Casio fx-991CW Advanced Scientific Calculator : �鶹��.ca: Office Products

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Casio fx-991CW Advanced Scientific Calculator

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Brand	Casio
Colour	Black
Calculator Type	Engineering/Scientific
Power source	Battery Powered
Screen size	2.25 Inches

About this item

High resolution Natural textbook display with variable contrast to aid cursor input location
Numerical Differentiation/ Integration
Matrix 4x4 /Vector calculations/ Complex numbers
Two variable Statistical regression and visualization with QR code
QR code to verify authenic CASIO

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This item: Casio fx-991CW Advanced Scientific Calculator

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Casio FX-991ESPLUS2 with Authenticity verification (FX-991ESPLSC2-S-CT)

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Casio FX-300ESPLUS2 with Authenticity verification (FX-300ESPLS2-S-CT)

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Technical Details

Brand	‎Casio
Manufacturer	‎CASIO Computer Inc.
Model	‎FX-991CW
Model Name	‎FX-991CW
Part Number	‎FX-991EX
Number of Items	‎1
Standing screen display size	‎2.25 Inches
Display type	‎LCD
Power source type	‎Battery Powered
Batteries included	‎Yes
Batteries Required	‎Yes
Battery Cell Composition	‎Silver Oxide
Material Type	‎Plastic
Does it contain liquid?	‎No
Includes rechargable battery	‎Yes
Manufacturer	‎CASIO Computer Inc.
Item model number	‎FX-991CW
Product Dimensions	‎16 x 7.62 x 0.25 cm; 94.97 g
ASIN	‎B0BSJ33C4R

Additional Information

Batteries	1 LR44 batteries required. (included)
Date First Available	Jan. 19 2023
Customer Reviews	1,374 ratings 4.5 out of 5 stars
�鶹�� Rank	#2,127 in Electronics (See Top 100 in Electronics) #9 in Scientific Calculators

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Casio FX-991ESPLUS2 with Authenticity verification (FX-991ESPLSC2-S-CT)
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Casio FX-300ESPLUS2 with Authenticity verification (FX-300ESPLS2-S-CT)
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Product description

Casio��s new High-performance scientific calculator is perfect for high-stakes testing and performing the most advanced mathematics. Access to functions, memory, catalogue and tools is fast and intuitive. Recommended for students studying science, math and engineering courses at the college/ university level. Natural textbook display shows formula and results exactly as they appear in the textbook on a high contrast easy to read display with variable contrast to identify cursor location. Includes templates for calculus integration / differential. Functions include, fractions, complex number, 2-variable statistics, 8 regression types, Base-n, Logarithms with definable base, direct engineering calculations with different base unit, polynomial and simultaneous equation calculations, Matrix 4x4/Vector calculations, Table mode permitting f(x) & g(x) advanced calculus functions and association, SOLVE function and ratios. Only non-graphing calculator with spreadsheet. QR code and smart phone link visualization eg statistics.

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	This Item Casio fx-991CW Advanced Scientific Calculator	Recommendations Victor 940 Advanced Scientific Calculator	? Casio FX-991ES Plus-2 Scientific Calculator	? Casio fx-115ESPLS2 White Advanced Scientific Calculator with Natural Display	? Casio FX-350ES Plus Scientific Calculator	? Casio FX300MSPLUS2 Engineering/Scientific Calculator
	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment
Price	-11%?$31.05 List:?$34.99	$17.59	-6%?$38.20 Was:?$40.58	$30.99	$47.05	$13.48
Delivery	��	��	Get it by Friday, Jun 27	��	Get it Jul 14 - 24	��
Customer ratings	4.51,374	4.120	4.7262	4.76,335	4.3374	4.71,505
Sold by	�鶹��.ca	�鶹��.ca	DREAM FIELD Z	�鶹��.ca	Fastmedia ship USA	�鶹��.ca
model name	FX-991CW	940	FX 991ES	FX-115ESPLS2	FX 350ES	FX-300MSPLUS2
power source	Battery Powered	Solar/Battery	Battery Powered	Battery Powered	Solar Powered	battery
battery quantity	1 lr44, 1 unknown	1 lr44, 1 product specific	1 lithium ion	1 lr44	1 aa	1 lr44
display type	LCD	LCD	LCD	LCD	LCD	LCD
material	Plastic	Plastic	Plastic	Plastic	Plastic	Plastic

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Customer reviews

1,374 global ratings

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Customers say

Customers like the functionality, readability, and screen size of the calculator. They mention it has many functions as advertised, is lightweight, and easy to use. However, some customers have mixed opinions on its usability.

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Functionality Readability Screen size Weight Usability

18 customers mention "Functionality"18 positive0 negative

Customers like the functionality of the calculator. They mention it's a perfect scientific calculator for high school and university. They also say it has many operations performed much faster.

"Good calculator." Read more

"...After learning the new shortcuts, the calculator is great...." Read more

"Great scientific calculator for high school all the way to university." Read more

"...Also there are many operations that are performed much faster on this one making up for the few more key presses you may have to do as compared to..." Read more

3 customers mention "Readability"3 positive0 negative

Customers like the readability of the calculator. They mention the screen is a good size and can easily be read even at a small distance.

