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HP 35S Scientific Calculator

HP 35S Scientific Calculator

This model 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. It's completely programmable and can handle the heaviest workloads with ease thanks to 30 KB of memory plus 800 independent storage registers. You can store an equation, then use it to solve any variable using HP Solve or the 100 built-in functions.

Average Customer Rating: 4.526 out of 5 4.5 out of 5 (38 Reviews)
36 of 38 (95%) customers would recommend this product to a friend.

Customer Questions & Answers: 1 Question |  1 Answer

Customer Reviews

09/20/2009
By harleysgirl
Overall Rating: 4 out of 5 4 out of 5

Bought this calculator for my granddaughter for her high school science class. It will also be good for her at the college level. Not too complicated for her to use at this level
Product Attributes:
Value: 4 out of 5 4 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
Has owned product for: 2 - 7 weeks
Uses product: Every day
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Review 2 for HP 35S Scientific Calculator

Awesome!, 07/10/2009
By PastorSteve, Kingsport, TN
Overall Rating: 5 out of 5 5 out of 5

I've been an HP fan for years starting with the HP41CV. Though I own an HP50G, I wanted something to throw in my briefcase. The HP35S is awesome. Love the keyboard (reminds me of the 41CV), love the RPN, like that I can also go into algebraic mode so my wife can use it.
Programming is stait forward.
Best value in its price range!
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 45 - 54
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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Review 3 for HP 35S Scientific Calculator

A step back toward the great calculators, 07/03/2009
By HPOldTimer, Denver, CO
Overall Rating: 5 out of 5 5 out of 5

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.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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1 of 1 people found this review helpful.

Review 4 for HP 35S Scientific Calculator

Great Calculator, 07/01/2009
By LandSurveyIntern, Anchoragem, AK
Overall Rating: 4 out of 5 4 out of 5

I began using HP calculators with the HP41 for Surveying calculations. Since then I have become hooked on RPN. Now I am planning to take the Professional Land Surveyor exam and the HP35S is the latest calculator allowed to take the exam. I think this is a great calculator for the cost and because it has most of the functionality of the HP41 which was an outstanding calculator. If you are not familliar with RPN then you might not care for that feature, but another cool thing is that this calculator lets you choose between either Algebraic or RPN.
Product Attributes:
Value: 4 out of 5 4 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 45 - 54
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every few days
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Review 5 for HP 35S Scientific Calculator

Excellent calculator for technical use., 06/30/2009
By Card1, Louisville Ky.
Overall Rating: 5 out of 5 5 out of 5

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.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 45 - 54
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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2 of 2 people found this review helpful.

Review 6 for HP 35S Scientific Calculator

Mother of all calculators, 06/06/2009
By DesignIt
Overall Rating: 5 out of 5 5 out of 5

There is no other like it. The most versatile...
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
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Review 7 for HP 35S Scientific Calculator

06/05/2009
By Stevieman, sacramento ca.
Overall Rating: 5 out of 5 5 out of 5

typical high quality HP calculator,
a fair substitute for the HP 11/15C of old;
very handy case
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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Review 8 for HP 35S Scientific Calculator

Walmart Associate Walmart Associate
Great RPN and Algerbraic Calculator, 04/16/2009
By Omega2020, Tampa, FL
Overall Rating: 5 out of 5 5 out of 5

For anyone looking for a really good scientific calculator for engineering or mathmatics this is for you. I am a electrical engineering student and this calculator is permitted on all exams taken at the College of Engineering at USF. Also is is permitted on the FE exam as well as the PE exam. Its programable and that really makes repetitive calculatons containing the same varriables very easy. You can use and program the calculator either in RPN mode or Algebraic mode. This calculator has cut down the time it takes to do several calculations, though it does take quite a bit of time to program but in the end its worth it. I hightly recomened it.
Product Attributes:
Value: 4 out of 5 4 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 18 - 24
Gender: Male
Has owned product for: 11 - 12 months
Uses product: Every few days
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1 of 1 people found this review helpful.

Review 9 for HP 35S Scientific Calculator

HP 35s is the one for an exam, 04/12/2009
By AvgShopper123, Midwest
Overall Rating: 5 out of 5 5 out of 5

This is a first class calculator. You can't go wrong ordering it for an exam, much better than the HP 33 it replaced. The key thing is that RPN makes entering and manipulating data really easy--during a test, you don't have time to jot numbers down on paper that you need to use a few steps later. Secondly, this calculator has a non-volatile memory, so when it shuts down, it remembers the last 4 entries you typed. Other calculators lose their memory when they shut off. Third, the calculator has 26 non-volatile memory locations, not just one or two. Fourth, it can be programmed. The list goes on... Don't bother with the others if you can afford this one. It will save you time and lessen frustration during the test!
Product Attributes:
Value: 4 out of 5 4 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 35 - 44
Gender: Male
Has owned product for: 2 - 3 months
Uses product: Every day
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1 of 1 people found this review helpful.

