--- product_id: 523514828 title: "Casio FX-991CW Advanced Scientific Calculator" brand: "casio" price: "£37.21" currency: GBP in_stock: true reviews_count: 11 url: https://www.desertcart.co.uk/products/523514828-casio-fx-991cw-advanced-scientific-calculator store_origin: GB region: United Kingdom --- # Solar powered with fast calculation speed High-res 2.25" display for complex data 552 advanced math functions included Casio FX-991CW Advanced Scientific Calculator **Brand:** casio **Price:** £37.21 **Availability:** ✅ In Stock ## Summary > 📐 Elevate your calculations—because precision is the new power move. ## Quick Answers - **What is this?** Casio FX-991CW Advanced Scientific Calculator by casio - **How much does it cost?** £37.21 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/523514828-casio-fx-991cw-advanced-scientific-calculator) ## 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 - • **Eco-Friendly Power:** Solar powered with battery backup ensures uninterrupted performance during long study sessions. - • **Master Advanced Math:** 552 functions including numeric integration, differentiation, vectors & inequalities for next-level problem solving. - • **See More, Solve More:** High-resolution LCD lets you visualize spreadsheets & 4x4 matrices with ease. - • **Trusted & Top-Ranked:** Ranked #51 in Scientific Calculators with 4.7-star rating from over 2,000 users—join the elite math pros. - • **Textbook-Perfect Display:** Natural textbook format means symbols & numbers appear exactly as in your study materials. ## Overview The Casio FX-991CW is a solar-powered advanced scientific calculator featuring a high-resolution 2.25-inch LCD that displays complex data like spreadsheets and 4x4 matrices. It supports 552 functions including numeric integration, differentiation, vectors, and inequalities, all presented in a natural textbook format for intuitive use. Highly rated and trusted by students and professionals alike, it’s designed to handle middle school through college-level math with speed and precision. ## Description A high performance scientific calculator with high resolution display increasing the amount of information displayed and super fast calculation speed for testing or performing the most advance mathematics. High resolution LCD screen allows viewing of more information like spreadsheets and 4x4 matrix calculations. This calculator has a comprehensive set of advanced calculations for integration & differential calculus, along with vector and inequality calculations. For middle school, high school and college math courses. ## Features - High Resolution Display to view more data like spreadsheets and 4x4 matrix calculations - Natural Text book display - symbols and numbers appear just as they do in textbook - Numeric Integration/Differentiation. 552 functions ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0BSJ33C4R | | Best Sellers Rank | #8,808 in Office Products (See Top 100 in Office Products) #51 in Scientific Calculators | | Brand | Casio | | Calculator Type | Engineering/Scientific | | Color | Black | | Customer Reviews | 4.7 4.7 out of 5 stars (2,162) 4.7 out of 5 stars | | Display Type | LCD | | Enclosure Material | Plastic | | Item Dimensions L X W | 7.7L x 16.2W centimeters | | Item Type Name | Casio Advanced Scientific Calculator | | Item Weight | 3.35 Ounces | | Manufacturer | Casio | | Mfr Part Number | FX-991EX | | Model Name | FX-991CW | | Model Number | FX-991CW | | Number Of Batteries | 1 LR44 batteries required. (included) | | Number Of Items | 1 | | Power Source | Solar Powered | | Screen Size | 2.25 Inches | | Unit Count | 1 Count | | Upc | 889232615011 | | Warranty Description | 1 YEAR | ## Product Details - **Brand:** Casio - **Calculator Type:** Engineering/Scientific - **Colour:** Black - **Power source:** Solar Powered - **Screen size:** 2.25 Inches ## Images ![Casio FX-991CW Advanced Scientific Calculator - Image 1](https://m.media-amazon.com/images/I/716Qoq3t58L.jpg) ![Casio FX-991CW Advanced Scientific Calculator - Image 2](https://m.media-amazon.com/images/I/71cqAki4GuL.jpg) ![Casio FX-991CW Advanced Scientific Calculator - Image 3](https://m.media-amazon.com/images/I/81hAm7XjKcL.jpg) ![Casio FX-991CW Advanced Scientific Calculator - Image 4](https://m.media-amazon.com/images/I/61gxxLY81kL.jpg) ![Casio FX-991CW Advanced Scientific Calculator - Image 5](https://m.media-amazon.com/images/I/81IcKs9I-IL.jpg) ## Questions & Answers **Q: Can it handle complex numbers in matrix ?** A: Yes. .or say within reason. Download the manual from Casio, its free and you dont need to buy calculator.. Look at page 114 and 107. Make sure you download fx-991CW...not fx-991. **Q: ¿Este artículo tiene garantía?** A: Good afternoon, I bought the calculators without a guarantee, but I really don't know if the product has a guarantee, although they should have a guarantee. Regards, AC. **Q: when you turn off the calculator, the calculation history is deleted or not?** A: The data is deleted when you turn it off. It's the only thing that keeps it from being the perfect scientific calculator for me. **Q: is there a ohms law calculator?** A: Well any calculator can "do" Ohms law. If ypur worried about remembering it, any programming calculator can store formulas for you...Calculated Industries (yellow calculators) makes 2 Electrical calculators, pretty sure both have Ohms law function key. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best calculator <3 *by on Reviewed in the United Arab Emirates 23 November 2025* Best calculator i ever used it does need time to learn but honestly didn’t deter me from loving it ### ⭐⭐⭐⭐⭐ Good one *by on Reviewed in the United Arab Emirates 31 October 2025* Good item... For starting high school ### ⭐⭐⭐⭐ Ok *by on Reviewed in the United Arab Emirates 22 November 2025* Ok ## Frequently Bought Together - Casio fx-991CW– Advanced Scientific Calculator with High-Res 4-Tone Display | Natural Textbook Display | 540+ Functions, Numeric Calculus, Matrix Solver | Ideal for Engineering, Science & Exams - Texas Instruments TI-36X Pro Engineering/Scientific Calculator | 9.7 Inch | Black. --- ## 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.co.uk/products/523514828-casio-fx-991cw-advanced-scientific-calculator](https://www.desertcart.co.uk/products/523514828-casio-fx-991cw-advanced-scientific-calculator) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-08-26*