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Best Casio 991exes of 2026
Best Choice
1
CasioCasio FX-991DE X (German)
9.7
Exceptional
Our Rating
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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Value for Money
2
CasioCasio fx-991CW Advanced Scientific Calculator (UK Version)
28% Off
9.4
Excellent
Our Rating
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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3
KBIBCKKBIBCK FX-991EX Scientific Calculator, 552 Functions Engineering Calculator Scientific with 10+2 Screen Displays, Portable Calculators for School Office Business Home Daily Use (Black)
11% Off
9.3
Excellent
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
4
CasioCasio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural
23% Off
9.1
Excellent
Our Rating
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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5
KEGOZFX-991EX Scientific Calculator with 552 Functions, Advanced Scientific Calculator with 10+2 Screen Displays for Students, School, Office, Business Home Daily Use (Black)
8.9
Very Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
6
DakexiongDakexiong FX-991EX Scientific Calculator Multi-Function Calculator Scientific, 552 Functions, 10+2 Screen Displays - Ideal for Students and Teachers, Office, Black
8.8
Very Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
7
CLIUNTCLIUNT FX-991EX Scientific Calculator, 552 Functions Engineering Scientific Calculator, 10+2 LCD Digits Written Display Math Calculators for School Students, Business, Office
8.7
Very Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
8
PeixiongPeixiong FX991-EX Battery & Solar Powered Scientific Calculator with 4.4 Inches LCD Pad, FX-991EX Advanced Engineering/Scientific Calculator-552 Function with Notepad for School, Office (Black)
8.5
Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
9
KBIBCKKBIBCK FX-991EX Scientific Calculator, 552 Functions Engineering Scientific Calculator with 10+2 Screen Displays, Portable Calculators for Students, Teachers, Office, Business (Pink)
8.4
Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
10
OSALOOSALO Scientific Calculator 552 Functions 4 Line Written Display Solar and Battery for School College Math Engineering Calculators Black (OS-991EX CW)
8.3
Good
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
