HP 35s Scientific Calculator


No Payments + No Interest if paid in full in 6 months with Bill Me Later. See Terms

Special deals, offers & upgrades

UPC: 883585142859   Part: F2215AA#ABA


  • Get professional performance from HP’s ultimate RPN scientific programmable calculator—ideal for engineers, surveyors, college students, scientists and medical professionals. Scientific projects require accuracy, functionality and dependability for success. The HP 35s scientific programmable calculator delivers them—and more—with features that include 30KB user memory, your choice of RPN and algebraic entry-system logic, a convenient two-line display, and the time-saving HP Solve application.



  • RPN or algebraic entry-system logic, keystroke programming, HP Solve and 100 built-in functions, Large 2-line display with adjustable contrast, Single and two-variable statistics, linear regression and more, 30 KB of memory plus 800+ independent storage registers, Fraction mode plus fraction-to-decimal conversion, 42 built-in physical constants, plus a complete library of unit conversions, inverse functions, cube root, logarithms, exponents, factorials and more

Ideal for

  • Ideal for engineers, surveyors, college students, scientists and medical professionals.

Permitted for use on

  • Permitted for use on SAT Reasoning Test, SAT Subject Tests in Mathematics Level 1 and Level 2, ACT Mathematics Test, PSAT/NMSQT, AP Chemistry/Physics, PLAN, and EXPLORE.

Back to top


Internal specs

Back to the top


Best used for

  • Engineering; Surveying; Science; Medicine

Permission usage

  • SAT Reasoning Test; SAT Subject Tests in Mathematics Level 1 and Level 2; ACT; PSAT/NMSQT; AP Chemistry/Physics; PLAN; EXPLORE

Built-in functions

  • Over 100

Memory registers

  • 800

Memory, standard

  • 30 KB


  • 2 x CR2032 batteries; battery life: 0.73 year @ 1 hr/day (approximately 9 months)

Power off memory protection

  • Yes

Auto power off

  • 10 minutes

External specs

Back to the top


  • Adjustable contrast with 2 lines x 14 characters + indicators, 14 character dot matrix (5 x 7)

Display type

  • LCD

Dimensions (W x D x H)

  • 8.2 x 1.82 x 15.8 cm

  • 3.23 x 0.72 x 6.22 in


  • 125 g

  • 1 year warranty (may vary by region)

What's in the box

Back to the top
  • Calculator, batteries, user manual, premium protective case

Back to top

Customer ratings and reviews for HP 35s Scientific Calculator

Rated 5 out of 5 by Just got it and love it. I bought this as the same time as the re-issued 15C. I gotta' say, this could become my new favorite. I love the retro look, it feels good, nice size and love the bigger keys. I just might have to get a couple more... April 10, 2012
Rated 2 out of 5 by performance The product seem nicer and better look compared to 33S. I have my old 33S and need new one for the NCEES exam. The operational functions are reverse to 33S, e.g. 1/x function need to be pressed 1st and then you need to press digit. Especially if you are taking exam w/ time management, you cannot perform functions continuously. You have to memorize your digits and then another operation. I like 33S as it was convenient. If HP use 33S operational way, I mean digits first and then operation, and other features from 35S, that will be so great. March 30, 2012
Rated 5 out of 5 by A nice complement to the 50G For just simple plugging in of the numbers and or a not too complicated equation this is the calculator to use, when you are not allow to use your 50G for a math test. February 11, 2012
Rated 2 out of 5 by Would be perfect except for Keyboard Hi, I am a RPN calculator user for 10 years and just can't convince myself to return to conventional algebraic calculators. When I saw the HP 35s, I was convince by its classic design and because it was not a graphic calculator. I just love this calculator and I haven't nothing to say about its functionnalities, it just perfect for me. I'm a mechanical engineer and use it each day. However I had it for two years now and my Enter key is broken (it stands loose in its cavity and it doesn't punch each time I try, see pictures). Previously I had an HP 48gII that did the same thing, it begin by the Enter key followed by the number keys and after a time it is not praticle to work with. With this 48gII this defect appeared just after the end of the warranty, I wrote to HP and they changed it anyway (Excellent work). The 48gII that they sent me broke within a year (see pictures, less good design). And now my HP35s begin to have the same problem. Don't mislead me I am not hard on material. I'm a consulting engineer and my calculators always stays on my desk and don't follow me on the field. Also read, and you'll find other critics talking about those key problems. So I would not recommend this product it will just get you addict to the RPN, but the quality is not there anymore. Hope they will correct this problem a day and come back to the quality that was associated with there calculators. January 23, 2012
Rated 1 out of 5 by What a disappointment I have been an HP RPN calculator user for over 30 years, and had purchased a 35s about 15 years ago. One button was sticking so I ordered a new one. The build quality of the new 35s is extremely poor, and the display wouldn't work. I sent it back and asked for a refund. I am very disappointed. HP has lost a customer. January 11, 2012
Rated 5 out of 5 by Statistics is OK I have read review which told the statistics function computes wrongly. But its author is wrong! When you go to the p. 12-2 of user guide, you find, that input order of ordinates is Y, X. With this in mind, the results are OK. It's a little strange order, but what to do. December 5, 2011
  • 2015-04-20T09:05:23.638-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-4, bvpage2n
  • co-hasreviews, tv_103, tr_103
  • loc_en_US, sid_F2215AA_BVEP_ABA, prod, sort_default

Back to top

Owner support

Warranty information

This product is covered by the standard HP warranty

Support information

Support for this product is provided by HP Customer Care

Returns & exchange information

The HP Home & Home Office Store will accept returns or exchanges for this product up to 21 days after delivery

Back to top

Customers who bought also bought