Speed Distance Time Calculator
Enter any two values to calculate the third — with unit conversion.
Result
50 km/h
Speed, distance, and time formula
The three variables are related by speed = distance ÷ time. Rearranging: distance = speed × time, and time = distance ÷ speed. This calculator handles unit conversions automatically — mix km/h with miles, or m/s with hours.
For pace calculations (running, cycling), try the Pace Calculator. For fuel economy, see Fuel Economy Calculator. For unit conversion generally, use the Unit Converter.
Private & free — this tool runs entirely in your browser.
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