Unit Converter
Convert length, weight, temperature, area, volume and speed with two editable fields and a quick swap control.
Convert length, weight, temperature, area, volume and speed with two editable fields and a quick swap control.
Convert length, weight, temperature, area, volume and speed with two editable fields and a quick swap control.
Converted amount = original amount × conversion factor; temperature uses a scale offset as well.
1 inch = 2.54 cm exactly; 1 mile = 1.609344 km exactly; 25 °C = 77 °F.
US gallons and Imperial gallons differ; this converter labels US gallons explicitly.
Yes. Use Copy to copy the result or full example. Share creates a link that puts your chosen values into the URL fragment so another person can reproduce the calculation. Your named saves and recent history stay in your own browser.
Multiply inches by 2.54. For example, 10 inches is 25.4 cm. Both fields are editable: type in either one and the other updates.
Temperature scales have different zero points, so conversion needs an offset as well as a factor: °F = °C × 9/5 + 32 and K = °C + 273.15.
Length, weight, temperature, area, volume and speed, covering common metric and US customary units. Pick a category, then the units on each side.