Last Updated: October 26, 2019 (Refresh Now)
Casio fx 115ES PLUS Engineering Scientific Calculator
Last Updated: October 26, 2019 (Refresh Now)
9.0
SCORE
/10
Total Reviews
1000
Old Reviews
427
Unverified
57
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Review Analysis - 516 recent, verified reviews
Detailed Mode
Ease of Use
62calculator, functions, complicated, user friendly, use
+94%
-6%
" ... Love the readout and ease of use. ... "
" ... It’s easy to use. ... "
" ... I love this calculator so simple ... "
" ... Hard to learn but once you learn it it's easy to use. ... "
" ... It's easy to use and the manual is easy to follow. ... "
" ... I like this calculator because it is easy to use. ... "
" ... easy to use ... "
" ... Easy to use multiple uses ... "
For Kids
47college, school, students, student, math
+100%
" ... I paid over $100 for two others but this one he can use in all his engineering and math classes. ... "
" ... Bought this for my son he needs it for school excellent product is been 3 years, the calculator is like new. ... "
" ... I have been using this calculator since I was an engineering student. ... "
" ... Buying a scientific calculator is great for engineering students. ... "
" ... My daughter needed this for Chemistry and Algebra. ... Will be buying one for my son when he is old enough to need one for school. ... "
" ... Very well suited for my son's advanced maths topics. ... "
" ... exceptional, my daughter loves it ... "
" ... Been taking a bunch of science class at college and this calculator is my buddie. ... "
Apps
34functions, calculus, math, statistics, solving
+85%
-15%
" ... Used this for my PreCalc class since my TI84 graphing calculator wasn't allowed. ... "
" ... You won't find a better calculator for basic science use. ... "
" ... Great calculator for College Algebra course. ... "
" ... Or even the google calculator which I can do on my phone. ... "
" ... Good calculator for basic calculations, conversions/kilojoules, fractions, scientific calculations. ... "
" ... Amazing calculator, can work with complex numbers and other functions. ... "
" ... This calculator can solve system of equations, do some matrix operations, deal with complex numbers, some calculus, solve 3rd degree polynomials, etc! ... "
" ... i love this calculator ... "
Price
31calculator, money, worth, best, waste
+90%
-10%
" ... It is quite affordable and has a lot more functions than other types of calculators that are at the same price range. ... "
" ... For 20 bucks it's a worth while investment. ... "
" ... The price is definitely the cheapest here. ... "
" ... It's perfect and cheap compare to others' price. ... "
" ... Its really value for money. ... "
" ... I wasn't very sure about the product considering the price, but it beat my expectations. ... "
" ... But for the price it’s forgivable. ... "
" ... Good calculator for the money. ... "
Features
31functions, calculator, mode, useful functions, many useful
+97%
-3%
" ... Feature packed and elegant in its design and simplicity of use. ... "
" ... It have all the features I need ... "
" ... Great calculators with many useful functions. ... "
" ... It have all the features I need ... "
" ... Not expensive and has many modes and functions for mathematics. ... "
" ... Greadcalculator with so many functions so useful in my business major, in statistics, accounting and economics classes. ... "
" ... Has just enough features . ... "
" ... I use it for engineering classes and it honestly has more features than I will ever need. ... "
Controls
28calculator, keys, functions, button, casio
+68%
-32%
" ... Love that I can switch the answer from decimal form to fraction form with just one button, main reason that I got it ... "
" ... All the most common functions are easily accessible and most functions are clearly displayed on the surface of the calculator, there is barely any need to memorize syntax from the manual ... "
" ... Can choose traditional display instead of natural display. ... "
" ... The mixed number key makes life easier, too. ... The conversion key from fraction to decimal is terrific, as is the natural display. ... "
" ... This is because it allows you to use the polar form for some numbers (in Mag and /_ notation, it actually has the /_ (phase) button) and rectangular a + b i notation for others. ... "
