---
product_id: 238594604
title: "FX-991ES Plus-2nd Edition Scientific Calculator"
brand: "casio"
price: "$U2842"
currency: UYU
in_stock: true
reviews_count: 13
category: "Casio"
url: https://www.desertcart.uy/products/238594604-fx-991es-plus-2nd-edition-scientific-calculator
store_origin: UY
region: Uruguay
---

# Natural Textbook Display Dual solar & battery power 417 functions packed FX-991ES Plus-2nd Edition Scientific Calculator

**Brand:** casio
**Price:** $U2842
**Availability:** ✅ In Stock

## Summary

> 📊 Elevate your calculations—because precision is the new power move.

## Quick Answers

- **What is this?** FX-991ES Plus-2nd Edition Scientific Calculator by casio
- **How much does it cost?** $U2842 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/238594604-fx-991es-plus-2nd-edition-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

- • **Color-Coded Keypad:** Intuitive, stylish design that speeds up your workflow and reduces errors.
- • **Natural Textbook Display:** See formulas and expressions exactly as in textbooks—no more decoding required.
- • **Sleek, Portable & Protected:** Lightweight 95g design with a slide-on hard case for on-the-go professionals.
- • **Master 417 Functions with Ease:** From calculus to statistics, unlock advanced scientific power at your fingertips.
- • **Dual Power for Unstoppable Performance:** Solar and battery combo ensures your calculator never quits on you.

## Overview

The Casio FX-991ES Plus 2nd Edition is a premium scientific calculator featuring 417 functions, a Natural Textbook Display for easy reading, and dual solar/battery power for reliability. Its color-coded keypad and slide-on hard case combine style with practicality, making it an essential tool for students and professionals in science, engineering, and math.

## Description

417 functions, Display: Natural Textbook Display, LCD (dot-matrix), 10 + 2 decimal places, Power supply: Solar & Battery, Basic Mathematical Functions, Table Generation, Base-n calculation, Scientific Constants, Vector, Basic Statistics, Differentiation, Non Graphing, Matrix, Equation, Integration, Complex number calculation, Comes with new slide-on hard case, Size (H x W x D): 11.1 x 77.0 x 161.5 mm, Weight: 95g

Review: A Reliable and Powerful Scientific Calculator for Students and Professionals Alike! - The Casio FX-991ES Plus 2nd Edition is an excellent, reliable scientific calculator ideal for students and professionals. It features a Natural Textbook Display, 400+ functions, dual solar and battery power, and a durable, user-friendly design. Calculations are fast, accurate, and easy to follow, with helpful tools like the Multi-Replay function. Overall, it offers great performance, convenience, and value, making it highly recommended for anyone in science, math, or engineering. Its very easy to use and carry.
Review: surprisingly nice - UPDATE: I thought the U.S. version of this was the update to this model, the ClassWiz one with menus replacing some of the printed-on functions. That is indeed an update (but maybe to the EX versions rather than, or in addition to, ES versions? Because EX versions are discontinued). But actually the U.S. version of the 991ES is the Fx-115ES. I had thought that because of its lower number, it was just a lower-grade model. But in fact it is essentially the same as the 991ES with a few more capabilities and white instead of black. I like this calculator a lot so I wanted a "spare" plus it is nice to always have one of the two within easy reach, so I got the U.S. version as well. They are both similar high quality, just different colors. I am very pleased with these calculators. Previous review: I've used RPN HP calculators for years and didn't expect to enjoy or appreciate this non-RPN calculator as much as I do. The main reason I got it was that I found a couple of lovely calculator apps for Android that I figured out were supposed to mimic the 911 series Casio, and so I wanted the real thing. It has been easy and intuitive to figure out how to use. As someone else commented, this seems to be for Indian market so you probably won't have US warranty. But the US version is totally different; you have to access many of the functions through menus and they are not printed on/above the keys. But having them printed instead of having to access through menus is much more efficient once you learn where things are. The US menu version is maybe best for people who want to use the calculator briefly and/or don't want to bother learning it (like people used to a different brand). You might have to go to a non-US Casio site to find the pdf manual for the 991ES. It would have been nice to include a hard copy of the manual but these days that's rare, and I'm fine with this because it keeps prices down. US version is now ClassWiz which sadly replaced the 991 ES and 911 EX. So you have no choice but to get a non-US-market one if you want the ES or EX (but desertcart also sells a copy-cat version of the 911ES/EX from a different brand). As far as the hardware: The calculator has a nice look and feel. The plastic is premium and nice. The upper (smaller) keys feel nicer to me, especially as a (classic) HP user. The bottom (bigger) keys are a bit squishy but that's normal for most calculators. I like that there are no soft rubber keys or other soft parts (because soft plastics often get old and sticky and gross). The case goes on and off smoothly and does not scratch the calculator. I am glad I got this calculator and I'm sad that Casio is switching to a simplified look, menu-driven, version at least for the U.S. market.

