Struggling with Complex Maths Problems?

Advanced calculations can be challenging without the right tool. Whether you're tackling Advanced GCSE, A/AS Levels, or Highers, you need a powerful and reliable calculator to simplify your work.

Master Complex Calculations with Ease

The Casio FX-991CW is the upgraded version of the FX-991EX, featuring a high-definition display and an improved menu layout for faster navigation. With 540+ functions, it's designed to handle everything from basic arithmetic to advanced mathematics.

Ideal for UK Exams

This calculator is approved for Key Stages 3, 4 & 5 and is allowed in every UK exam where calculators are permitted. It’s perfect for Advanced GCSE, A/AS Levels, and Highers, providing accurate results when you need them most.

Built for Performance & Durability

The dual power system—solar with battery backup—ensures uninterrupted performance. It also features an auto power-off function to save energy, and a clip-on protective cover for long-lasting durability.

✅ 540+ Advanced Functions – Supports algebra, calculus, statistics & more.
✅ Dual Powered – Solar power with battery backup for reliability.
✅ Exam Approved – Suitable for Advanced GCSE, A/AS Levels, and Highers.
✅ Clear Display & Navigation – High-definition screen with a user-friendly menu.
✅ Durable Design – Includes a clip-on protective cover and a 3-year guarantee.