---
product_id: 48260223
title: "Casio FX-991EX Engineering/Scientific Calculator, Black (European Version), 3\" x 6.5\" x 0.4\""
brand: "casio"
price: "KD 1.95"
currency: KWD
in_stock: false
reviews_count: 10
url: https://www.desertcart.com.kw/products/48260223-casio-fx-991ex-engineering-scientific-calculator-black-european-version-3
store_origin: KW
region: Kuwait
---

# High-res LCD for complex data QR code visualization Dual solar & battery power Casio FX-991EX Engineering/Scientific Calculator, Black (European Version), 3" x 6.5" x 0.4"

**Brand:** casio
**Price:** KD 1.95
**Availability:** ❌ Out of Stock

## Summary

> 📐 Elevate your calculations—where precision meets innovation!

## Quick Answers

- **What is this?** Casio FX-991EX Engineering/Scientific Calculator, Black (European Version), 3" x 6.5" x 0.4" by casio
- **How much does it cost?** KD 1.95 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/48260223-casio-fx-991ex-engineering-scientific-calculator-black-european-version-3)

## Best For

- casio enthusiasts

## Why This Product

- Trusted casio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Visualize your math:** Generate QR codes to instantly graph and share your calculations with peers via the Online Visualization Service.
- • **Lightweight powerhouse:** Compact 91g design fits effortlessly in your bag, ready for exams, meetings, or on-the-go problem solving.
- • **Power that never quits:** Dual solar and battery power ensures uninterrupted performance wherever you crunch numbers.
- • **See more, solve faster:** High-resolution LCD displays full expressions and detailed data, eliminating guesswork and boosting accuracy.
- • **Master advanced calculus:** Supports integrals, differentials, vectors, inequalities, and distributions—perfect for A-level and beyond.

## Overview

The Casio FX-991EX is a cutting-edge scientific calculator featuring 552 functions, a high-resolution LCD, and dual solar/battery power. It supports advanced math including integrals, differentials, vectors, and distributions, and offers QR code generation for instant graphical visualization. Lightweight and durable, it’s the go-to tool for students and professionals aiming to excel in complex calculations.

## Description

Scientific calculator features a high-resolution LCD that displays more information at once to help you work through large spreadsheets, matrix calculations and more. Its comprehensive set of advanced calculations means you can work on integration and differential calculus along with vector and inequality calculations. Online Visualization Service allows you to generate a QR code for your problem, and then scan the code to immediately see a graphical representation of your data. Students can then see their collective data in real time with other students. Two-way power utilizes both solar and battery power for reliable operation in any setting. Calculator is perfect for basic math, Calculus, Algebra, Geometry, Probability and Statistics.

Review: The Best Scientific Calculator on the Market - As a little bit of a calculator nerd, I've used many different calculators over the years. When it comes to scientific calculators there is a vast range to choose from, Casio being at the forefront of those avaliable and often the go to calculators for many students. However, as time progresses even with experience in using the relatively simple Casio-style scientific calculators, according the more complex functions can be a little bewildering. I heard about the FX-911EX approximately a year ago when they were first released in Japan and extremely hard to get hold of. I was amazed by their high resolution display to allows the calculator to display full text rather than abbreviations. For example, say goodbye to the constant or conversion codes on the lid as all the information may be read from the display. A year later they have become more avaliable, albeit more expensive than if you import them. But trust me, the cost for ease of use is a blessing and so don't be deterred. It also has far more advanced functions, which I would normally only expect to find on my Casio FX-CG20 Graphical calculator, such as Distributions. I've never looked back at any other scientific calculator, and I would highly recommend it to anyone taking a GCSE, A-Level or Higher Education. Some of my colleagues having used my calculator have even gone out and bought their own - it's just a frankly awesome calculator!
Review: A level maths - The best calculator for A level maths or even in general

## Features

- Number of functions: 552
- Power supply: Battery
- Calculation of integral, defined integral and differentials
- Display technology: LCD

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ZZ93346 |
| Best Sellers Rank | 170,453 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 219 in Scientific Calculators |
| Department | Office Equipment & Equipment Supplies |
| Guaranteed software updates until | unknown |
| Item model number | FX-991EX |
| Manufacturer | Casio Computer Co., Ltd |
| Product Dimensions | 23.01 x 14.2 x 2.69 cm; 91 g |

## Product Details

- **Brand:** Casio
- **Calculator Type:** Engineering/Scientific
- **Colour:** Black
- **Display type:** LCD
- **Material:** Plastic
- **Model name:** ClassWiz
- **Number of batteries:** 1 LR44 batteries required. (included)
- **Power source:** Battery Powered
- **Product dimensions:** 16.5L x 7.6W centimetres
- **Screen size:** 7.07 Inches

## Images

![Casio FX-991EX Engineering/Scientific Calculator, Black (European Version), 3" x 6.5" x 0.4" - Image 1](https://m.media-amazon.com/images/I/61r7pV9dztL.jpg)
![Casio FX-991EX Engineering/Scientific Calculator, Black (European Version), 3" x 6.5" x 0.4" - Image 2](https://m.media-amazon.com/images/I/31VcZ3J3k0L.jpg)
![Casio FX-991EX Engineering/Scientific Calculator, Black (European Version), 3" x 6.5" x 0.4" - Image 3](https://m.media-amazon.com/images/I/71mCfR49bYL.jpg)

## Available Options

This product comes in different **Pattern** options.

