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The Casio FX-991CW is a cutting-edge scientific calculator featuring over 540 functions, a high-resolution natural textbook display, and QR code integration for seamless PC connectivity. Designed for secondary education and beyond, it supports complex equation solving, matrix calculations, and advanced statistical analysis, all powered by solar energy in a sleek, lightweight design.
| ASIN | B0C4YNQMFF |
| Best Sellers Rank | #164 in Office Products ( See Top 100 in Office Products ) #9 in Scientific Calculators |
| Brand | Casio |
| Calculator Type | Engineering/Scientific |
| Color | gray |
| Compatible Devices | Computers, laptops, smartphones |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,298) |
| Display Type | LCD |
| Enclosure Material | Plastic |
| Item Dimensions L x W | 16.2L x 7.7W centimeters |
| Item Weight | 95 Grams |
| Manufacturer | CASIO |
| Mfr Part Number | FX-991CW-W-ET-V |
| 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 | 6.35 Centimeters |
| Unit Count | 1.0 Count |
F**H
Good
Very helpful and reliable for academics
A**R
Excellent!
Excellent!
M**L
Opción confiable y de alta calidad
La calculadora científica Casio FX-991CW es una herramienta imprescindible para cualquier estudiante o profesional que requiera cálculos matemáticos avanzados. Con 540 funciones y una pantalla natural, ofrece una experiencia de cálculo intuitiva y eficiente. Lo que más destaca de esta calculadora es su capacidad para mostrar expresiones matemáticas tal como aparecen en los libros de texto, lo que facilita la comprensión y la resolución de problemas. Además, su diseño compacto y portátil la hace ideal para llevar a cualquier lugar. Con funciones avanzadas como cálculos estadísticos, trigonométricos y de fracciones, esta calculadora es versátil y puede adaptarse a una amplia gama de necesidades matemáticas. Además, su calidad de construcción es excelente, lo que garantiza una larga vida útil.
E**R
Good
As stated working well
O**A
A must have for maths and science students!!
The Casio FX-991CW Scientific Calculator is absolutely brilliant for maths and science students. It’s fast, accurate, and packed with so many useful functions that make complex calculations much easier. The screen is very clear and easy to read, especially for fractions and equations, and the buttons feel comfortable and responsive. I also love the modern design and how lightweight it is to carry around for school or exams. Perfect for GCSE, A-Level, and university work. Excellent quality and definitely worth the money. Highly recommended!
N**A
Good
Just like pic
D**S
Fast and functional, medium build quality, good VFM.
Best exam-safe Casio calculator. This is the latest version (early 2026) of the 991 model, featuring the ClassWise (CW) interface, which is easier for secondary school students. Contains many useful features, such as variables. Plasticky in its construction, both case and keys. The screen is pretty OK. It comes with a cover, but not soft sleeve, or other case, but you can find such things in the market. Hybrid power via non-rechargeable lithium battery (which should be changed every two years) and light. Lack of programing, wired or wireless interfaces, CAS and data storage (except for a few numeric variables) make it exam-safe for most countries that allow calculators in exams. Otherwise, don't bother buying it, get a math app for a smartphone. Good VFM.
Trustpilot
3 days ago
1 month ago