How to use this calculator
Enter any two of speed, distance and time, and the calculator will compute the third. Supports multiple units (mph, km/h, metres, miles, etc.).

Speed, Distance & Time

Speed, distance and time converter.

Use the formula: Speed = Distance ÷ Time. Enter any two values and calculate the third with full unit conversion support.

Calculate Distance

Unit Conversion Constants

1 mile

1609.344 metres

1 km

1000 metres

1 metre

3.28084 feet

1 hour

3600 seconds

1 m/s in mph

2.236936 mph

1 m/s in km/h

3.6 km/h

1 mph in m/s

0.44704 m/s

1 km/h in m/s

0.27778 m/s