Convert Miles Per Hour to Kilometers Per Hour

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

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Results in Kilometers Per Hour:
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1 mph = 1.609344 km/h

How to Convert Miles Per Hour to Kilometers Per Hour

Speedometers are used in vehicles to measure speed

To convert a mile per hour measurement to a kilometer per hour measurement, multiply the speed by the conversion ratio. One mile per hour is equal to 1.609344 kilometers per hour, so use this simple formula to convert:

kilometers per hour = miles per hour × 1.609344

The speed in kilometers per hour is equal to the miles per hour multiplied by 1.609344.

For example, here's how to convert 5 miles per hour to kilometers per hour using the formula above.
5 mph = (5 × 1.609344) = 8.04672 km/h

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

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.

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.

Mile Per Hour Measurements and Equivalent Kilometer Per Hour Conversions

Common mile per hour values converted to the equivalent kilometer per hour value
Miles Per Hour Kilometers Per Hour
1 mph 1.6093 km/h
2 mph 3.2187 km/h
3 mph 4.828 km/h
4 mph 6.4374 km/h
5 mph 8.0467 km/h
6 mph 9.6561 km/h
7 mph 11.27 km/h
8 mph 12.87 km/h
9 mph 14.48 km/h
10 mph 16.09 km/h
11 mph 17.7 km/h
12 mph 19.31 km/h
13 mph 20.92 km/h
14 mph 22.53 km/h
15 mph 24.14 km/h
16 mph 25.75 km/h
17 mph 27.36 km/h
18 mph 28.97 km/h
19 mph 30.58 km/h
20 mph 32.19 km/h
21 mph 33.8 km/h
22 mph 35.41 km/h
23 mph 37.01 km/h
24 mph 38.62 km/h
25 mph 40.23 km/h
26 mph 41.84 km/h
27 mph 43.45 km/h
28 mph 45.06 km/h
29 mph 46.67 km/h
30 mph 48.28 km/h
31 mph 49.89 km/h
32 mph 51.5 km/h
33 mph 53.11 km/h
34 mph 54.72 km/h
35 mph 56.33 km/h
36 mph 57.94 km/h
37 mph 59.55 km/h
38 mph 61.16 km/h
39 mph 62.76 km/h
40 mph 64.37 km/h

More Mile Per Hour Speed Conversions

Convert to Knots
1 mph is equal to 0.868976 knots
Convert to Mach
1 mph is equal to Mach 0.001303
Convert to Speed Of Sound
1 mph is equal to 0.001303 speed of sound
Convert to Speed Of Light
1 mph is equal to 1.4912E-9 speed of light
Convert to Feet Per Second
1 mph is equal to 1.466667 feet per second
Convert to Kilometers Per Second
1 mph is equal to 0.000447 kilometers per second
Convert to Meters Per Second
1 mph is equal to 0.44704 meters per second
Convert to Centimeters Per Second
1 mph is equal to 44.704 centimeters per second

Unit of Measurement Conversion Made Easy!

There are thousands of units of measure in use across the globe, and converting from one to another can be very difficult since each conversion requires a different formula to derive the result. Our unit of measurement conversion tools are meant to be dead easy. We break the mold of the typical dry and complicated experience. In addition to converting from one measurement to another, we provide the formula so you can see how the conversion is done, use it on you’re own calculator if you need to!

Convert units of length, weight, volume, and area between imperial and metric measures

Understanding the Metric System

The metric system makes it relatively easy to convert from one metric unit to another metric unit. The metric system uses a base unit, think meters or grams, and a prefix such as kilo or milli. The prefixes differ from the base units by differing powers of 10. So to convert within the metric system it’s usually a matter of multiplying or dividing by one of the powers of 10.

Here is a list of some of the common metric prefixes:

  • “kilo” – 1,000x larger
  • “hecto” – 100x larger
  • “deca” – 10x larger
  • “deci” – 10x smaller
  • “centi” – 100x smaller
  • “milli” – 1,000x smaller

There is a helpful mnemonic for remembering the prefixes: “King Henry Died Until Drinking Chocolate Milk.”
The u in Until refers to the base unit.