"...It shows equations, fractions, and decimals. It's clear and easy to read. You can have spreadsheets and data tables...." Read more

"...Most of all it has an Undo button. The font seems a lot more readable than its predecessor also. Though that is subjective." Read more

"...The screen is a good size and can easily be read even at a small distance...." Read more

3 customers mention "Screen size"3 positive0 negative

Customers like the screen size of the calculator. They mention it's a good size and can easily be read even at a small distance.

"...The screen is a nice size. It shows equations, fractions, and decimals. It's clear and easy to read...." Read more

"...It can literally do almost everything! It��s thin, small, and easy to use! A dream for everyone who loves math!..." Read more

3 customers mention "Weight"3 positive0 negative

Customers like the weight of the product. They mention it's lightweight and can literally do almost every thin thing.

"The new Casio FX 991 CW looks cleaner and feels lighter, but it does require more keystrokes that the previous FX 991 EX, Sharp EL-W506T, or TI..." Read more

"Very light weight. Not like it��s antecessors. Technically improved." Read more

11 customers mention "Usability"6 positive5 negative

Customers have mixed opinions about the usability of the calculator. Some mention it's easy to use, while others say the controls could be more intuitive.

"...But, it 10 minutes, with the help of the 150 page PDF, it was easy enough to figure out how to do some of the basic algebra and trigonometry..." Read more

"...Controls could be more intuitive though." Read more

"...calculators that you go between, then this one is much more easier to get used to...." Read more

"Calculator is ok. But Casio didn't keep with better UI of the previous fx-991ex, hiding several functions behind menus...." Read more

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Top reviews from Canada

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Riya
my goat calculator
Reviewed in Canada on May 10, 2025
Verified Purchase

it can factor !!

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Nicolas Jorge
Good
Reviewed in Canada on May 6, 2025
Verified Purchase
Good calculator.

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Ray
Need to Relearn Some Functions
Reviewed in Canada on January 24, 2025
Verified Purchase
I bought this Casio calculator as a back. I usually use a Casio fx-991es and since I'm use to that configuration on that calculator, it was a bit of a learning curve for this one, for example, to represent fractions as decimals, rather than pressing S to D on the fx-991es, you have to click format and then select decimal from a list of options. After learning the new shortcuts, the calculator is great. It has a graphing option that allows you to create a table of values and then generate a graph through a QR code. I like the older configuration of this calculator but with practice, I don't mind this one.

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Helpful

Luigi S
Who needs expensive TI when a Casio would do?
Reviewed in Canada on April 8, 2025
Verified Purchase
Great scientific calculator for high school all the way to university.

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Helpful

Danny H
A Perfect Calculator
Reviewed in Canada on December 18, 2023
Verified Purchase
I got this for my son in Grade 10. It has 500+ functions in total. Clearly he's not going to need all of them.

But, it 10 minutes, with the help of the 150 page PDF, it was easy enough to figure out how to do some of the basic algebra and trigonometry functions that he needs.

The screen is a nice size. It shows equations, fractions, and decimals. It's clear and easy to read.

You can have spreadsheets and data tables. We didn't get the calculator for all those features, but they're available.

It comes with a protective case that covers the screen and buttons. The cover, when removed, clips on the back so it's easy to store.

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4 people found this helpful

Helpful

twrks
This one is better, imo, than the 991EX.
Reviewed in Canada on August 30, 2023
Verified Purchase
Have the 991EX also, and yes it has some benefits if you are depending on muscle memory over a long period of time. But if you are a new user, or have multiple calculators that you go between, then this one is much more easier to get used to. Also there are many operations that are performed much faster on this one making up for the few more key presses you may have to do as compared to the 991EX. Most of all it has an Undo button. The font seems a lot more readable than its predecessor also. Though that is subjective.

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9 people found this helpful

Helpful

Kapish Limbachia
Works well
Reviewed in Canada on November 27, 2024
Verified Purchase
Easy to use

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Helpful

Amber123
Good for what it is
Reviewed in Canada on June 7, 2025
Verified Purchase
Works like advertised. The quality is decent. The screen resolution is perfect. There isn't much to complain about. The only thing is I wished they didn't oversimplify the interface. This makes it long to apply certain functions compared to the previous generation FX-991EX.

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Top reviews from other countries

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Reviewed in Japan on February 23, 2024
Verified Purchase

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Azxi
What I expected
Reviewed in the United Arab Emirates on February 9, 2025
Verified Purchase
I expected it to have an lcm feature but it��s alright.

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Hossam Adel
Perfect
Reviewed in the United States on June 20, 2025
Verified Purchase
Amazing Calculator, has a lot of functions suitable for engineering applications and very easy to use, the buttons are so cool and it looks amazing

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D
Brilliant
Reviewed in the United Kingdom on February 9, 2025
Verified Purchase
Good for A level Maths.

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Eduardo Vel��zquez
Buena calculadora
Reviewed in Mexico on May 30, 2025
Verified Purchase
Me sirve perfectamente para la ingenier��a, me ayuda a resolver matrices, vectores y ecuaciones de n orden, integrales, etc.
Bastante buena para una ingenier��a o preparatoria t��cnica.

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