--- product_id: 253343244 title: "Casio Fx-991Ex Engineering/Scientific Calculator - Black" brand: "casio" price: "€ 1.28" currency: EUR in_stock: false reviews_count: 13 url: https://www.desertcart.pt/products/253343244-casio-fx-991ex-engineering-scientific-calculator-black store_origin: PT region: Portugal --- # Super-Fast Calculations QR Code Graphing High-Res Display Casio Fx-991Ex Engineering/Scientific Calculator - Black **Brand:** casio **Price:** € 1.28 **Availability:** ❌ Out of Stock ## Summary > 🔍 Unlock the Power of Precision! ## Quick Answers - **What is this?** Casio Fx-991Ex Engineering/Scientific Calculator - Black by casio - **How much does it cost?** € 1.28 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/253343244-casio-fx-991ex-engineering-scientific-calculator-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 - • **Visualize with Ease:** Generate QR codes for instant graphical data representation. - • **Perfect for All Levels:** Designed for middle and high school students, ideal for advanced studies. - • **User-Friendly Interface:** Navigate effortlessly with a high-resolution LCD screen for enhanced visibility. - • **Elevate Your Calculations:** Experience lightning-fast computation with advanced mathematical functions. - • **Comprehensive Functionality:** Master integration, differential calculus, and more with a single device. ## Overview The Casio Fx-991Ex is a high-performance scientific calculator featuring a high-resolution display, super-fast calculation speed, and advanced mathematical functions, making it perfect for students and professionals alike. With capabilities for QR code graphing and a comprehensive set of calculations, it’s designed to meet the needs of both basic and advanced users. ## Description From the manufacturer Features Intuitive, easy-to-learn icon display The use of icons on the menu screen improves viewability. Selection of the desired function is quick and easy. Natural Textbook Display Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbols just as they appear in textbooks. List display function for thorough, speedy learning Variables and statistical calculation results stored in memory can be displayed in lists. There’s no need to recall and confirm individual values as with previous models. Easy-to-understand English messages and interactive format Nearly all English words are displayed on the screen in unabbreviated form. Interactive menu display realizes more intuitive operation. High computational competence for performing even advanced mathematics Online Visualization Service Using QR Code A comprehensive set of advanced functions unique to CASIO scientific calculators Spreadsheet calculations Matrix calculations Vector calculations Multiline display Integration calculations Differential calculations Equation calculations Inequality calculations Advanced statistical distribution calculations Ratio calculations Metric conversions Scientific constants Variables list Statistics list Digit separator Engineering symbols Review: this little wonder has made math feel like a walk in the park! - It's like having a math wizard in your pocket, ready to assist you at any moment. The buttons are perfectly arranged and labeled, making it a breeze to navigate through functions and operations. No more fumbling around or getting lost in an ocean of confusing symbols - this calculator keeps it simple and straightforward. It's like having a superhero cape draped over your shoulders, boosting your confidence and turning you into a mathematics virtuoso. Durability-wise, this calculator is a beast. Made with sturdy materials, it can endure accidental drops, backpack jostling, and even the occasional pencil poke without breaking a sweat. It's a trusty companion that will see you through math classes, exams, and countless problem-solving adventures. Review: very decent calculator, and it'll last! - this calculator is pretty great, this thing is gonna last a long time and its functions are very much useful especially for engineering ! ## Features - A New High-Performance Scientific With High Resolution Display Increasing The Amount Of Information Displayed And Super-Fast Calculation Speed For Performing The Most Advanced Mathematics - It’S New High Resolution Lcd Screen Allows More Information For Applications Like Spreadsheets And 4X4 Matrix Calculations. - Need Graphical Representation For Data Generated By The Fx-991Ex - No Problem! Generate A Qr Code For Your Problem, Scan The Code And Immediately See A Graphical Representation Of Your Data. - This calculator has a comprehensive set of advanced calculations for integration and differential calculus, along with vector and inequality calculations. - For the middle and high school grades, we’ve incorporated basic spreadsheet functionality, ratio and statistical functionality, down to ratio calculation and prime factorization. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B011UK5DGY | | Best Sellers Rank | #24,986 in Office Products ( See Top 100 in Office Products ) #64 in Scientific Calculators | | Brand | Casio | | Calculator Type | Engineering/Scientific | | Color | Black | | Colour | Black | | Compatible Devices | Devices with QR code readers, like smartphones and tablets | | Customer Reviews | 4.6 out of 5 stars 15,210 Reviews | | Display Type | LCD | | Enclosure Material | Plastic | | Item Dimensions L x W | 16.6L x 7.7W centimeters | | Item Type Name | Casio FX-991EX Engineering / Scientific Calculator, Black | | Item Weight | 200 Grams | | Manufacturer | Casio | | Mfr Part Number | FX-991EX | | Model Name | Fx-991ex | | Model Number | FX-991EX | | Model name | Fx-991ex | | Number of Batteries | 1 LR44 batteries required. | | Number of batteries | 1 LR44 batteries required. | | Power Source | Battery Powered | | Power source | Battery Powered | | Warranty Description | 1 year manufacturer warranty | ## Product Details - **Brand:** Casio - **Colour:** Black - **Calculator Type:** Engineering/Scientific - **Power source:** Battery Powered - **Number of batteries:** 1 LR44 batteries required. ## Images ![Casio Fx-991Ex Engineering/Scientific Calculator - Black - Image 1](https://m.media-amazon.com/images/I/616ryRoQ5EL.jpg) ![Casio Fx-991Ex Engineering/Scientific Calculator - Black - Image 2](https://m.media-amazon.com/images/I/71qzJyFuKdL.jpg) ![Casio Fx-991Ex Engineering/Scientific Calculator - Black - Image 3](https://m.media-amazon.com/images/I/61VaP+oUEmL.jpg) ![Casio Fx-991Ex Engineering/Scientific Calculator - Black - Image 4](https://m.media-amazon.com/images/I/61GgfWl3WLL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: هل هو شامل الغطاء** A: نعم **Q: Is this non-programable?** A: It’s not programmable. **Q: How many modes does it have?** A: 552 functions **Q: Is this the UK version Classwiz?** A: This is Thailand version. ## Customer Reviews ### ⭐⭐⭐⭐⭐ this little wonder has made math feel like a walk in the park! *by K***Y on 28 March 2024* It's like having a math wizard in your pocket, ready to assist you at any moment. The buttons are perfectly arranged and labeled, making it a breeze to navigate through functions and operations. No more fumbling around or getting lost in an ocean of confusing symbols - this calculator keeps it simple and straightforward. It's like having a superhero cape draped over your shoulders, boosting your confidence and turning you into a mathematics virtuoso. Durability-wise, this calculator is a beast. Made with sturdy materials, it can endure accidental drops, backpack jostling, and even the occasional pencil poke without breaking a sweat. It's a trusty companion that will see you through math classes, exams, and countless problem-solving adventures. ### ⭐⭐⭐⭐⭐ very decent calculator, and it'll last! *by A***I on 17 April 2024* this calculator is pretty great, this thing is gonna last a long time and its functions are very much useful especially for engineering ! ### ⭐⭐⭐⭐ Works well *by A***I on 7 May 2022* Decent quality --- ## 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.pt/products/253343244-casio-fx-991ex-engineering-scientific-calculator-black](https://www.desertcart.pt/products/253343244-casio-fx-991ex-engineering-scientific-calculator-black) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-07-12*