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This is a list of notable software calculators.

Immediate execution calculators (button-oriented)

Name Software license OS Support Precision Scientific
mode
Hex/oct/bin
mode
DeskCalc MIT Haiku Arbitrary decimal Yes No
Mac OS calculator Proprietary macOS Double (64 bit) Yes Yes
Windows Calculator MIT Windows ≥32 decimal Yes Yes
KCalc GPL-2.0-or-later Linux, BSDs, macOS Arbitrary decimal Yes Yes
xcalc X11 Linux Arbitrary decimal Yes Yes
GNOME Calculator GPL-3.0-or-later Linux, BSDs, macOS Arbitrary decimal Yes Yes

Expression or formula calculators (command-line oriented)

Name Software license OS Support Precision Hex/oct/bin
mode
Defining
variables
Defining
functions
Syntax
highlighting
Unit conversion Multiple Steps
bc programming language GNU General Public License Unix Variable Yes Yes No No No
kalker MIT Linux, BSDs, macOS, Windows Variable Yes Yes Yes Yes Partial
AutoCalcs Free Web Variable No Yes No No Fully Automated or Manual Yes
Calcpad MIT Windows, Web Double No Yes Yes Yes Yes

See also