HP 35s calculator
Shares rank 20 of 21 calculators by recommenders
People recommend it for quick everyday calculations thanks to its well-designed interface and instant power-on. Critics say keys can start missing presses after a couple of years.
People recommend it for quick everyday calculations thanks to its well-designed interface and instant power-on. Critics say keys can start missing presses after a couple of years.
6 people gave an opinion
- recommend it
- 5
- criticize it
- 1
- approval share
- 83%
Recommended in 1 of 13 months
- November 2025: recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 5 people recommend itNeeds 10 or more, not met.
- 5 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 1 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Well-designed interface, instant power-on
“It's just faster for quick calculations as the UI is very well done and it turns on instantly.”
Comment from 11 Nov 2025 in “The R47: A new physical RPN calculator” Easy for everyday calculations
“the most easy way to calculate things with current and power for everyday use”
Comment from 11 Nov 2025 in “The R47: A new physical RPN calculator” Used daily by longtime RPN users
“I use an HP-16 (the SwissMicros version, my originals are in boxes) and a 35s pretty much every day”
Comment from 11 Nov 2025 in “The R47: A new physical RPN calculator”
What people warn about
Each mark is one comment
Ergonomics not as good as older model
“found the ergonomics not as good as my old, dead 11C”
Comment from 11 Nov 2025 in “The R47: A new physical RPN calculator” Keys miss presses after a few years
“After just a couple of years of use, mine started missing presses on frequently used keys.”
Comment from 3 Jun 2026 in “HP re-releases classic computer science calculator: The HP-16C”
Other calculators people recommend
The four most recommended other calculators, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Texas Instruments TI-84 Evo | 41 | 53 | 44% | 4 | 10 yrs7 owners | — |
| TI-89 calculator | 31 | 8 | 79% | 8 | 28 yrs4 owners | Approved |
| HP 15C | 24 | 6 | 80% | 5 | 41 yrs5 owners | Approved |
| TI-83 Plus | 21 | 8 | 72% | 6 | 30 yrs3 owners | Approved |
| HP 35s calculatorThis page | 5 | 1 | 83% | 1 | — | — |
What people said
5 of the 6 comments that mention it, newest first. Each links to the original comment.
“After just a couple of years of use, mine started missing presses on frequently used keys.”
“found the ergonomics not as good as my old, dead 11C”
“I use an HP-16 (the SwissMicros version, my originals are in boxes) and a 35s pretty much every day”
“It's just faster for quick calculations as the UI is very well done and it turns on instantly.”
“the most easy way to calculate things with current and power for everyday use”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.