Miles Per Hour to Kilometers Per Hour

One mile per hour equals 1.609344 kilometers per hour.

Kilometers Per Hour = miles per hour × 1.609344

Speed Conversion

From

Common Speeds

Speed Reference Guide

Common Speed Units

Meters per Second (m/s): SI base unit for speed

Kilometers per Hour (km/h): Common metric unit

Miles per Hour (mph): Imperial unit used in US/UK

Feet per Second (ft/s): Imperial unit for technical use

Knots: Nautical speed (1 knot = 1 nautical mile/hour)

Mach: Speed relative to sound (343 m/s at sea level)

Speed Comparisons

Human walking: ~5 km/h (3.1 mph)

Bicycle: ~20 km/h (12.4 mph)

Car (city): ~50 km/h (31 mph)

Car (highway): ~120 km/h (75 mph)

Commercial jet: ~900 km/h (560 mph)

Sound: 1,235 km/h (767 mph)

Miles Per Hour to Kilometers Per Hour Conversion Table

mph	km/h
10	16.0934
20	32.1869
25	40.2336
30	48.2803
35	56.327
40	64.3738
50	80.4672
55	88.5139
60	96.5606
65	104.6074
70	112.6541
75	120.7008
80	128.7475
100	160.9344
150	241.4016

About This Conversion

Miles per hour to kilometers per hour is needed for US and UK speed limits, vehicle specifications and weather reports on wind speed. Multiply by 1.609344.

Vehicle performance figures are the place this conversion is most often quoted. The 0 to 60 mph benchmark used in the US and UK is 0 to 96.6 km/h, while the metric world quotes 0 to 100 km/h, a slightly harder target at 62.1 mph. Comparing the two figures directly makes a car look faster than it is.