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Converter NOW is a free, open-source unit converter for Android, Linux, Windows, macOS, and the web. It supports many measurement categories, custom units, favorites, and offline use without advertisements.
💡 Pick it when you need unit conversion combined with serious symbolic math and scientific calculations.
Qalculate! is a versatile calculator with a focus on easy-to-use interface and extensive mathematical functions.
💡 Pick it when you want natural-language queries and expert-level scientific context alongside conversions.
WolframAlpha is a computational knowledge engine that provides answers to factual queries by computing the answer from structured data.
Free basic version, Pro version available for a subscription fee
💡 Pick it if you use Apple devices and want a polished notepad calculator for everyday conversions.
Soulver is a notepad calculator app that allows you to perform calculations in a more human-readable format.
$29.99
💡 Pick it for precise command-line conversions, dimensional analysis, and scripting instead of a visual app.
GNU Units is a unit conversion software that provides interactive unit conversion. It understands and can handle multiplicative scale changes mixed with...
💡 Pick it when you want a free desktop GUI with custom and compound unit definitions.
ConvertAll is a unit conversion software that allows you to convert between different units of measurement.
Numbat contributors
💡 Pick it if you want a modern, scriptable calculator language with built-in dimensional units.
Numbat is a free, open-source scientific calculator language with first-class support for units and quantities. It targets programmers, scientists, and terminal users...
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