Review 10 for HP 35S Scientific Calculator

SO FAR SO GOOD, 03/02/2009
By TECHYR02, FLORIDA
Overall Rating: 5 out of 5 5 out of 5

USING FOR A SURVEY TECH. CLASS, ONLY HAD IT A LITTLE WHILE SO FAR NO PROB. WISH CD MANUAL A LITTLE BETTER
Product Attributes:
Value: 3 out of 5 3 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: A few times per month
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Review 11 for HP 35S Scientific Calculator

Replaced HP28S, 10/16/2008
By chem
Overall Rating: 4 out of 5 4 out of 5

Not a bad bang for the buck. Easy to program. Look and feel of the classic HP calculators. Large display for us old folks. Using this as a replacement for my HP28S was a downgrade but I no longer need complicated graphing capabilities. Hard to get use to only having 4 in the stack. Should be 31 or more like 100.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
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Review 12 for HP 35S Scientific Calculator

09/25/2008
By SundanceKid
Overall Rating: 4 out of 5 4 out of 5

Nice calulator, especially for the money.
Only thing I don't like is the lack of a decent printed manual. A CD is included but much prefer a printed version like HP did 20 years ago.
Product Attributes:
Value: 4 out of 5 4 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
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Review 13 for HP 35S Scientific Calculator

A very impressive calculator, 09/11/2008
By torella, Buffalo, NY
Overall Rating: 4 out of 5 4 out of 5

The equation solver is awesome.
The only thing that concerns me is its durability...but I like this calculator so much that I recently purchased another to keep as a back-up.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 35 - 44
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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Review 14 for HP 35S Scientific Calculator

Good RPN Calculator, 09/03/2008
By Tngkn, Texas
Overall Rating: 5 out of 5 5 out of 5

Having been using HP-65, 67, 97 and 41CV for such a long time, this is the inexpensive RPN calculator I have to have.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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Review 15 for HP 35S Scientific Calculator

useful product, 08/28/2008
By an anonymous customer, Ventura County, CA
Overall Rating: 5 out of 5 5 out of 5

Much easier than trying to do simple calculations I need in the field by hand. Programming easy and has useful conversion factors. A real time saver and takes up no room.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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Review 16 for HP 35S Scientific Calculator

Good for what it is, 05/26/2008
By k6mr, Redding, CA
Overall Rating: 4 out of 5 4 out of 5

Bought the HP35S only because it is 1 of only 2 HP calculators allowed for the State of California PE/EIT exams. I already have a HP48 for general use which is much more powerful but not allowed.

The calculator I originally received (received via site to store in just 3 days) had a problem (one key was difficult to activate) which was an obvious manufacturing defect. Called HP support, had the replacement within a week.

Otherwise it works as advertised. I stay with HP calculators because I really like RPN format, which I believe only HP makes. There is nothing really special about this calculator, but it does what it is supposed to do and is pretty cheap for the power it has. I did try the HP33S previously (the other allowed calc) but found the key layout on that one hard to use. The HP35 has a more 'normal' layout for previous HP users.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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13 of 13 people found this review helpful.

Review 17 for HP 35S Scientific Calculator

The best calculator bang for buck., 04/22/2008
By civileng, Martinsburg, WV
Overall Rating: 5 out of 5 5 out of 5

I have worked as a Civil Engineer for several years. I had always used a TI calculator until I borrowed a friends HP 33s. The keys where not in the best location, but I liked the RPN better than algebraic that TI uses. The HP RPN just makes sense. I bought my own HP33s and I was hooked on RPN so bye-bye TI for good. The HP35s came out and I had to have it. Money well spent!!! This calculator is very helpful on the Professional exams such as the FE and PE.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 25 - 34
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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1 of 1 people found this review helpful.

Review 18 for HP 35S Scientific Calculator

It's an RPN calculator, 04/09/2008
By Sambeaux, Lafayette, LA
Overall Rating: 5 out of 5 5 out of 5

It's a nice RPN calculator. I can't say I need the programmable features, but it's one of the cheapest RPN calcs around. It serves its purpose admirably. I just wish HP would see fit to give it more than a 4 position stack. On the other hand, it's nice to see 2 stack positions at a time.
Product Attributes:
Value: 4 out of 5 4 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 35 - 44
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every few days
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Review 19 for HP 35S Scientific Calculator

04/03/2008
By HPUser
Overall Rating: 5 out of 5 5 out of 5

The best of the modern non-graphing HPs. Solid unit, good build.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
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Review 20 for HP 35S Scientific Calculator

NICE CALCULATOR, 03/17/2008
By ChemicalEngineerTim
Overall Rating: 4 out of 5 4 out of 5

Good price - great features, bought it to prepare for the PE exam. Has both the HP and the typical (non-HP) calculator data entry.
Product Attributes:
Value: 4 out of 5 4 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
Has owned product for: 2 - 7 weeks
Uses product: Every day
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