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Casio FX-991ES vs Casio FX-991MS

    3.15 in
    0.48 in
    Casio FX-991ES Calculator
    Casio FX-991ES
      3.07 in
      0.5 in
      Casio FX-991MS Calculator
      Casio FX-991MS
      Available colors
      User rating
      158
      3.3 out of 5
      158 user ratings
      5 stars
      		25 %
      4 stars
      		15 %
      3 stars
      		32 %
      2 stars
      		18 %
      1 stars
      		6 %
      145
      3.5 out of 5
      145 user ratings
      5 stars
      		25 %
      4 stars
      		19 %
      3 stars
      		33 %
      2 stars
      		18 %
      1 stars
      		2 %

      Full Comparison

      Units:

      Technical details

      Casio FX-991ESCasio FX-991ES
      Casio FX-991MSCasio FX-991MS
      TypeScientific calculatorScientific calculator

      Design

      Casio FX-991ESCasio FX-991ES
      Casio FX-991MSCasio FX-991MS
      Colour of product
      • Silver
      • White
      		Grey
      Form factorPocketPocket

      Dimensions

      Casio FX-991ESCasio FX-991ES
      Casio FX-991MSCasio FX-991MS
      Width3.15 in3.07 in
      Height0.48 in0.5 in
      Depth6.34 in6.08 in
      Weight3.7 oz3.7 oz

      Display

      Casio FX-991ESCasio FX-991ES
      Casio FX-991MSCasio FX-991MS
      Number of characters per line1210
      Number of display lines22
      Display tiltingnono
      Second displaynono
      Display lightnono

      Features

      Casio FX-991ESCasio FX-991ES
      Casio FX-991MSCasio FX-991MS
      Complex functionsyesyes
      Statistical functionsyesyes

      Power

      Casio FX-991ESCasio FX-991ES
      Casio FX-991MSCasio FX-991MS
      Power source
      • Solar
      • Battery
      • Solar
      • Battery
      Battery operatedyesyes
      External power connectionSolar cellSolar cell

      Pros & Cons

      Pros
          Cons

              Casio FX-991ES vs Casio FX-991MS - User Opinions

              • yulanda
                over 1 year ago
                The Casio fx-991ES PLUS has better features as compared to the 991MS, but there is one downside: you cannot input and display engineering symbols (SI prefixes) like μ (micro), m (milli), K (kilo) etc. in the ES PLUS, but you can do so in the MS. Which is better Casio FX-82ms or Casio FX-82es?
              • britta
                over 1 year ago
                The Casio fx-991ES PLUS has better features as compared to the 991MS, but there is one downside: you cannot input and display engineering symbols (SI prefixes) like μ (micro), m (milli), K (kilo) etc. in the ES PLUS, but you can do so in the MS.
              • What's the difference between products? Share your opinion.

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