" ... i used casio calculator for 5 years already, it is the easiest thing to find the functions you want, just look at the calculator! ... you will see the button you want in seconds. ... "
" ... This is an awesome calculator however I find that too soon the print on the buttons begins to wear off. ... "
" ... Bought it for FE exam, does the job, keys are responsive ... "
Product Reliability
24years, still working, months, working well, working great
+88%
-13%
" ... I've had this calculator for a couple years now and it's still my main calculator to this day even in calculus. ... "
" ... No problems Wjat so ever after 3 months of use. ... "
" ... These buttons have been reliable and I've been able to work fast without any errors. ... "
" ... I had my last one over three years and just now had to replace it. ... "
" ... Bought this calculator about 5 years ago when i was in high school and it has worked great even through college. ... "
" ... It is working well. ... "
" ... It's still working great today in 2018. ... "
" ... It is working well. ... "
Display Clarity
17calculator, screen, equation, display, decimal
+76%
-24%
" ... The conversion key from fraction to decimal is terrific, as is the natural display. ... "
" ... The natural display in fraction and radical form is very useful. ... "
" ... Can choose traditional display instead of natural display. ... "
" ... I love how it shows your inputted and outputed calculations on the screen. ... "
" ... Well lit display ... "
" ... The wide screen makes it easy to see, and some of the functions it has work easily. ... "
" ... I love how it shows your inputted and outputed calculations on the screen. ... "
" ... It displays both ratio's and decimal easily. ... "
Marketplace
13product, exactly, works, time, expected
+100%
" ... Just as described ... "
" ... Got the product just as described. ... "
" ... Functions as described. ... "
" ... just as described ... "
" ... Good item thanks ... "
" ... Works as expected. ... "
" ... Exactly as described ... "
" ... Got the product just as described. ... "
Fit
12fit, calculator, well, stay, pocket
+67%
-33%
" ... This calculator allows you to type in your calculations naturally, as they appear on paper. ... "
" ... I personally like this calculator just because it can do equations really well and I hardly had any work to show on paper, but it is hard to get acquainted to although when you do it works amazing ... "
" ... Took the PE exam with this and is great fit for purpose of engineering calculations ... "
" ... It's very lightweight and fits perfectly in the front pocket of her backpack. ... "
" ... I like the small design, it's not bulky and slips right into the side pocket of my bag. ... "
" ... I just bought this one as it is the latest one that fit my needs (I think) also it has the solar thingy so I don’t have to worry about it ran out of battery anymore. ... "
" ... I just bought this one as it is the latest one that fit my needs (I think) also it has the solar thingy so I don’t have to worry about it ran out of battery anymore. ... "
Product As Described
9product, exactly, works, expected
+100%
" ... Functions as described. ... "
" ... Got the product just as described. ... "
" ... just as described ... "
" ... just as described ... "
" ... Got the product just as described. ... "
" ... Exactly as described ... "
" ... Product exactly as advertised ... "
" ... Just as described ... "
Overall performance
8gets the job, job, fx, functions, engineering
+100%
" ... The speed that you can perform a variety of common calculations is astounding. ... "
" ... Reliable, beautifully designed, and appropriately-priced. ... "
" ... Still use it at my engineering job also. ... "
" ... It gets the job done and it’s bigger than it looks. ... "
" ... Gets the job done. ... "
" ... Gets the job done for sure ... "
Delivery
8arrived, time, quickly, fast, excellent
+88%
-13%
" ... Arrived on time as well. ... "
" ... Item arrived quickly and was just as described. ... "
" ... Fast Shipping,Great Product Excellent Price and Quality!! ... "
" ... The calculator was delivered within 2 days. ... "
" ... Arrived quickly and in great condition. ... "
" ... excellent product, arrived on time ... "
" ... Got the product just as described. ... "
Build Quality
7build, nice, stay, really, price
+57%
-43%
" ... Buttens are a little sloppy but overall nice build. ... "
" ... Great product especially for the price and even better because the price dropped the day I ordered. ... "
