Speed & Pace Converter
Convert km/h, mph, m/s and knots, and turn a speed into running pace per km or mile.
Pace
🔒 Runs in your browser. Nothing you enter is uploaded or stored.
How to use it
Enter a speed and pick the units. Conversions use exact definitions: 1 mile = 1.609344 km and 1 knot = 1.852 km/h.
The pace section turns a speed in km/h into the time it takes to cover one kilometre or one mile, which is how runners usually describe speed.
FAQ
What is 100 km/h in mph?
About 62.14 mph.
What is a knot?
One nautical mile per hour, exactly 1.852 km/h. It is used at sea and in aviation.