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Mph to km/h Converter (Miles per Hour to Kilometers per Hour)

1 mile per hour = 1.609344 kilometers per hour. To convert mph to km/h, multiply by 1.609344.

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100 mph = 160.934 km/h

1 mph
1.6093 km/h
1 km/h
0.6214 mph
10 mph
16.0934 km/h
100 mph
160.9344 km/h

How to convert mph to km/h

1 mile per hour equals 1.609344 kilometers per hour, so the conversion is a single multiplication.

km/h = mph × 1.609344

Example: 150 mph × 1.609344 = 241.402 km/h.

About the mile per hour and the kilometer per hour

Mile per Hour (mph)

Miles per hour is the speed unit on US and UK road signs and speedometers.

Kilometer per Hour (km/h)

Kilometers per hour is the road speed unit in most countries. Divide by 3.6 to get meters per second.

1 mile per hour in every speed unit

Kilometers per Hour1.609 km/h
Meters per Second0.447 m/s
Knots0.869 kn
Feet per Second1.467 ft/s
Mach (sea Level)0.001314 Mach
km/h to mphReverse conversionKnots to mph1 kn = 1.1508 mphmph to Knots1 mph = 0.869 knm/s to km/h1 m/s = 3.6 km/hkm/h to m/s1 km/h = 0.2778 m/sKnots to km/h1 kn = 1.852 km/hkm/h to Knots1 km/h = 0.54 kn

mph to km/h FAQ

How many kilometers per hour are in a mile per hour?

1 mile per hour = 1.609344 kilometers per hour.

How many miles per hour are in a kilometer per hour?

1 kilometer per hour = 0.6213711922 miles per hour.

How do I convert mph to km/h?

Use km/h = mph × 1.609344. For example, 10 mph = 16.093 km/h.

Can I print this mph to km/h chart?

Yes. Use "Print / Save PDF" next to the converter for a one-page chart, or "Download CSV" to open it in Excel or Google Sheets.