Kilometers per Hour to Miles per Hour (km/h → mph)
Formula
mph = km/h ÷ 1.60934Step-by-step
mph = 0 ÷ 1.60934mph = 0Conversion Table
| km/h | mph |
|---|---|
| 0 | 0 |
| 1.0000 | 0.62137 |
| 2.0000 | 1.2427 |
| 3.0000 | 1.8641 |
| 4.0000 | 2.4855 |
| 5.0000 | 3.1069 |
| 6.0000 | 3.7282 |
| 7.0000 | 4.3496 |
| 8.0000 | 4.9710 |
| 9.0000 | 5.5923 |
| 10.000 | 6.2137 |
| 11.000 | 6.8351 |
| 12.000 | 7.4565 |
| 13.000 | 8.0778 |
| 14.000 | 8.6992 |
| 15.000 | 9.3206 |
| 16.000 | 9.9419 |
| 17.000 | 10.563 |
| 18.000 | 11.185 |
| 19.000 | 11.806 |
| km/h | mph |
|---|---|
| 20.000 | 12.427 |
| 21.000 | 13.049 |
| 22.000 | 13.670 |
| 23.000 | 14.292 |
| 24.000 | 14.913 |
| 25.000 | 15.534 |
| 26.000 | 16.156 |
| 27.000 | 16.777 |
| 28.000 | 17.398 |
| 29.000 | 18.020 |
| 30.000 | 18.641 |
| 31.000 | 19.263 |
| 32.000 | 19.884 |
| 33.000 | 20.505 |
| 34.000 | 21.127 |
| 35.000 | 21.748 |
| 36.000 | 22.369 |
| 37.000 | 22.991 |
| 38.000 | 23.612 |
| 39.000 | 24.233 |
| km/h | mph |
|---|---|
| 40.000 | 24.855 |
| 41.000 | 25.476 |
| 42.000 | 26.098 |
| 43.000 | 26.719 |
| 44.000 | 27.340 |
| 45.000 | 27.962 |
| 46.000 | 28.583 |
| 47.000 | 29.204 |
| 48.000 | 29.826 |
| 49.000 | 30.447 |
| 50.000 | 31.069 |
| 51.000 | 31.690 |
| 52.000 | 32.311 |
| 53.000 | 32.933 |
| 54.000 | 33.554 |
| 55.000 | 34.175 |
| 56.000 | 34.797 |
| 57.000 | 35.418 |
| 58.000 | 36.040 |
| 59.000 | 36.661 |
| km/h | mph |
|---|---|
| 60.000 | 37.282 |
| 61.000 | 37.904 |
| 62.000 | 38.525 |
| 63.000 | 39.146 |
| 64.000 | 39.768 |
| 65.000 | 40.389 |
| 66.000 | 41.010 |
| 67.000 | 41.632 |
| 68.000 | 42.253 |
| 69.000 | 42.875 |
| 70.000 | 43.496 |
| 71.000 | 44.117 |
| 72.000 | 44.739 |
| 73.000 | 45.360 |
| 74.000 | 45.981 |
| 75.000 | 46.603 |
| 76.000 | 47.224 |
| 77.000 | 47.846 |
| 78.000 | 48.467 |
| 79.000 | 49.088 |
Kilometers per Hour to Miles per Hour Conversion
Converting Kilometers per Hour (km/h) to Miles per Hour (mph) is a common speed conversion. 1 km/h equals 0.621371 mph. For example, 100 km/h is equal to 62.137119 mph.
Quick Mental Math: Kilometers per Hour to Miles per Hour
Divide kph by 1.6. A simple estimate is take 60% of the kph value.
Why is converting Kilometers per Hour to Miles per Hour tricky?
The answer is rarely a neat whole number, so quick head math can feel off.
Quick Reference Values
20 km/h = 12.427 mph. 30 km/h = 18.641 mph. 50 km/h = 31.069 mph. 80 km/h = 49.71 mph. 100 km/h = 62.137 mph. 120 km/h = 74.565 mph. 130 km/h = 80.778 mph.
What is Kilometers per Hour?
Kilometers per Hour (km/h) is a unit of speed. Kilometers per hour (km/h) measures speed as the number of kilometers traveled in one hour. It converts directly to meters per second by multiplying by 1000/3600. This unit is standardized internationally for expressing road and vehicle speeds [bipm-si-brochure]. The kilometer per hour unit was adopted alongside the metric system in the 19th century, formalized by the International System of Units (SI) established by the BIPM. It became widespread for transportation speed limits due to metrication efforts in Europe and worldwide [bipm-si-brochure]. Kilometers per hour is the standard speed measurement in most countries, including all European nations, Canada, Australia, and many others. It is used extensively in road traffic regulations, automotive industries, and international transportation standards [nist-si-guide].
What is Miles per Hour?
Miles per Hour (mph) is a unit of speed. Miles per hour measure speed as miles traveled in one hour. One mile equals 1,609.344 meters, so 1 mph equals approximately 0.44704 meters per second [bipm-si-brochure]. This unit is widely used for vehicle speed and speed limits in non-metric countries. Miles per hour originated from the mile and hour units standardized in the British Imperial system. It became common in transportation with the rise of automobiles and was internationally recognized with the mile's 1959 definition [bipm-si-brochure]. The USA, United Kingdom, and several Commonwealth nations use mph for road speed limits and vehicle speeds. It remains standard in aviation and motorsports within these countries, despite metrication efforts [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: kilometres per hour, kmph, kph, kilometer per hour, km/hr, miles per hour, mile per hour, mi/h, mphs. All of these refer to the Kilometers per Hour to Miles per Hour conversion.