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Compare 3 products

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Casio FX-991ES Plus Calculator
Casio FX-991ES Plus
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Casio FX-991EX Calculator
Casio FX-991EX
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Casio FX-991MS Calculator
Casio FX-991MS
Available colors
User rating
298
3.4 out of 5
298 user ratings
5 stars
22 %
4 stars
19 %
3 stars
36 %
2 stars
16 %
1 stars
5 %
318
3.3 out of 5
318 user ratings
5 stars
20 %
4 stars
18 %
3 stars
42 %
2 stars
12 %
1 stars
5 %
145
3.5 out of 5
145 user ratings
5 stars
25 %
4 stars
19 %
3 stars
33 %
2 stars
18 %
1 stars
2 %

Technical details

TypeScientific calculatorScientific calculatorScientific calculator

Design

Colour of product
  • Grey
  • Violet,White
  • Black
  • Black,White
Grey
Control typeButtonsButtons
N/A
Form factorPocketPocketPocket
Digit comma separatoryesyes
N/A
Covernonoyes
Housing material
N/A
N/A
Plastic

Dimensions

Width3.15 in3.03 in3.07 in
Height0.44 in0.44 in0.5 in
Depth6.38 in6.52 in6.08 in
Weight3.35 oz3.17 oz3.7 oz

Display

Number of characters per line151610
Number of display lines422
Display typeDot-matrixLCD
N/A
Display tiltingyesnono
Second displaynonono
Display lightnonono

Features

CASyes
N/A
N/A
Complex functionsyesyesyes
Equation solveryesyes
N/A
Matricesyesyes
N/A
Statistical functionsyesyesyes
Economic functions
N/A
yes
N/A

Power

Power source
  • Solar
  • Battery
  • Solar
  • Battery
  • Solar
  • Battery
Battery operatedyesyesyes
Battery typeLR44LR44
N/A
Auto power offyes
N/A
N/A
Number of batteries required11
N/A
External power connection
  • Solar cell
  • USB
  • External source
  • Solar cell
  • External source
Solar cell

Often compared with Casio FX-991ES Plus

Often compared with Casio FX-991EX

Often compared with Casio FX-991MS