## Questions & Answers

**Q: Is it ok to use for 2017 exams?**
A: Not only is it OK for 2017 exams it's ESSENTIAL for the new linear A-level maths exams, for students beginning 6th form this September, as exam boards aren't going to hand out statistical tables any more, so calculators like this one are the MINIMUM SPECIFICATION required. In fact, this calculator is specifically mentioned on the MEI website.

**Q: Does this come with an English instruction manual?**
A: Mine came with most European languages including English, believe the problems may have been teething problems. The manual is downloadable from Casio's website as a pdf.

**Q: Is this calculator ok for univeristy exams in economics - the only specification is that the calculator cannot store text**
A: It cannot store text

**Q: I just bought it and it's only setting is being powered by solar cells, but it only works when i put it in the sun, can I fix this?**
A: There is an internal battery as back-up. Just remove small screws fixing the rear case,  replace it. If that doesn't solve the problem, you, return the calculator for repair under warranty.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Best Scientific Calculator on the Market
*by S***G on 25 April 2016*

As a little bit of a calculator nerd, I've used many different calculators over the years. When it comes to scientific calculators there is a vast range to choose from, Casio being at the forefront of those avaliable and often the go to calculators for many students. However, as time progresses even with experience in using the relatively simple Casio-style scientific calculators, according the more complex functions can be a little bewildering. I heard about the FX-911EX approximately a year ago when they were first released in Japan and extremely hard to get hold of. I was amazed by their high resolution display to allows the calculator to display full text rather than abbreviations. For example, say goodbye to the constant or conversion codes on the lid as all the information may be read from the display. A year later they have become more avaliable, albeit more expensive than if you import them. But trust me, the cost for ease of use is a blessing and so don't be deterred. It also has far more advanced functions, which I would normally only expect to find on my Casio FX-CG20 Graphical calculator, such as Distributions. I've never looked back at any other scientific calculator, and I would highly recommend it to anyone taking a GCSE, A-Level or Higher Education. Some of my colleagues having used my calculator have even gone out and bought their own - it's just a frankly awesome calculator!

