https://qalculate.github.io/

Qalculate!

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Qalculate!
- the ultimate desktop calculator
[qalculate-]
Qalculate! is a multi-purpose cross-platform desktop calculator. It
is simple to use but provides power and versatility normally reserved
for complicated math packages, as well as useful tools for everyday
needs (such as currency conversion and percent calculation). Features
include a large library of customizable functions, unit calculations
and conversion, physical constants, symbolic calculations (including
integrals and equations), arbitrary precision, uncertainty
propagation, interval arithmetic, plotting, and a user-friendly
interface (GTK, Qt, and CLI).

Qalculate! is free software, licensed under the GNU Public License v2
(or later).

Download version 4.7.0


Latest News
2023-07-03
Qalculate! version 4.7 released
Changes:

  * Support for custom default angle unit, e.g. turn, arcsec, arcmin
  * Append default angle unit (instead of always radians) when
    converting value without unit to angle unit
  * More consistent addition and removal of angle unit from function
    arguments
  * Always interpret ./, .*, and .^ as entrywise operators if user
    intention is unclear
  * Change order of operations to place entrywise and ordinary
    operators on the same precedence level
  * Add function, kron(), for Kronecker product, and constants for
    Pauli matrices
  * Add radius to planets dataset and update other properties
  * Support replacement of unknown variables within variable values
  * Fix besselj(0, 0)
  * Fix incomplete calculation in tan() with try exact approximation
  * Fix 0/0=0 equality (do not return true) and output of 2/0 (and
    similar)
  * Fixes and improvements for newtonsolve() and secantsolve()
  * Fix segfault when MathStructure is deleted after Calculator, and
    in destructor of calculated DynamicVariable (called from
    Calculator destructor)
  * Do not save mode on exit if "-defaults" command line switch where
    used (CLI)
  * Allow multiple actions for keyboard shortcuts (GTK, Qt)
  * Add toggle precision, and min, max, or min and max decimals to
    available shortcut and button actions (GTK, Qt)
  * Add option to exclude units for unformatted ASCII copy (GTK, Qt)
  * Add optional value to copy result action, allowing expression
    copy and formatting selection (GTK, Qt)
  * Fix copy unformatted ASCII when local digit group separator is
    same as selected decimal separator (GTK, Qt)
  * Add option to automatically copy result (Qt)
  * Always set (primary) selection clipboard contents when whole
    expression is selected or selection is cleared, e.g. after
    calculation (Qt)
  * Improve support dark mode and high contrast modes, and change
    default style to Fusion, on Windows (Qt)
  * Minor bug fixes and feature enhancements

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