---
product_id: 48591129
title: "CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black"
brand: "casio"
price: "8709 kr"
currency: ISK
in_stock: false
url: https://www.desertcart.is/products/48591129-casio-fx-991ex-advanced-engineering-scientific-calculator-uk-version-black
store_origin: IS
region: Iceland
---

# 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:** 8709 kr
**Availability:** ❌ Out of Stock

## Summary

> 🔢 Power your potential with precision and style!

## Quick Answers

- **What is this?** CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black by casio
- **How much does it cost?** 8709 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/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.
- • **Eco-Friendly Power:** Solar powered with battery backup ensures uninterrupted performance wherever you work.
- • **Future-Proof Upgrade:** Replaced by the new FX-991 model, but still a powerhouse for serious students and professionals.
- • **Exam-Ready Reliability:** Trusted UK best-seller, perfect for GCSE, A-level, and higher education exams.
- • **Master Complex Calculations:** 552 advanced mathematical functions to tackle any problem with ease.

## Overview

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

## Description

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

## 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 |
|---------------|-------|
| Manufacturer | CASIO |
| Brand | Casio |
| Model Number | FX-991EX |
| Product Dimensions | 16.8 x 8.2 x 1.8 cm; 90.01 g |
| Batteries | 1 CR123A batteries required. (included) |
| Colour | Black |
| Material Type | Plastic |
| Number of Items | 1 |
| Lines Per Page | 2 |
| Manufacturer Part Number | FX-991EX |
| Item Weight | 89.9 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/71wygIjTn6L.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.

## 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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**Shop now:** [https://www.desertcart.is/products/48591129-casio-fx-991ex-advanced-engineering-scientific-calculator-uk-version-black](https://www.desertcart.is/products/48591129-casio-fx-991ex-advanced-engineering-scientific-calculator-uk-version-black)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-22*