demand the best... This financial calculator and its scientific siblings are the gold standard of excellence and have been so for decades. There is no financial operation or computation or extrapolation or interpolation that is not possible with these handhelds. The only requirement is that users join the big leagues by learning RPN--something that should be mandatory in high school. If they aren't willing to take that step, then they should not purchase a serious financial calculator.
Date published: 2009-09-05T00:00:00-04:00
Rated 5 out of 5 by from Outstanding Absolutely the best product I have ever bought. Purchased in 1984, I've used my 12C non-stop since then. The features are awesome, the flexibility amazing, the programmability is wonderful, and the durability is beyond description. It has very low battery usage, thus very long battery life. Within my lifetime (I'm 51), I've never had a product which has even come close to the 12C in terms of exceeding every expectation I had. I cannot recommend it strongly enough. Even the original slip case is still intact, after spending (literally) years in my shirt pocket. It has withstood drops, freezing overnights in cars, coffee spills, and my children. The keys don't click as crisply as they used to, but I find that makes it even easier to use - now my hands just glide across the keypad. What a great device!
Date published: 2009-03-29T00:00:00-04:00
Rated 5 out of 5 by from Excellent Financial Calc This calculator is a must have for every day use and easy to use too once you accustom to it. The one thing that I really wish HP add a little more feature into this model is the Profit Pricing Calculations I hope the next anniversary will have this especially for the HP-12C Platinum. Profit Pricing is when you have Cost, Price, Markup and Margin This is a must have for a Financial Calculator.
Date published: 2019-06-22T00:00:00-04:00
Rated 5 out of 5 by from Prtoduct is unreliable I had this calculator for 25 years and never had a problem, lost it and bought a new one. It worked for one month and the keys stuck, it was useless. So I bought another one thinking I was unlucky. The second one worked for about a month then the display started to fade. it too became useless. Changed batteries, did everything I could to get it to work. I guess I have to buy another one to see if it works.
Date published: 2015-08-29T00:00:00-04:00
Rated 5 out of 5 by from Best calculator ever I bought one of these when they were new on the market and I was a poor business graduate teaching assistant. II used it untl recently when it was stolen. It's helped me do all my personal financial planning, helped my kids with homework, and performed all professional work necessary. I changed batteries only twice in the entire time. Having the positive touch is important and the clean design is timeless. I have used other calculators on occasion, but this is the best.
Date published: 2009-07-28T00:00:00-04:00
Rated 5 out of 5 by from The best and only calculator The HP12c is the best and only calculator I use in my architectural practice. I bought one in 1979, made in the USA, and have replaced its batteries only once. I painted all the gold plating and lines black to make the face of the calculator look simple, less nouveau riche regal. I always paint my name and telephone number in thick gobs of paint. The telephone number has changed though the calculator continues to perform well I own two more 12Cs, the original one I keep it at work, the second one in my home office, and third is the spare for the briefcase if I have to go on the field. I have given many away as Christmas presents. Architects are not numerically inclined, but I have impressed more than one client for the simplicity in performing complex budgetary projections. I paid $120 for the first one. Perhaps, $79.99 for the third one, though the price is trivial when I think of the billable hours it has brought into my practice. My wife hates it because it does not work like a regular calculator, which is a virtue, since I know she will not borrow it under any circumstance. Any improvements? I would love to design a simple face for it, but would not change a function. Maybe introduce a few energy and insulation functions.
Date published: 2010-04-30T00:00:00-04:00
Rated 5 out of 5 by from Best handle held calculator I have used this calculator for 35 yrs. It is the only calculator I use for all my business. .
Date published: 2018-12-06T00:00:00-05:00
Rated 5 out of 5 by from LCD failed in 18 months; warranty is expired Warranty status Warranty has expired LCD display (fifth digit from the left) is missing bars so the zero looks like a 7. This makes the calculator unusable.
Date published: 2015-06-19T00:00:00-04:00
Rated 5 out of 5 by from Not what it used to be I have been using this calculator since 1988 - the first one last forever and the second one for a good while. The last two have been sub par. My current one is less than 2 years old and the keys stick or do not register leading to math errors daily. Very disappointed and sad about it. I guess you get what you pay for and since the price has dropped dramatically so has the quality.
