12C Financial Calculator, 10-Digit LCD

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.

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.

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.

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!

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!

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!

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.

The calculator itself is ok, but the leather case is much too snug.

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.

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.

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.

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).

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!

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.

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.

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.

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.

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.

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.

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!