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 5 out of 5 by Great HP35s I was happy to see the HP 35s introduced since I started using HP calculators and programmable calculators years ago. My first was HP 55 then HP 67 etc. I like the HP 35s for it's "simplicity" when I don't need graphing (which is more and more frequent now). The calculator does all I need, in the trusted RPN, and then much more. Simple programs are a charm. Thanks HP. April 15, 2008
Rated 4 out of 5 by Waiting for the new 41CV The 35s is a very practical and robust calculator for the professional. It handles arithmetic, statistics and moderately complex programming tasks very easily. The HP 35s has both RPN and standard algebra entry operation. In either mode, RPN or standard, this unit is highly refined. Users will find it to be very functional and powerful. It handles easy math to the more complex mathematics with ease. It incorporates features and functions that are easy to use and understand, yet has the power to complete some rather complex mathematics. The professional will find it to be very practical. The student will find it to be both rugged and powerful. It does not have graphing capabilities. It does, however, meet the needs and requirements for a robust, economical and practical solution for which calculators are intended. April 13, 2008
Rated 4 out of 5 by 35S ?????? I proudly own several hp calculators from 33E, 32S II, 41xx, 48g+,49g, and 50g. When the 35S came out as an update to 32S II with its portability and boasting of Complex Number operation I search many store to avail myself of this little wonder of a calculator, only to discover that the 35S cannot find the square root of a negative number. It displays SQRT(NEG) instead of (0 i 5.9161) for sqrt(-35). If I'm in error please forgive me and let me know. Apart from the above comment it's a great calculator, terrific display. The key press is smooth and effortless unlike the 49g lets say, but more like the 41 series. April 7, 2008
Rated 5 out of 5 by good for surveyors this is a relly good instrument you have to check that out. April 3, 2008

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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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