Convert Kilometers Per Hour to Miles Per Hour

Enter the speed in kilometers per hour below to get the value converted to miles per hour.

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1 km/h = 0.621371 mph

How to Convert Kilometers Per Hour to Miles Per Hour

conversion scale showing kilometers per hour and equivalent miles per hour speed values

To convert a kilometer per hour measurement to a mile per hour measurement, multiply the speed by the conversion ratio. One kilometer per hour is equal to 0.621371 miles per hour, so use this simple formula to convert:

miles per hour = kilometers per hour × 0.621371

The speed in miles per hour is equal to the kilometers per hour multiplied by 0.621371.

For example, here's how to convert 5 kilometers per hour to miles per hour using the formula above.
5 km/h = (5 × 0.621371) = 3.106856 mph

Kilometers per hour and miles per hour are both units used to measure speed. Keep reading to learn more about each unit of measure.

Kilometers Per Hour

Kilometers per hour are a measurement of speed expressing the distance travelled in kilometers in one hour.

The kilometer per hour, or kilometre per hour, is an SI unit of speed in the metric system. Kilometers per hour can be abbreviated as km/h, and are also sometimes abbreviated as kph. For example, 1 kilometer per hour can be written as 1 km/h or 1 kph.

Kilometers per hour can be expressed using the formula:
vkm/s = dkmthr

The velocity in kilometers per hour is equal to the distance in kilometers divided by time in hours.

Miles Per Hour

Miles per hour are a measurement of speed expressing the distance travelled in miles in one hour.

The mile per hour is a US customary and imperial unit of speed. Miles per hour can be abbreviated as mph, and are also sometimes abbreviated as mi/h or MPH. For example, 1 mile per hour can be written as 1 mph, 1 mi/h, or 1 MPH.

Miles per hour can be expressed using the formula:
vmph = dmithr

The velocity in miles per hour is equal to the distance in miles divided by time in hours.

Kilometer Per Hour Measurements and Equivalent Mile Per Hour Conversions

Common kilometer per hour values converted to the equivalent mile per hour value
Kilometers Per Hour Miles Per Hour
1 km/h 0.621371 mph
2 km/h 1.2427 mph
3 km/h 1.8641 mph
4 km/h 2.4855 mph
5 km/h 3.1069 mph
6 km/h 3.7282 mph
7 km/h 4.3496 mph
8 km/h 4.971 mph
9 km/h 5.5923 mph
10 km/h 6.2137 mph
11 km/h 6.8351 mph
12 km/h 7.4565 mph
13 km/h 8.0778 mph
14 km/h 8.6992 mph
15 km/h 9.3206 mph
16 km/h 9.9419 mph
17 km/h 10.56 mph
18 km/h 11.18 mph
19 km/h 11.81 mph
20 km/h 12.43 mph
21 km/h 13.05 mph
22 km/h 13.67 mph
23 km/h 14.29 mph
24 km/h 14.91 mph
25 km/h 15.53 mph
26 km/h 16.16 mph
27 km/h 16.78 mph
28 km/h 17.4 mph
29 km/h 18.02 mph
30 km/h 18.64 mph
31 km/h 19.26 mph
32 km/h 19.88 mph
33 km/h 20.51 mph
34 km/h 21.13 mph
35 km/h 21.75 mph
36 km/h 22.37 mph
37 km/h 22.99 mph
38 km/h 23.61 mph
39 km/h 24.23 mph
40 km/h 24.85 mph

More Kilometer Per Hour Speed Conversions

Convert to Knots
1 km/h is equal to 0.539957 knots
Convert to Mach Number
1 km/h is equal to Mach 0.00081
Convert to Speed Of Sound
1 km/h is equal to 0.00081 speed of sound
Convert to Speed Of Light
1 km/h is equal to 9.2657E-10 speed of light
Convert to Feet Per Second
1 km/h is equal to 0.911344 feet per second
Convert to Kilometers Per Second
1 km/h is equal to 0.000278 kilometers per second
Convert to Meters Per Second
1 km/h is equal to 0.277778 meters per second
Convert to Centimeters Per Second
1 km/h is equal to 27.777778 centimeters per second