---
product_id: 238594604
title: "Casio FX-991ES Plus-2nd Edition Scientific Calculator"
brand: "casio"
price: "€ 53.31"
currency: EUR
in_stock: true
reviews_count: 13
category: "Casio"
url: https://www.desertcart.it/products/238594604-casio-fx-991es-plus-2nd-edition-scientific-calculator
store_origin: IT
region: Italy
---

# Natural Textbook Display Dual power: Solar & Battery 417 functions packed Casio FX-991ES Plus-2nd Edition Scientific Calculator

**Brand:** casio
**Price:** € 53.31
**Availability:** ✅ In Stock

## Summary

> 🔢 Elevate your calculations—where precision meets style.

## Quick Answers

- **What is this?** Casio FX-991ES Plus-2nd Edition Scientific Calculator by casio
- **How much does it cost?** € 53.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/238594604-casio-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

- • **Master 417 Functions with Ease:** From calculus to statistics, unlock advanced scientific capabilities without the clutter.
- • **Color-Coded Keypad for Speed & Accuracy:** Quickly differentiate keys and breeze through complex calculations with style and precision.
- • **Dual Power for Uninterrupted Performance:** Solar-powered with battery backup ensures your calculator never lets you down during crunch time.
- • **Natural Textbook Display for Intuitive Use:** See formulas and expressions exactly as in your textbooks—no more guesswork.
- • **Sleek, Portable Design with Protective Case:** Lightweight and durable with a slide-on hard case—perfect for professionals on the move.

## Overview

The Casio FX-991ES Plus 2nd Edition is a premium scientific calculator featuring 417 functions, a Natural Textbook Display for clear, textbook-style input/output, and dual solar-battery power for reliability. Its color-coded keypad enhances usability, while the sleek design and included slide-on hard case make it an ideal companion for professionals and students seeking advanced, portable calculation tools.

## 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: 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.
Review: Great for Calculations but not for graphing - 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

## 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 | #11,229 in Office Products ( See Top 100 in Office Products ) #18 in Scientific Calculators |
| Customer Reviews | 4.7 4.7 out of 5 stars (14,174) |
| 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

![Casio 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

### ⭐⭐⭐⭐⭐ 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

### ⭐⭐⭐⭐⭐ Must buy calculator for STEM majors!
*by A***N on August 25, 2024*

If you’re looking into different calculators chances are you’re probably taking advance STEM classes and your teachers don’t allow graphing calculators or your SAT or ACT may not allow it. Well you’ve come to the right place because this calculator works wonders. I know it might sound odd at first but as someone who’s finishing up an Aerospace Engineering degree I can say that this calculator has come in clutch in more ways than one. Whether you’re solving advanced physics problems, math, or science related problems this calculator has an application. All the different modes that come in this calculator will be able to assist you in many ways. It’s easy to use and understand, simply playing will the calculator will show you just how powerful it is. It’s great quality and the value for the price of the calculator is very worth it.

## 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 Italy*
*Store origin: IT*
*Last updated: 2026-03-12*