HP 35s Scientific Calculator


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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.

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Internal specs

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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

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  • 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

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  • Calculator, batteries, user manual, premium protective case

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Customer ratings and reviews for HP 35s Scientific Calculator

Rated 2 out of 5 by statistics and linear regression are wrong The statistics and linear regression calculation results are wrong. I use this calculator to perform the calculation according to hp 35s quick start guide part number f2215 90201, the result is identical to that print on pages 25 to 28, but is wrong. So the calculator has problem in its program. I would encourage you to verify it yourself. November 15, 2011
Rated 4 out of 5 by Good Buy I like this calculator. It replaces a 33s and is very similar in usage. I wish that the 35s automatically seperated input numbers with commas to indicate 1000s as the 33s did. Otherwise, I am completely satisfied with the operation of this calculator. October 28, 2011
Rated 5 out of 5 by Review Works very good. Takes some time to get use to moving from rpn. Challenge is that calculator is not available in any stores in the community that I live. HP should consider bringing back older versions like HP25 and HP41. These are very good products for scientific community October 22, 2011
Rated 4 out of 5 by HP 35S excellent for EE tasks Like most reviews below, I too believe this is an excellent calculator. Especially for complex number calculations. For EE students this calculator is the best ever produced for taking tests where graphing calculators are not allowed. I congratulate HP on it's attention to Complex number operations and allowing free entry of mixed Rectangular or Polar forms. Thank you! There is without a doubt one huge disappointment with this device. The "Display" is hard to read. Not compared to older calculators - Just compared to what could have been used in these modern days of screen technology. Many have pointed this out. The display needs to have a higher resolution in order to allow the programmers the ability to display items clearer. Theta and '8', 'Show all' especially for Complex numbers, the need for scrolling, the annunciators at the top are ALL hard to see because the angle of viewing is so limited and the display is so limited. I would gladly pay 2X the price for a slightly larger, higher resolution lcd screen with 4 lines display of display. I'm not looking to have a huge graphics calculator type display.... just a little better resolution and a 4 line display with better contrast and angle of view. I would love to see even more attention given to Complex number operations. :) Thanks HP for the HP35S! October 19, 2011
Rated 5 out of 5 by Great calculator I have enjoyed this calculator, the features are really useful, does a lot of work for a small price. A great buy for anyone whe needs a scientific calculator. October 13, 2011
Rated 2 out of 5 by Good RPN...bad enter key Given the choices for engineers, The HP35s is a good RPN calculator. I pound on the keys everyday doing simple calculations. Keys do not have the same feel and technology as the old HP's had. My enter key just went bad - floppy and sloppy. No good, especially since HP only has a 1 year warranty. I guess we just buy a new calculator every couple years. HP needs to manufacture keys that last. October 13, 2011

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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

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