Speed Converter
Convert speed between miles per hour, kilometers per hour, meters per second and knots instantly.
All units at once
Beaufort wind scale reference
Source: UK Met Office Beaufort wind force scale · checked 2026-07-21. Boundaries are continuous conversions of the published knot limits.
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How to use
Enter a speed and pick the units to convert from and to. See all units at once, running pace, Beaufort wind force when in range, and export as CSV.
FAQ
Which units are supported?
Miles per hour (mph), kilometers per hour (km/h), meters per second (m/s) and knots.
How do I convert mph to km/h?
Multiply mph by 1.60934. This tool does it instantly in either direction.
What is a knot?
A knot is one nautical mile per hour, used in aviation and at sea — about 1.852 km/h.
What is the Beaufort scale?
It is a 0–12 empirical wind-force scale. This tool uses continuous boundaries normalized from the Met Office published knot limits, so decimal speeds cannot fall through gaps between rounded unit tables.
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