Qalculate!

Qalculate! 5.13.2

A highly versatile desktop calculator, with support for units, physical constants, uncertainty propagation, symbolic calculations, etc.

  • By Hanna Knutsson
  • Open Source
  • Updated Oct 10, 2026
Download for Windows

About 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).

What's new in 5.13.2

Qalculate! version 5.13.2 is primarily a recompilation of the Windows binaries to (hopefully) fix the issue with (false) flagging of qalculate-qt.exe as malware.
Changes:
- Switch from MSYS2 environment from UCRT64 to CLANG64 (and fix issues introduced by this change)
- Fix default abortion timer (60 s) in qalc on Windows
- Fix (partly) input of Unicode characters with calculate-as-you-type activated in qalc on Windows
- Avoid crash with factorial of integer > 50000000 on Windows
Download Windows binaries here:
64-bit installer
64-bit zip (unpack and run without further installation; no application data are read or written outside of the unpacked directory)
The binaries requires Windows 10 (1809) or later. They can also be installed using the Windows Package Manager (winget) or Chocolatey.
For more information visit the website at http://qalculate.github.io/.

Full release notes »

Technical details

PublisherHanna Knutsson
Version5.13.2
Release date2026-10-10
LicenseGPL-2.0
Installer typemsi
Architecturex64
Package IDQalculate.Qalculate

Links & install command

Install Qalculate! from the command line with Windows Package Manager (winget):

winget install --id=Qalculate.Qalculate -e

algebracalculatorcurrenciesengineeringmathphysicsunits

Older versions

  • 5.13.1
  • 5.12.0
  • 5.11.0
  • 5.10.0
  • 5.9.0
  • 5.8.2
  • 5.8.1
  • 5.8.0
  • 5.7.1