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HP 35s

HP 35s
alaAverage 4.1

26 reviews

May, 2018

alaTest has collected and analyzed 26 reviews of HP 35s. The average rating for this product is 4.1/5, compared to an average rating of 4.2/5 for other Calculators for all reviews. People really like the durability and design. The price and usability also get good comments.

usability, price, design, durability

On average, users rate this product 82/100.

Review analysis

(Based on 26 reviews)

1 expert reviews

User Reviews  

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HP 35s Scientific Software Calculator


The HP 35s Scientific Software Calculator offers flexibility and control that no other digital calculator can provide. The HP 35s Scientific Calculator has been used for years by mathematicians, engineers, and students to calculate the most challenging...

The software includes comprehensive help documentation that teaches the user how to use every function of the calculator., The layout of the software is identical to that of the real-life HP 35s calculator, which makes it an easy transition for...

This calculator should not be used for simple calculations, as it may appear cluttered to the average user

Dec, 2010

Consumer review (

Hewlett-Packard 35S


Someone mentioned the 15C. The 15C is still available, at the HP website, in a nice limited edition. I bought one. :) sweet.

Simple, big keys, nice shape like my old 41CX, naturally RPN

Display is weak, keys not as firm as my 41CX, or 15C. This calc is OK for the backpack, rough handling, commuting computing

May, 2012

Consumer review (

Not great but good support


On the merits of the calculator alone, I would give it 3 stars, but because I received prompt customer service from HP I give it 4. After 10 months of owning this calculator, the numbers 1&2 would work only intermittently. To be honest, I didn't expect...

Key layout good

Hexadecimal operation very cumbersome. My HP-33S was much more intuitive

Jan, 2012

Consumer review (

Almost like the old days


I'll get used to it. There is no alternative for a familiar RPN calculator for everyday use. If it lasts I'm satisfied. Like millions of others I can't figure why someone doesn't make a 41 CX with a modern case, cpu and external connections. NE sat on...

Keys feel good and the arrangement is ok for an old user of the 41 and 42 series. Batteries are 2 x 3v CR 2032 "coins". The functions are familiar too, with the addition of some conversions on the keys

Feels strange in the hand because it's both very light and very large in comparison to the 40 series models. No input or output method. Huge battery cover for 2 coin cells

Sep, 2011

Consumer review (



This was a replacement for my previous HP35s...used it too much and wore out the keys

The calculator is a great RPN with the option for algebraic function if you really want to go to the dark side ; Great RPN calculator for the money

Slight limitation on the speed at which you can punch in keys i.e. skips functions and numbers sometimes. Just need to slow down a bit

Feb, 2011

Consumer review (

HP 35S 8502 Processor Scientific Calculator


Fantastically powerful little calculator ; Legal to use for the FE exam

RPN has a slight learning curve

Jan, 2011

Consumer review (



I initially bought this so I would be comfortable when I took the LSIT exam (no graphing calculators allowed). I still carry a basic Casio with me but am making the HP my go to.

For surveyors this calculator is the bees knees. Easy to program for traversing, trig is easy. Most LS I know carry 2 in the truck as they are very valuable. RPN is a little tricky at first, but it can be switched to algebraic notation if you don't...

RPN can be confusing, read the section of the manual that informs you of how it works and everything should be made clear

Jan, 2011

Consumer review (

Nice Calculator


Compared to the 32SII - the viewing angle and contrast on the display is better. The reflectivity of the display reduces this advantage if you use flat on the desk. Hand held, it is a better display. Keyboard feel is ok, but not what you once got. It's...

It's RPN (could repeat that about 100 times) ; High contrast multi-function labels on keys ; Lots of usefull built in functions (it's an HP) ; Two line display ; Keyboard more spread out than the 32SII, more like a HP-35 ; Great feature set for the price

Bigger than the 32SII (thicker, longer) ; Two line display characters smaller than the 32SII ; Doesn't have a card reader for my HP-65 cards ; Reflective display

Dec, 2010

Consumer review (

Great product


I love this calculator. Got it after a engineer suggested it due to being able to use it on the FE exam. Took some time to get used to the placement of buttons because I had used a TI prior, but I finally got used to it.

Great calculator. Powerful. RPN is really easy to use once you get used to it

RPN can be difficult at first. Certain buttons such as pi or x^2 can be difficult to remember where they are

Oct, 2010

Consumer review (

Decent - But Flawed


I bought this to use on the FE Engineering Exam - was a mistake. In Decimal point mathematics, some of the answer is off the screen, forcing you to limit the percision, which in this calculator leaves trailing Zero's. Just try to do simple division...

Better feeling Keypad to the Competition, Two Line Display, Good contrast of colors with Black Backgrount, Accepted on the FE and PE exams

No matricies, programs for matricies are S-L-O-W. Calculator often displays more than the screen can handle - bad and very annoying flaw

Aug, 2010