## Features

- Redesigned ES PLUS series calculators featuring easy-to-understand Natural Textbook Display, Non-Programmable Scientific Calculator with 417 Functions
- Stylish design but same function as Casio FX-991ESPLUS 1st edition, 10-digit mantissa + 2-digit exponential display
- Basic Trigonometrical & Statistics Functions, and many more functions
- Colour coded keypad for easy key differentiation, Simple and easy to use, Comes with new slide on hard case

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0846D5CBP |
| Batteries | 1 LR44 batteries required. (included) |
| Best Sellers Rank | #10,559 in Office Products ( See Top 100 in Office Products ) #18 in Scientific Calculators |
| Customer Reviews | 4.8 4.8 out of 5 stars (14,022) |
| Date First Available | February 17, 2020 |
| Item Weight | 3.35 ounces |
| Item model number | FX-991ES PLUS 2ND EDITION |
| Language | English |
| Manufacturer | CASIO |
| Product Dimensions | 6.38 x 3.03 x 0.43 inches |

## Product Details

- **Brand:** Casio
- **Calculator Type:** Engineering/Scientific, Graphing
- **Color:** Black
- **Power Source:** Battery Powered
- **Screen Size:** 4 Inches

## Images

![FX-991ES Plus-2nd Edition Scientific Calculator - Image 1](https://m.media-amazon.com/images/I/61IujYL0JTL.jpg)

## Questions & Answers

**Q: Can this do mm to inch**
A: yes

**Q: Cual es la razon para invertir 35 dolares en tu fx-991es, si la calculadora fx-991ex vale apenas 20 dolares y tiene 135 funciones mas ?**
A: Me gustó más su diseño, la utilizo como calculadora de bolsillo no programable únicamente , (utilizo una programable para ingeniería). el precio estaba en oferta cuando la compré, me costó casi lo mismo y me gustó más.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A Reliable and Powerful Scientific Calculator for Students and Professionals Alike!
*by D***A on November 13, 2025*

The Casio FX-991ES Plus 2nd Edition is an excellent, reliable scientific calculator ideal for students and professionals. It features a Natural Textbook Display, 400+ functions, dual solar and battery power, and a durable, user-friendly design. Calculations are fast, accurate, and easy to follow, with helpful tools like the Multi-Replay function. Overall, it offers great performance, convenience, and value, making it highly recommended for anyone in science, math, or engineering. Its very easy to use and carry.

### ⭐⭐⭐⭐⭐ surprisingly nice
*by S***9 on March 15, 2024*

UPDATE: I thought the U.S. version of this was the update to this model, the ClassWiz one with menus replacing some of the printed-on functions. That is indeed an update (but maybe to the EX versions rather than, or in addition to, ES versions? Because EX versions are discontinued). But actually the U.S. version of the 991ES is the Fx-115ES. I had thought that because of its lower number, it was just a lower-grade model. But in fact it is essentially the same as the 991ES with a few more capabilities and white instead of black. I like this calculator a lot so I wanted a "spare" plus it is nice to always have one of the two within easy reach, so I got the U.S. version as well. They are both similar high quality, just different colors. I am very pleased with these calculators. Previous review: I've used RPN HP calculators for years and didn't expect to enjoy or appreciate this non-RPN calculator as much as I do. The main reason I got it was that I found a couple of lovely calculator apps for Android that I figured out were supposed to mimic the 911 series Casio, and so I wanted the real thing. It has been easy and intuitive to figure out how to use. As someone else commented, this seems to be for Indian market so you probably won't have US warranty. But the US version is totally different; you have to access many of the functions through menus and they are not printed on/above the keys. But having them printed instead of having to access through menus is much more efficient once you learn where things are. The US menu version is maybe best for people who want to use the calculator briefly and/or don't want to bother learning it (like people used to a different brand). You might have to go to a non-US Casio site to find the pdf manual for the 991ES. It would have been nice to include a hard copy of the manual but these days that's rare, and I'm fine with this because it keeps prices down. US version is now ClassWiz which sadly replaced the 991 ES and 911 EX. So you have no choice but to get a non-US-market one if you want the ES or EX (but Amazon also sells a copy-cat version of the 911ES/EX from a different brand). As far as the hardware: The calculator has a nice look and feel. The plastic is premium and nice. The upper (smaller) keys feel nicer to me, especially as a (classic) HP user. The bottom (bigger) keys are a bit squishy but that's normal for most calculators. I like that there are no soft rubber keys or other soft parts (because soft plastics often get old and sticky and gross). The case goes on and off smoothly and does not scratch the calculator. I am glad I got this calculator and I'm sad that Casio is switching to a simplified look, menu-driven, version at least for the U.S. market.

### ⭐⭐⭐⭐⭐ Great for Calculations but not for graphing
*by M***M on October 14, 2025*

Amazing item. Quality is good. Highly recommended if you want to do calculations. It’s very good with the numbering. I am an engineering student. Everything is working fine for me. Remember, not for graphing. If you are looking to graph, this is not the product. Otherwise amazing. Highly recommended. And very easy to use

## Frequently Bought Together

- Casio FX-991ES Plus-2nd Edition Scientific Calculator
- Casio fx-115ES Plus 2nd Edition – Advanced Scientific Calculator | 280+ Functions, Natural Textbook Display℠ | Ideal for Math, Science, Engineering & Statistics
- Texas Instruments TI-36X Pro Engineering/Scientific Calculator | 9.7 Inch | Black.

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-20*