" ... really nice, robust, fast, and has a lot more function than the black casio one, I really like that it has a lot of build in constants, really handy ... "
Size
6fits, solar, small, like, bag
+100%
" ... Like others have said, it's small and slim but does all that you need. ... "
" ... It's very lightweight and fits perfectly in the front pocket of her backpack. ... "
" ... It's much smaller, cheaper, solar powered, fits in a shirt pocket, and is easy to use. ... "
" ... I like the small design, it's not bulky and slips right into the side pocket of my bag. ... "
Battery Life
6years, used, solar, replace, bought
+100%
" ... Good material and good battery. ... "
" ... It also has a ton of useful physics constants that I've used in many chemistry and physics courses, and its battery is seemingly infinite. ... "
" ... I've also used it almost every day for almost four years and have never had any battery issue. ... "
" ... I just bought a new one instead of changing battery. ... "
" ... Built in solar recharge eliminates battery changes. ... "
" ... Built in solar recharge eliminates battery changes. ... "
User Manual
5user, read the manual, functions, take, read
+60%
-40%
" ... Take time to learn all of the functions, read the manual, and this Casio will take you far. ... "
" ... It's easy to use and the manual is easy to follow. ... "
" ... Keys are clearly marked, and complicated functions well explained in the manual. ... "
Setup
5take, professional, product, far, engineer
+100%
" ... This calculator honestly surprised me at how useful it is for an engineer. ... "
" ... This is a must have for anyone trying to take a PE (professional Engineer) exam. ... "
" ... I also used it to take the Professional Engineer exam. ... "
" ... Very simply, this product is far better and far cheaper than the equivalent TI product for the the Survey test to become a professional Civil Engineer in the state of california. ... "
" ... Perfect calculator for the professional engineer exam. ... "
Design
5use, nice, like, casio, build
+80%
-20%
" ... Far better than other competitors in design and ease of use. ... "
" ... I also like how the design is simple and not with fancy designs. ... I’ve seen another Casio with cool black design, but students find the design distracting when trying to use “shift” symbols. ... "
" ... Buttens are a little sloppy but overall nice build. ... "
" ... really nice, robust, fast, and has a lot more function than the black casio one, I really like that it has a lot of build in constants, really handy ... "
Comfort
5hands, stay, stars, place, keys
+40%
-60%
" ... It feels cheaply made and I don’t have time to read a book to learn how to use a calculator. ... "
" ... They don’t stay in place either makes it look very cheap ... "
Software Platform
4use, really, plus, solving, good
+75%
-25%
" ... Where the Plus version really shines is the additional settings. ... "
" ... Or even the google calculator which I can do on my phone. ... "
Returns
4years, last one
+25%
-75%
" ... I set it aside intending to return it, but now find that I have missed the allowable return window and am stuck with it. ... "
" ... I want to return, but do know is that ok? ... "
" ... I want to return, but do know is that ok? ... "
Screen Protection
4hard, equation
+25%
-75%
" ... Screen broke after one day of use. ... "
" ... The screen came damaged. ... "
Video Playback
3watch
+100%
" ... Do yourself a favor and watch a couple YouTube videos to get an idea for what this thing is really capable of so that you can maximize its effectiveness for you. ... "
" ... And it’s popular enough, so there’s YouTube videos on how to use more functions if you lost the booklet. ... "
" ... There are plenty of Youtube videos you can watch on this. ... "
Call quality
3perfect, answer, 5570898
+100%
" ... Having the answer key right next to the equal sign is perfect, because you don't have to shift to type in your previous answer. ... "
" ... This scientific call is awesome and perfect! ... "
" ... Answer: 5570898.581 ... Answer: 5570898.583 ... Answer: 5570898.583 ... Answer: 5570898.583 ... "
Storage
3size, fits, calculator, bag
+100%
" ... A decent amount of storage. ... "
" ... I imagine this will sit in my desk drawer for many years to come. ... "
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Specifications
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