Kilometers Per Hour to Miles Per Hour Conversion
Enter the speed in kilometers per hour below to get the value converted to miles per hour.
How to Convert Kilometers Per Hour to Miles Per Hour
The fastest way to convert kilometers per hour to miles per hour is to use this simple formula:
The speed in miles per hour is equal to the speed in kilometers per hour divided by 1.609344. Since one kilometer per hour is equal to 1.609344 miles per hour,[1] that's the conversion ratio used in the formula.
For example, here's how to convert 5 kilometers per hour to miles per hour using the formula above.
5 km/h = (5 ÷ 1.609344) = 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.
In formal expressions, the slash, or solidus (/), is used to separate units used to indicate division in an expression.[2]
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.[3]
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 to Mile Per Hour Conversion Table
| Kilometers Per Hour | Miles Per Hour |
|---|---|
| 1 km/h | 0.62 mph |
| 2 km/h | 1.24 mph |
| 3 km/h | 1.86 mph |
| 4 km/h | 2.49 mph |
| 5 km/h | 3.11 mph |
| 10 km/h | 6.21 mph |
| 15 km/h | 9.32 mph |
| 20 km/h | 12.43 mph |
| 25 km/h | 15.53 mph |
| 30 km/h | 18.64 mph |
| 35 km/h | 21.75 mph |
| 40 km/h | 24.85 mph |
| 45 km/h | 27.96 mph |
| 50 km/h | 31.07 mph |
| 55 km/h | 34.18 mph |
| 60 km/h | 37.28 mph |
| 65 km/h | 40.39 mph |
| 70 km/h | 43.5 mph |
| 75 km/h | 46.6 mph |
| 80 km/h | 49.71 mph |
| 85 km/h | 52.82 mph |
| 90 km/h | 55.92 mph |
| 95 km/h | 59.03 mph |
| 100 km/h | 62.14 mph |
| 105 km/h | 65.24 mph |
| 110 km/h | 68.35 mph |
| 115 km/h | 71.46 mph |
| 120 km/h | 74.56 mph |
| 125 km/h | 77.67 mph |
| 130 km/h | 80.78 mph |
| 135 km/h | 83.89 mph |
| 140 km/h | 86.99 mph |
| 145 km/h | 90.1 mph |
| 150 km/h | 93.21 mph |
| 155 km/h | 96.31 mph |
| 160 km/h | 99.42 mph |
References
- National Institute of Standards and Technology, NIST Guide to the SI, https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8
- National Institute of Standards and Technology, NIST Guide to the SI, Chapter 6: Rules and Style Conventions for Printing and Using Units, https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-6-rules-and-style-conventions-printing-and-using
- Wikipedia, Miles per hour, https://en.wikipedia.org/wiki/Miles_per_hour
