Speed Converter
Convert speed between km/h, mph, m/s, ft/s and knots.
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Results update as you type.
About this calculator
A speed converter changes a rate of travel between metric (m/s, km/h), imperial (mph, ft/s) and the knot used at sea and in aviation. All values pass through meters per second as the base unit.
Frequently asked questions
How do I convert km/h to mph?
Divide the km/h value by 1.609344, or multiply by about 0.621371. So 100 km/h is roughly 62.14 mph.
What is a knot?
A knot is one nautical mile per hour, about 1.852 km/h or 1.15 mph. It is the standard speed unit for ships and aircraft.
How fast is 60 mph in m/s?
One mph is 0.44704 m/s, so 60 mph is about 26.8 meters per second.
Results are estimates for general guidance only, not financial, medical or tax advice.