### ⭐⭐⭐⭐⭐ A level maths
*by Z***A on 22 May 2025*

The best calculator for A level maths or even in general

### ⭐⭐⭐⭐⭐ Another UK rip-off - buy on Amazon.com!
*by R***P on 15 January 2017*

Lean, mean and not messing around; beware the new kid on the block! It annihilates the FX7400GII in terms of overall usefulness, yet can be had for two-thirds of the price (though this is beginning to creep up!). Appearance wise, Casio have broken with their traditional fx-83GT/fx-991ES shape and created something very different, with a clean, new look, that's almost a work of art. Its appearance is so good, I suspect it will sell just on those grounds alone! Put simply, it has real style; you almost feel in possession of a fashion accessory! Most photos don't do justice; hopefully my photo will! Although it isn't a graphical calculator as such, it has the capacity to draw graphs on your smart phone or tablet, via a scannable QP code and an app.They've improved the statistical functions so that in addition to the standardized, normal cumulative probaility distribution, you now also get the inverse cumulative normal distribution function, plus binomial and Poisson, probability and cumulative probability distributions. These are very useful to anyone doing S1 or S2 statistics modules for A-Level, and dispense with the need for tables of these functions. Most of this is absent on FX7400GII! What it offers, however, is still way short of the fx-9750GII, in this respect. You also get the ability to solve quadratic, cubic or quartic polynomial inequalities and the answer is given just as it should be written down, using the correct inequality symbols! Even the FX9860GII doesn't offer this at present! Other enhancements include better vector facilities: it now offers the ability to show you the angle between two vectors rather than leaving you to work it out via the dot-product. The FX7400GII has no vector facilities at all and doesn't even have a matrix mode! The FX9750GII does matrices but no vector mode! Only the next one up from that, the FX9860GII, does both, apart from the FX991ES, now available at roughly £16. For some, the cherry on the cake will be the addition of a basic spreadsheet mode (absent on the FX7400GII and the FX9750GII calculators). You also get an equation solving mode which is an enhanced version of the FX991ES. It now features a 'Solv' facility, designed to give approximate solutions, to many types of equation, as presented, using Newton's method. In this respect, however, the FX9750GII and FX9860GII are light years ahead with the 'SolveN' facility, as this often gives exact solutions (even as multiples of pi, where relevant on the fx-9860GII). You get a crystal clear, 'natural' display, with answers presented as surds, or multiples of pi, including fractions, where possible. FX7400GII can't do this and the FX9750GII only does it when uprated.The processor also seems faster than before. If there is a drawback, it has to be the fact that display history is cleared when the calculator is switched off and once you've performed a calculation, you can not go back, edit the history and recalculate, once the display shows ANS. Amazingly enough, evidence suggests that UK exam boards will allow it, despite no CAS features allowed. However mild, this calculator does have CAS features because it uses symbolic logic to write inequality regions. Fortunately, many teachers have taken to it and I suspect wires were be pulled by the more influential ones ('old boy' networks etc!) to get it approved for UK, GCE exams. Whether or not they'll achieve this for IB use, is another matter! Without an Exam Mode, similar to the FX9860GII or Graph 75/95, it would definitely be banned in France, for IB use, on account of the vector commands. It goes without saying, that now it's regarded as suitable for UK, GCE exam use, the FX991ES may now bite the dust or be offered at a lower price. This is something Casio could easily do because the circuit board is almost identical to the FX85GT-Plus, often available for under £10 and popular with GCSE students. In the past, however, Casio went to great lengths to prevent people getting too much of a bargain! Take the FX83ES as an example. It shared the same type of circuit board as the FX991ES and an HB pencil applied to the P4 jumper on it, would effectively turn it into one, from something no better than the current FX85GT Plus, within seconds. Yes!, you unleashed 5 extra modes and all the functions of FX991ES. Casio reacted by encapsulating the P4 jumper, to make it virtually impossible to do this any more. So, interesting times ahead and one does hope that models known and loved by students, here and abroad, like the FX9750GII will be around a bit longer. Ten years, however, is a long time in terms of technology and the FX9750GII first appeared in 2008! Does the FX991EX usher in the era of a new line up of scientific calculators? One wonders! In summary, there's a lot to like about Casio's new offering and one could say that at under £20, it redefines the market in the value-for-money stakes, providing many features hitherto not offered. On looks alone, it scores 10 out of 10. Its new keyboard layout, with extra keys such as OPTN (pity they didn't give it the EXIT key as well!) and main menu with attractive looking icons is also highly functional. It's slim, solar powered and has useful features not found on models costing three times the price. Here, I'm thinking of the polynomial inequality solver and the ratio solver. These will be an immediate hit with GCSE and A-Level students. Together with a basic spreadsheet facility in addition to other useful features which have been around for some time (eg matrices, vectors) and you really have an incredibly useful little machine! Some universities ban programmable calculators, so it's bound to have great appeal there! On the downside, don't expect the build quality of an fx-9860GII or even an fx-9750GII and do bear in mind that both these trounce it in terms of overall usefulness to the average A-Level student. Providing the fx-9750GII's OS is upgraded to the fx-9860GII, the extra facilities could be worth at least one extra grade in the exam! Savvy students good at IT would probably jump two grades! There are certain well-known, independent, private schools, which choose these models, for their students and in the US, a yellow school edition version of the fx-9750GII, is quite common. There may be school or college teachers out there thinking they should bulk buy the new fx991-ex. I'd urge caution! £50 will be affordable to most, and just on the basis of the 'SolveN' facility alone, justifies the extra cost of the fx-9750GII. With vastly superior statistical functions, bigger screen and the ability to graph functions, it really does win hands down. Both the fx-9750GII and the fx-9860GII are fully programmable, in a language almost identical to BASIC, with the full range of commands you'd expect. This could be a real aid in getting students interested in programming. With almost every mathematical and text symbol available, you can in effect write your own software to cover anything you consider important, but absent (within reason!). So, to maximize overall grades achieved, the fx-9750GII or fx-9860GII are still 'top dog' and this new offering must be seen as very much inferior. Let me end on another negative point! Whilst the price of the fx-9750GII has come down from £65 to £49.99, in the last couple of months, the price of this one has risen (to as much as £32.50, here on Amazon). At under £20, it's stellar value for anyone wanting to cut costs. At £27, however, it's starting to look expensive. Anything more than £30, and it falls into the 'betwixt and between' category. The average GCE student should pay the extra £18 and go for the fx-9750GII. The cheapskate, however, would be better off with the fx-991ES Plus, readily available at £18 (currently about £16 on Amazon) and still a great little calculator or the Canon F-789SGA (better made than the fx991es, with slightly more functions and selling for roughly £18). WHAT SEEMS RIDICULOUS IS THAT FROM AMAZON.COM, THE UK PURCHASER CAN GET IT FOR £18.50! IN OTHER WORDS YET AGAIN, THE UK CONSUMER GETS RIPPED OFF! DON'T HAVE IT!! Let's also be quite clear that despite its good looks and superb blend of features, the fx-991EX is really just a tweaked version of its predecessor. It's not programmable, isn't a true graphical calculator, can't connect to your PC and can't take additional apps, like an fx-9860GII or uprated fx-9750GII. In short: a great little calculator but most GCE students would be far better off paying the extra for the fx-9750GII.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.kw/products/48260223-casio-fx-991ex-engineering-scientific-calculator-black-european-version-3](https://www.desertcart.com.kw/products/48260223-casio-fx-991ex-engineering-scientific-calculator-black-european-version-3)

---

*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-16*