---
product_id: 48591129
title: "CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black"
brand: "casio"
price: "€ 51.74"
currency: EUR
in_stock: false
reviews_count: 13
url: https://www.desertcart.it/products/48591129-casio-fx-991ex-advanced-engineering-scientific-calculator-uk-version-black
store_origin: IT
region: Italy
---

# Compact 16.8 x 8.2 x 1.8 cm design 552 functions for every calculation Solar powered with battery backup CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black

**Brand:** casio
**Price:** € 51.74
**Availability:** ❌ Out of Stock

## Summary

> 🔢 Elevate your calculations with the UK’s ultimate scientific sidekick!

## Quick Answers

- **What is this?** CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black by casio
- **How much does it cost?** € 51.74 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/48591129-casio-fx-991ex-advanced-engineering-scientific-calculator-uk-version-black)

## 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

- • **Sleek & Portable:** Lightweight and compact design fits perfectly in your bag or desk setup for on-the-go productivity.
- • **Durable & Protective:** Includes a smart cover that doubles as a case, keeping your calculator safe and stylish.
- • **Trusted UK Bestseller:** Join thousands of professionals and students who rely on the UK’s top-selling scientific calculator.
- • **Eco-Friendly Power Duo:** Solar powered with reliable battery backup ensures uninterrupted performance anytime, anywhere.
- • **Master Complex Calculations:** Packed with 552 advanced mathematical functions to tackle GCSE, A-level, and beyond.

## Overview

The CASIO FX-991EX is the UK’s best-selling advanced scientific calculator, featuring 552 mathematical functions, solar power with battery backup, and a compact, durable design. Ideal for advanced GCSE, A-level, and higher education, it combines reliability and versatility in a sleek black finish.

## Description

Great prices on your favourite Office brands plus free delivery and returns on eligible orders.

Review: Good purchase - Does the job and up to spec
Review: Perfect for secondary school - Good quality calculator with its own cover that doubles as a case

## Features

- The UK’s best-selling advanced Scientific calculator.
- Especially recommended for advanced GCSE, a/as level and higher.
- This model has now been replaced with the new upgraded FX-991 packed with addtional features
- 552 Mathematical functions
- Solar powered with battery backup

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0719FWP3X |
| Batteries | 1 CR123A batteries required. (included) |
| Best Sellers Rank | 19,596 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 54 in Scientific Calculators |
| Brand | Casio |
| Colour | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (9,512) |
| Date First Available | 9 April 2016 |
| Item Weight | 89.9 g |
| Lines Per Page | 2 |
| Manufacturer | CASIO |
| Manufacturer Part Number | FX-991EX |
| Material Type | Plastic |
| Model Number | FX-991EX |
| Number of Items | 1 |
| Product Dimensions | 16.8 x 8.2 x 1.8 cm; 90.01 g |

## Product Details

- **Brand:** Casio
- **Calculator Type:** Engineering/Scientific
- **Colour:** Black
- **Display type:** Natural Textbook Display
- **Global Trade Identification Number:** 04549526603327
- **Material:** Plastic
- **Model name:** FX-991EX
- **Number of batteries:** 1 CR123A batteries required. (included)
- **Power source:** Solar & Battery Powered (LR54)
- **Product dimensions:** 16.8L x 8.2W centimetres

## Images

![CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black - Image 1](https://m.media-amazon.com/images/I/61DwjPr90aL.jpg)
![CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black - Image 2](https://m.media-amazon.com/images/I/71icOjAJXLL.jpg)
![CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black - Image 3](https://m.media-amazon.com/images/I/71wygIjTn6L.jpg)
![CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black - Image 4](https://m.media-amazon.com/images/I/819FZlTX6ZL.jpg)
![CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black - Image 5](https://m.media-amazon.com/images/I/81vZ5yRGdwL.jpg)

## Questions & Answers

**Q: Is this suitable for university level**
A: It depends. I know from experience that Open University maths exams do not allow calculators that can evaluate integrals so, in that case, this would not be allowed. I would ask the faculty what calculators are permissible in exams as this might also depend on the module, as well as the institution.

**Q: Does this calculator have a linear regression function?**
A: Yes. A quick search on youtube for LG produced results. Good luck!

**Q: Does this have CAS?**
A: No this calculator does not have CAS. CAS stands for "Computer Algebra System", which means that calculators with this do symbolic algebra. This is why CAS calculators are banned in most exams.

**Q: Does it have Standard Deviation?**
A: Yes it does.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good purchase
*by J***E on 23 December 2025*

Does the job and up to spec

### ⭐⭐⭐⭐⭐ Perfect for secondary school
*by M***K on 11 October 2025*

Good quality calculator with its own cover that doubles as a case

### ⭐⭐⭐⭐⭐ Still Going Strong-A Worthwhile Investment
*by V***T on 1 September 2025*

I'm so happy with the calculator I purchased over a year ago; it has been a true workhorse. The display is still crystal clear, and the keys haven't faded or stuck, despite frequent use. The battery life has also been surprisingly good, and I haven't needed to replace it yet. I would absolutely recommend this calculator to anyone looking for a reliable and long-lasting tool. It's a great investment, and I'm very satisfied with my purchase.

## Frequently Bought Together

- CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black
- Ks3 Science Complete Revision & Practice - Higher (With Online Edition)
- Casio FX-991CW Scientific Calculator, 540 Functions and Natural Display

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-09*