How to use Speed Converter
Speed combines distance with time. This converter normalises both components through metres per second. A knot uses the international nautical mile of 1852 metres, not an ordinary land mile.
The result converts the number you enter and does not estimate a trip duration, average speed in traffic or a safe travel speed. Use consistent average speed if applying it to a distance-and-time calculation.
The formula
Result = speed × source-unit m/s / target-unit m/s
1 km/h = 1 / 3.6 m/s
1 knot = 1 nautical mile per hour
A worked example
Value to convert: 60 · From: Kilometres per hour · To: Metres per second
Converted value: 16.66666667 Metres per second
Knots use the international nautical mile.
Questions about this calculation
Is a knot the same as a mile per hour?
No. A knot is a nautical mile per hour; an ordinary mile is shorter.
How do I convert km/h to m/s?
Divide the km/h value by 3.6.
Formula checks: 2026-10-08. Assumptions & corrections.