HP 35S Scientific Calculator

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HP 35S Scientific Calculator

About this item

The HP35 Scientific Calculator is ideal for both professionals and college students. That's because it offers the flexibility of choosing RPN or algebraic entry-system logic, to suit the needs of engineers, surveyors, scientists and medical professionals. This HP graphing calculator is completely programmable and can handle the heaviest workloads with ease thanks to 30 KB of memory plus 800 independent storage registers. With this HP graphing calculator, you can store an equation, then use it to solve any variable using HP Solve or the 100 built-in functions. And this HP scientific calculator is permitted to be used in tests, including the SAT.

HP35 Scientific Calculator Key Features:

  • This HP graphing calculator has raised edges to protect the keys
  • HP scientific calculator has large 2-line display with adjustable contrast to easily view entries, results, menus and prompts
  • Get accurate results with edit, undo and delete capability
  • Simplify physics with 42 built-in physical constants, plus a complete library of unit conversions
  • Use strong statistics functions for single and two-variable statistics, linear regression and more
  • Use base-n functions for binary, octal, decimal and hexadecimal number calculation and conversion
  • Single and two-variable statistics, linear regression and more
  • Complete library of unit conversions, inverse functions, cube root, logarithms, exponents, factorials and more
  • Perform operations on complex numbers, calculate logarithms, exponentials, inverse functions and more
  • Take advantage of a powerful fraction mode plus fraction-to-decimal conversion
  • Pending operations 13-level parenthesis or maximum number of pending operation: 13 at ALG
  • 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


Model No.: HP 35S
Shipping Weight (in pounds): 1.62
Product in Inches (L x W x H): 6.22 x 3.23 x 0.72
Assembled in Country of Origin: USA or Imported
Origin of Components: USA or Imported

Customer reviews

Customer Reviews | 183 reviews | 4.2 out of 5

4.0 stars

183 reviews | 4.2 out of 5

5 stars
4 stars
3 stars
2 stars
1 stars
Would recommend to a friend



EXCELLENT - A tribute to a CLASSIC

Customer review by cos6

5.0 stars by cos6

I'm a veteran HP user, having used HP calculators since 1980. These are the 'Rolls-Royce' of calculators, and the new HP-35s is no exception. HP lost it's way with calculators in recent times, but this is a welcome return to a great tradition. I'm considering buying a couple more, to keep if HP stops making RPN calculators. This one is a GEM.

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San Diego
Would recommend to a friend? Yes
Ownership:2 - 7 weeks
Age:35 - 44
Usage:Every day
A step back toward the great calculators

Customer review by HPOldTimer

5.0 stars by HPOldTimer

The 35s has the nice feel, key colors and layout of the first HP calculators of the '70s. Programming capabities are basic - pre-HP41 - with limited variable naming and few alpha characters. It comes with a really nice hard case and don't forget to contact HP for the free, hard-copy user's manual. At $40-50, it's about 15% of what I paid for an original HP 35 in my freshman year of college. People lined up outside my dorm room to give it a try. Let's hope HP continues the comeback. A 42s body with SD/USB capabilies, BASIC programming interfaced with a PC platform and color display would be awesome.

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Denver, CO
Would recommend to a friend? Yes
Ownership:2 - 7 weeks
Age:55 - 64
Usage:Every day
Excellent calculator for technical use.

Customer review by Card1

5.0 stars by Card1

Purchased this calculator to replace the HP33 which I was using for the past 3 years. I really like the HP33 but I found over time that it had key jamming issues. The HP35S is a well designed, well layed out, hand calculator for all engineering functions.

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Louisville Ky.
Would recommend to a friend? Yes
Ownership:2 - 7 weeks
Age:45 - 54
Usage:Every day
1-3 of 161 total reviews See all

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excuse me for my ignorance but am purchasing for my son. this item will calculate fractions, right?
by rickets 10/7/2008
  • Yes, it handles fractions but is far more powerful. It you only need to handle fractions, I suggest buying a much cheaper calculator.
    by RickInPhoenixEngineer2/23/2013
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  • Yes by putting decimals between the whole number and the numerator and denominator.
    by Jack01234567892/2/2013
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  • Yes, to enter a number, you use the decimal key where you normally would, then again after the numerator, so it displays the line (don't remember the term), then you enter the denominator. Pretty cool, and maybe the way other calculators work. The answer is then displayed as a decimal until you press a key FDISP for fraction display. Then the display stays in fractions until you change it back. The nice thing about the 35S is that it can use RPN (reverse Polish notation) or algebraic enty. RPN for me!
    by truthasweknowit12/30/2012
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  • Yes, it does fractions. See page 5-1 in the on-line manual. http://h10010.www1.hp.com/wwpc/pscmisc/vac/us/product_pdfs/user_guide.pdf
    by An anonymous customer11/15/2012
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  • Yes it will.
    by An anonymous customer9/26/2012
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  • The manual has step-by-step instructions for calculating with fractions.
    by Terryer7/22/2011
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  • Yes, of course. Like for 1/4, you could punch: 1, enter, 4, divide
    by spud102/11/2011
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  • yes. you can choose how you want to display fractions. in HP world, a fraction of 2-3/4 is entered as 2.3.4, the calculator knows how to interpret it. i know the time has passed, but if your kid can run this, he'll have a leg up on his friends with a Ti.
    by DownWitEvilEmpire10/30/2010
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  • Yes, it will... plus you can enter the numbers as fractions or in decimal format, See photo.
    by Ebonywood7/22/2010
    Was this answer helpful? (0) (0)
  • I has a fraction mode. 4 - 1 / 2 = 4.5 is entered as: 4.1.2 you also need to toggle the fractional display back and forth with blue shift . key
    by PEngineer6/25/2010
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does it solve problems for exaample: 6x-5y+10 and solve for x or y? does it solve equations and variables and easy to use
by kadams9 2/14/2010
  • Yes, it can solve this kind of equation. "Easy to use"? It depends on your skill level.
    by RickInPhoenixEngineer2/23/2013
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  • Yes. This calculator works best when using RPN notation which is easy to learn.
    by Jack01234567892/2/2013
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  • Looks like it does, but I have never used it. Check chapter 7 of the manual, http://h10010.www1.hp.com/wwpc/pscmisc/vac/us/product_pdfs/user_guide.pdf
    by truthasweknowit12/30/2012
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  • Yes it will. look at the on-line manual page 7-1 http://h10010.www1.hp.com/wwpc/pscmisc/vac/us/product_pdfs/user_guide.pdf This little beast will even do integration, page 8-1
    by An anonymous customer11/15/2012
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  • Yes it will.
    by An anonymous customer9/26/2012
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  • yes, it can solve simultaneous equations (you need two equations with two variables). easy to use is a relative statement. with the decline in overall intelligence and education in this country, you'll be challenged at first. but as you use it, you'll be come smarter as it forces you to think... which is a good thing.
    by DownWitEvilEmpire10/30/2010
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  • With one equation and two unknowns, there is no single solution to x and y. The calculator only returns multiple solutions as a message, but no actual solution. It needs two equations with two unknowns to get a solution for x and y.
    by Geek511010/26/2010
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  • HP 35S Scientific Calculator will allow you to perform algebra. Most people feel the layout is easy to understand.
    by HP Team5/29/2013
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