Date published: 2021-10-15T00:00:00-04:00
Rated 5 out of 5 by from This is the very best electronic device I have eve I have owned my HP 12c for over 40 years - and it has been in daily use for the last twenty. Last week, it finally gave up the ghost. I have been bragging and bragging for years about what a great product this is, and alas my old friend is now gone. Never fear though, my brand sparkling Platinum edition has arrived. Amazing engineering!
Date published: 2021-03-24T00:00:00-04:00
Rated 5 out of 5 by from RPN is back I lost my HP-11 a few years ago in Hurricane Harvey. I tried using an app on my phone for a HP-15 but just wasn’t happy with the tactile feel of the keys. The HP-12 doesn’t do all the things I need as an engineer, but for many of my Project Management tasks the HP-12 works great. I’m glad I made the purchase. When is HP going to bring back a replacement for the HP-15? I’d buy it in a heartbeat.
Date published: 2021-04-16T00:00:00-04:00
Rated 5 out of 5 by from The "Energizer" of Calculators This thing just keeps working! I bought mine in 1984 or 1985, I reconcile my checkbook, calculate all the refinances, etc. and I have yet to replace the battery! This thing just works and works and works. The other great thing is that the shape fits very well in your hand and it is very easy to hold the calculator and press the keys with your fingers. I have never had a case where I pressed a key and did not have it register as I have on some calculators with weak key pads. I also like the slip on case. I have copied some of the pages from the manual for operations I need to perform, like calculate mortgage payment, fold them up and just stick them in the case with the calculator where they are always handy. Great product HP!
Date published: 2010-11-26T00:00:00-05:00
Rated 5 out of 5 by from Great Product. Much better than what has been out The quality seems to be improving. Had a few in the past 10 years that lasted only a month or so. This seems to be of better quality.
Date published: 2017-11-16T00:00:00-05:00
Rated 5 out of 5 by from 25 Years And Still Going! I bought my HP 12C in 1985 when I started in real estate. It has been my financial calculator for 25 years and has never failed. I think I've only had to replace the batteries twice in all that time. It easily handles all real estate, banking, mortgage lending, investing and any other financial calculations you can think of. If you're so inclined you can program it for particular problems that you do repeatedly. This is such a great calculator that I'm thinking of buying another one, just in case my 25-year-old stops working. (It's shown no such signs, but I wouldn't want to be without it.) If you're thinking about buying a financial calculator, look no further. You won't be disappointed with this one.
Date published: 2010-11-08T00:00:00-05:00
Rated 5 out of 5 by from Am I still alive I bought mine back in the horse and buggy era. Too bad HP only rates products up to 5 stars. I would rate this 10s. A true icon of handheld financial calculation for school, job, or whatever.
Date published: 2009-08-20T00:00:00-04:00
Rated 5 out of 5 by from So far so great! Just got this calculator but It works fantastic. Love the HP 12C!
Date published: 2019-07-04T00:00:00-04:00
Rated 5 out of 5 by from I have used HP financial calculators a long time I have used HP financial calculators since they were introduced, great product!!!
Date published: 2017-05-07T00:00:00-04:00
Rated 5 out of 5 by from Always a great product! This is my third HP calculator since the early 80's. Always dependable and accurate, as well as comfortable to use. Thanks HP for such a great product!
Date published: 2021-05-21T00:00:00-04:00
Rated 5 out of 5 by from The absolute best product (of any kind) I've ever I bought my first HP 12C when they first came out. I have taught RPN and stack archiecture to many, many people. It's the way to go. RPN makes calculations very easy. The battery life is fantastic - Mine once went 5 years and 2 months before needing replacement. (I actually kept the dates of replacement in the case).
Date published: 2009-10-16T00:00:00-04:00
Rated 5 out of 5 by from Superb Quality Years ago, 1984 I purchased my "1st" HP 12C. Today, 2010 it CONTINUES to work FLAWLESSLY. In comparison, I do not believe ANYONE can make a better calc. You cannot go wrong with a 12C by HP.
