Loading this page…
Loading this page…
Allow Google Analytics to measure page visits and basic device information using cookies? Your searches and form entries are excluded. You can change this choice at any time. Privacy details.
Loading this page…
Calculators & Unit Conversion
Platform information checked 2026-10-14.
Official app downloads and supported devicesCalculate with units, variables and mathematical expressions in a free desktop calculator.
Qalculate! is GPL-2.0 software, with free desktop and command-line editions. The GTK interface is linked here. Use the provider packages for your operating system; macOS uses the documented package/source options. It can replace calculation and unit-conversion tasks, not WolframAlpha's entire knowledge service or paid step-by-step tutor. Optional plotting needs Gnuplot; online exchange-rate updates contact external services.
Check official pricing
Calculate with units, variables and mathematical expressions in a free desktop calculator. Visit the project website to check the currently available deployment options.
Steps reviewed against provider documentation, not a claim of installation or execution testing. Qalculate! is GPL-2.0 software, with free desktop and command-line editions. The GTK interface is linked here. Use the provider packages for your operating system; macOS uses the documented package/source options. It can replace calculation and unit-conversion tasks, not WolframAlpha's entire knowledge service or paid step-by-step tutor. Optional plotting needs Gnuplot; online exchange-rate updates contact external services.
Technologies recorded in the catalog snapshot.