How do I convert km/h to mph?

Divide by 1.609344. For example, 100 km/h ≈ 62.14 mph.

A knot is one nautical mile per hour, exactly 1.852 km/h (≈1.151 mph). Knots are the standard unit for maritime and aviation speeds.

Speed Converter

Convert speed between kilometers per hour, miles per hour, meters per second, knots, and feet per second. Whether you're comparing speed limits abroad, reading wind speeds, or working through physics problems, the converter updates live and shows every unit at once.

Converters

Value

From

1 Meters per second = 3.6 Kilometers per hour

1 Meters per second (m/s) converted to all units
Unit	Value
Meters per second (m/s)	1
Kilometers per hour (km/h)	3.6
Miles per hour (mph)	2.236936292
Knots (kn)	1.943844492
Feet per second (ft/s)	3.280839895

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This tool runs entirely in your browser. Your data is never uploaded to a server.

How to use

3 clear steps.

Enter a speed value.
Choose the unit you have (e.g. km/h).
Choose the unit you need (e.g. mph) and read the converted speed.

Good to know

Frequently asked questions

How do I convert km/h to mph?: Divide by 1.609344. For example, 100 km/h ≈ 62.14 mph.
What is a knot?: A knot is one nautical mile per hour, exactly 1.852 km/h (≈1.151 mph). Knots are the standard unit for maritime and aviation speeds.