About Unit Converter Tool

Unit Converter Tool is an independent, free unit conversion platform. It covers 785 units in 86 converters, from kitchen measures to magnetic permeability, plus number bases, currency and text case conversion.

What makes it different

  • One engine, everywhere. The same tested conversion engine generates every page and runs every calculation in your browser — there are no hand-typed answer tables.
  • Correct maths for awkward units. Temperature offsets, reciprocal units such as L/100 km and wavelength, and logarithmic decibel scales are handled with their real formulas.
  • Private by design. Conversions never leave your device. History and saved conversions are stored only in your browser.

Editorial team

Pages and guides are written and maintained by the Unit Converter Tool Editorial Team. Conversion factors are derived from the SI Brochure, NIST Special Publication 811 and the 1959 international yard and pound agreement; see how we ensure accuracy. Found something that looks wrong? Tell us and we will check it against the primary source.

Try “psi to bar”, “cups”, “binary” or “5 ft in cm”.