Comparison of software calculators

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This is a list of notable software calculators.

## Immediate execution calculators (button-oriented)

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Name  | Software license | OS Support  | Precision  | Scientific
mode  | RPN
mode  | Hex/oct/bin
mode

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DeskCalc | MIT | Haiku | Arbitrary decimal  | Yes  | No  | No
Mac OS calculator | Proprietary | macOS | Double (64 bit)  | Yes  | Yes  | Yes
GNOME Calculator | GPL-3.0-or-later | Linux, BSDs, macOS | Arbitrary decimal  | Yes  | Yes  | Yes
KCalc | GPL-2.0-or-later | Linux, BSDs, macOS | Arbitrary decimal  | Yes  | Yes  | Yes
Windows Calculator | MIT | Windows | ≥32 decimal  | Yes  | Yes  | Yes
WRPN Calculator | Public domain | Windows, Linux, macOS, Android | Float  | Yes  | Yes  | Yes
xcalc | X11 | Linux | Arbitrary decimal  | Yes  | Yes  | Yes

## Expression or formula calculators (command-line oriented)

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Name  | Software license | OS Support  | Precision  | Hex/oct/bin
mode  | RPN
mode  | Defining
variables  | Defining
functions  | Syntax
highlighting  | Unit conversion  | Multiple Steps

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Atari Calculator | Proprietary | Atari 800 | Float  | Yes  | Yes  | Yes  | Yes  | No  | Yes  | Yes
bc programming language | GNU General Public License | Unix | Variable  | Yes  | Un­known  | Yes  | No  | No  | No  | Un­known
kalker | MIT | Linux, BSDs, macOS, Windows | Variable  | Yes  | Un­known  | Yes  | Yes  | Yes  | Partial  | Un­known

## See also

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* Software calculator
* Calculator input methods
* Formula calculator
* Calculator
* Graphing calculator
* Scientific calculator