Date published: 2010-12-18T00:00:00-05:00
Rated 5 out of 5 by from Died after a couple hours use Similar to other reviewers, my new 12C lasted only a very short time before any key on one whole side of the keyboard would either cause an error or simply turn the calculator off. My old 11C has been going strong since I bought it in college 35 years ago (made in USA), and I use it every work day. Made in China 12C made it a few hours - nearly DOA. Tried new batteries and re-setting to no avail.
Date published: 2018-01-22T00:00:00-05:00
Rated 5 out of 5 by from Best Calculator I have been using the 12C in my career and personal use since it was brought out in the 1980's and there is no better financial calculator out there. I have tried so many to check them out, but they all fail in ease of use, accuracy, and available functions.
Date published: 2019-07-22T00:00:00-04:00
Rated 5 out of 5 by from Flawed keyboard Sticky keys! To Temporarily fix it Reset the device by powering on while holding the minus sign. Make sure to hold the minus key for at least 10 seconds after releasing the ON button or else the sticky key syndrome returns. I wish I realized the sticky key problem sooner so I could have returned it during the one year warranty period. I also that wish they still made the scientific version that let's you delete one digit at a time instead of clearing x entirely. My 30+ year old 10c and 11c scientific calculators are FAR SUPERIOR made in USA products. They operate perfectly still to this very day. The new 12c financial calculator is completely unreliable because of the sticky key problem. For example, enter 1 2 3 then look at the screen it will indicate 112233.. BEWARE!!!
Date published: 2014-01-17T00:00:00-05:00
Rated 5 out of 5 by from Timeless and Perfect I am 68 years old. I bought my first 12C in 1979. It still works perfectly. Batteries last seemingly forever. I have since purchased two more solely because if HP ever stops making them I want to be sure to have one available for life. It is that good. Nothing else I've tried is even close. This design should win an award for the longest continuous production run of a personal electronic device in history. I believe it's 30 years and counting in a world where months is a long time before obsolescence sets in.
Date published: 2009-10-08T00:00:00-04:00
Rated 5 out of 5 by from The Best I have been using my five HP 12C's since I first bought one in business school in 1977. It's still going strong and requires only the occasional change of batteries and it just keeps on keepin' on... Great functionality, great performance, and great reliability. An ICON in my life from HP. I keep one handy at all my locations: at home by my computer, at work on my desktop, in my travel briefcase, at my offices in China and Japan... Truly a "must have" piece of equipment for business people. A great piece of engineering by the genius work force at Hewlett Packard... Thank you HP !
Date published: 2009-12-07T00:00:00-05:00
Rated 5 out of 5 by from shocked at poor quality I am a HP fan, with HP laptop and desktops, and have used an HP 12C for more than two decades. I lost my original HP12C less than a year ago and had to replace it with another HP 12C, but the new one's screen goes blank unexpectedly when imputing numbers and prints error messages when there was no error and does this so often now that it must be replaced in less than a years ownership. Unclear why HP lowered the build quality on the product that made me an HP repeat customer. I would gladly pay more for better quality.
Date published: 2014-09-18T00:00:00-04:00
Rated 5 out of 5 by from Best calculator I have just gotten a HP 12C calculator and am completely satisfied. The reverse Polish notation is excellent for anyone who is serious about numbers. I have been happy with my prior HP calculators including the models 35,45,55, 67, 32SII,and 11C. To my mind, these calculators have been overwhelmingly important to my work and investing, second only to the development of the microcomputer.
Date published: 2011-10-10T00:00:00-04:00
Rated 5 out of 5 by from Calculator=Great, Case=Not Latest generation of calculator seems to process faster than my 7 year old predecessor (which I lost). IRR functions are quicker. Good thing the calculator is really works well, because the case is in a different class. I hate the case. It’s cheap, thin, vinyl material. It doesn’t hold its shape where I can easily reinsert the calculator without having to squeeze it in. The case was stuck to the package when I opened it. Peeling it off the package left material on the case, which will not come off. Now I have line running the length of the case. My old case was much better quality. Geez HP, I’m willing to pay top dollar for the unit. It would be nice to have a case that was of equal quality to the calculator.
Date published: 2012-07-25T00:00:00-04:00

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