---
product_id: 727662253
title: "CASIO FX-991CW Advanced Scientific Calculator, Black, S"
brand: "casio"
price: "B/.117"
currency: PAB
in_stock: true
reviews_count: 9
category: "Casio(カシオ)"
url: https://www.desertcart.com.pa/products/727662253-casio-fx-991cw-advanced-scientific-calculator-black-s
store_origin: PA
region: Panama
---

# 4x4 matrix & spreadsheet display Solar powered + battery backup 552 advanced functions CASIO FX-991CW Advanced Scientific Calculator, Black, S

**Brand:** casio
**Price:** B/.117
**Availability:** ✅ In Stock

## Summary

> 🧠 Elevate your calculations — because your math deserves a power move.

## Quick Answers

- **What is this?** CASIO FX-991CW Advanced Scientific Calculator, Black, S by casio
- **How much does it cost?** B/.117 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/727662253-casio-fx-991cw-advanced-scientific-calculator-black-s)

## 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

- • **Power That Never Quits:** Solar-powered with LR44 battery backup ensures uninterrupted performance during crunch time.
- • **Intuitive Navigation & Typing:** Rounded keys and cursor control make inputting complex equations smooth and error-free.
- • **Ultra-Fast, High-Resolution LCD:** Experience lightning-speed calculations with a 2.25-inch screen that handles complex data like spreadsheets and matrices.
- • **Crystal-Clear Natural Textbook Display:** See formulas and symbols exactly as in your textbooks for effortless comprehension.
- • **Seamless Integration with ClassPad.net:** Sync your work effortlessly for smarter study sessions and professional presentations.

## Overview

The CASIO FX-991CW is a cutting-edge scientific calculator featuring a high-resolution LCD capable of displaying spreadsheets and 4x4 matrices, 552 advanced functions including integration and differential calculations, and a natural textbook display for easy reading. Solar-powered with battery backup, it offers intuitive navigation and compatibility with ClassPad.net, making it ideal for middle school to college-level math and professional use.

## Description

High performance calculator with high resolution displays features ultra-fast calculation speeds for increased display amount of information and testing and executing the most advanced math. High resolution LCD screen provides detailed information such as spreadsheet and 4x4 matrix calculation. This calculator has a comprehensive set of advanced calculations for integration and differential calculations, along with vector and inequal calculations. For middle school, high school and college math courses

Review: いいよ
Review: Casio - Casio managed to update a classic without ruining it. The FX-991CW takes the reliable computational power of its predecessor and wraps it in a smooth, accessible, and high-tech shell. Absolutely highly recommended.

## Features

- High resolution display that can display more data such as spreadsheets and 4x4 matrix calculations
- NATURAL TEXTBOOK DISPLAY - Symbols and numbers are displayed just like textbooks
- Numerical Interior/Minute 552 functions
- Simultaneous Polynomial Solver
- Solar powered, battery backup (LR44 button battery included)
- Rounded keys make typing easier
- 4 tone display for easy operation
- Intuitive navigation by cursor key
- Works with ClassPad.net

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BSJ33C4R |
| Amazon Bestseller | #24,746 in Office Products ( See Top 100 in Office Products ) #20 in Scientific Calculators |
| Batteries Included | Yes |
| Batteries Required | Yes |
| Brand | Casio |
| Color Name | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,930) |
| Date First Available | June 23, 2023 |
| Display Size | 2.25 Inches |
| Display Type | LCD |
| Item Model Number | FX-991CW |
| Item Weight | 3.35 Ounces |
| Item model number | FX-991CW |
| Manufacturer | Casio |
| Material | Plastic |
| Product Dimensions | 7.7 x 16.21 x 1.07 cm; 94.97 g |
| Release date | March 1, 2023 |
| Size | 0.4 x 3 x 6.3 |

## Product Details

- **Brand:** Casio
- **Calculator Type:** Engineering/Scientific
- **Color:** Black
- **Power Source:** Solar Powered
- **Screen Size:** 2.25 Inches

## Images

![CASIO FX-991CW Advanced Scientific Calculator, Black, S - Image 1](https://m.media-amazon.com/images/I/61gxxLY81kL.jpg)
![CASIO FX-991CW Advanced Scientific Calculator, Black, S - Image 2](https://m.media-amazon.com/images/I/716Qoq3t58L.jpg)
![CASIO FX-991CW Advanced Scientific Calculator, Black, S - Image 3](https://m.media-amazon.com/images/I/716pBy9aujL.jpg)
![CASIO FX-991CW Advanced Scientific Calculator, Black, S - Image 4](https://m.media-amazon.com/images/I/71cDu3l48vL.jpg)
![CASIO FX-991CW Advanced Scientific Calculator, Black, S - Image 5](https://m.media-amazon.com/images/I/71cqAki4GuL.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

### ⭐⭐⭐⭐⭐ Review
*by A***ー on November 19, 2025*

いいよ

### ⭐⭐⭐⭐⭐ Casio
*by A***O on October 8, 2025*

Casio managed to update a classic without ruining it. The FX-991CW takes the reliable computational power of its predecessor and wraps it in a smooth, accessible, and high-tech shell. Absolutely highly recommended.

### ⭐⭐⭐⭐ Review
*by 目***き on February 23, 2024*

カシオの関数電卓CLASSWIZの最新機で日本版のfx-JP900CWのグローバル版ということらしい． 先代機のfx-991EX（fX-JP900-Nのグローバル版）は愛用しているが，持ち運び用とデスク常備用で使い分けようと思い購入． 結論として「関数電卓としては」少し残念な仕様変更になっている． デザインは主に記号入力ボタンの白印字とそれに対応したSIFTと組み合わせる「裏入力」表示のゴールドのツートーンがシンプルで，何を押せばいいのかが直感的によりわかりやすくなっているのがいい． logボタンの表裏は日本版と逆になっているようだ． これは好みや使い方の問題だろうが,個人的には「底を指定のlog」が表で，裏に自然対数や常用対数となっているこの海外版の仕様のほうが好みだ．（なぜって底が揃っていない計算の方が面倒だから電卓の出番が多い．） 速度や計算精度は概ね強化されているのも良い点．（シンプルな関数の定積分なら割と早い．カシオやHPの上位機種のグラフ電卓には流石に敵わないが．） 残念だと思う先代からの変更点はS⇔Dボタンが無くなったこと．計算結果の表示を分数や小数で切り替えるのがFORMATボタンから上下カーソルで選択式になって手間が増えたのが地味に不便．（10桁までの整数なら素因数分解ができるがそれはちょっと嬉しい．） また定積分がボタンで一発で呼び出せず操作盤のどこにも積分記号がないのが混乱する．（これはCATALOGからFunc Analysisを呼び出してさらにIntegrationを選択しなくてはならなくなった．） 性能は確かに強化されているが，おそらく多くのエンジニアにも他の理系の人にもUIは不便になったと思われる． ボタンが見やすくなったのは助かるが，UI周りの仕様で関数電卓を普通の電卓ユーザーのニーズに寄せなくてもいいと感じた． よく使う計算はすぐに操作は覚えられたが，その大半で先代機よりわずかに手間がかかる． 普段遣いは結局先代機になりそうだ．

## 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.

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-27*