HP 12C value (October 2026)
Calculator · 1981
Typical sale price (used)
$13–$24
Middle of the market ≈ $17.59 · 1,428 for sale on eBay
List at
$19.99
The going asking price, with room for offers.
Quick sale
$12.99
Priced to sell within days.
Based on current eBay asking prices (100 matching listings, Oct 6, 2026), discounted to estimate sold prices; updated weekly. Parts-only, untested and accessory listings are left out.
Price history
We record the market every week. The chart appears once there are two weeks of data (first point: Oct 5, 2026).
Listed on eBay now

$7.50
Vintage Hewlett Packard HP-12C Financial Calculator With Case No Battery
(opens eBay in a new tab)
$14.94
Hewlett Packard HP 12C Financial Calculator w/ Original HP Case Tested Working
(opens eBay in a new tab)
$19.79
Hewlett Packard HP 12C Financial Calculator (No Case)
(opens eBay in a new tab)
$23.99
HP 12C Financial Pocket Calculator w/ Case, LCD Display, Battery Powered
(opens eBay in a new tab)
$29.00
Hewlett-Packard HP 12C Financial Handheld Calculator LCD Battery w/ Case
(opens eBay in a new tab)
$49.99
Vtg. Hewlett Packard HP-12C Programmable Financial Calculator Inserts &Box Works
(opens eBay in a new tab)
Asking prices at the last refresh, cheapest to dearest. Some may have sold since.
About the HP 12C
The HP 12C financial calculator, introduced in 1981 and in continuous production since, uses RPN entry and is one of only four calculators permitted in CFA exams. Check the display for missing segments, the keys for reliable presses, and the battery compartment.
What affects the price
- Screen: no dead rows or faded segments.
- The slide cover, charging/USB cable and battery (rechargeable models).
- Engravings from schools and exam-mode lights are common and lower the price a little.
Price your own
Check yours liveWhat’s It Worth? with your exact condition and extras.See sold prices on eBayThe free extension adds sold stats to eBay search.Check your own listingsPrice Check compares every listing in your store to the market.FAQ
How much is a HP 12C worth?+
As of October 2026, a used HP 12C typically sells for about $13–$24, based on 100 current eBay listings. Asking prices are discounted about 12% to estimate what it actually sells for.
What should I list a HP 12C for?+
List at around $19.99 to sit mid-pack with room for offers, or around $12.99 to sell it quickly. Condition, what’s included and good photos move it up or down.
Are these sold prices?+
No. eBay only shares sold prices with approved partners, so this guide uses current asking prices on eBay (items for sale right now), drops accessories, parts-only and outlier listings, and discounts the middle of the range to estimate the sale price. It is updated weekly.
How do I check the value of my own HP 12C?+
Use What’s It Worth? to search live eBay listings with your exact description and condition, or the FlipperTools extension to see sold prices on eBay’s own search pages.
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