Unit converter

Client

Pick Length, Temperature, or Weight, then enter one amount with a unit (for example 5 ft, 37 °C, or 16 oz). All math runs locally in your browser.

Length

?

Converts between metric and US customary length using standard factors (international inch = 0.0254 m, mile = 1,609.344 m). Paste a number with a unit, for example 5 ft, 2.54 cm, or 1 mi.

UnitValueCopy
µm1000000.00 µm
mm1000.00 mm
cm100.00000 cm
m1.0000000 m
km0.001 km
in39.37007874 in
ft3.280839895 ft
yd1.093613298 yd
mi0.0006213711922 mi

Common use cases

  • Convert blueprint or room dimensions between metric and US customary length in one paste.
  • Compare oven, weather, or lab temperatures across Celsius, Fahrenheit, and kelvin.
  • Translate recipe or shipping weights between grams, ounces, and pounds.

Common mistakes to avoid

  • Mixing up survey feet and international feet

    For most everyday use the difference is tiny. For legal or survey-grade work, confirm the exact definition your domain requires.

FAQ

Are values sent to Toolcore?

No. Conversions run in your browser from the values you enter.

More tools

Related utilities you can open in another tab—mostly client-side.