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Wind Speed Converter
Convert wind speed between mph, km/h, m/s, and knots.
Wind speed, any unit
Weather reports use km/h or mph, sailors use knots, and scientists use metres per second. This converter moves a wind speed between all four.
A brisk 20 knots is about 23 mph or 37 km/h. Enter a speed in any unit and read it off in the others, precisely.
Useful and private
The conversion runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
Which units are supported?
Miles per hour, kilometres per hour, metres per second, and knots — the units used in forecasts, sailing, and aviation.
What is a knot?
One nautical mile per hour, about 1.15 mph, standard in marine and aviation contexts.
Why convert wind speed?
Forecasts and instruments use different units, so a sailing report in knots may need converting to mph.
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