Miles per Hour to Kilometers per Hour (mph → km/h)
Formula
km/h = mph × 1.60934Step-by-step
km/h = 0 × 1.60934km/h = 0Conversion Table
| mph | km/h |
|---|---|
| 0 | 0 |
| 1.0000 | 1.6093 |
| 2.0000 | 3.2187 |
| 3.0000 | 4.8280 |
| 4.0000 | 6.4374 |
| 5.0000 | 8.0467 |
| 6.0000 | 9.6561 |
| 7.0000 | 11.265 |
| 8.0000 | 12.875 |
| 9.0000 | 14.484 |
| 10.000 | 16.093 |
| 11.000 | 17.703 |
| 12.000 | 19.312 |
| 13.000 | 20.921 |
| 14.000 | 22.531 |
| 15.000 | 24.140 |
| 16.000 | 25.750 |
| 17.000 | 27.359 |
| 18.000 | 28.968 |
| 19.000 | 30.578 |
| mph | km/h |
|---|---|
| 20.000 | 32.187 |
| 21.000 | 33.796 |
| 22.000 | 35.406 |
| 23.000 | 37.015 |
| 24.000 | 38.624 |
| 25.000 | 40.234 |
| 26.000 | 41.843 |
| 27.000 | 43.452 |
| 28.000 | 45.062 |
| 29.000 | 46.671 |
| 30.000 | 48.280 |
| 31.000 | 49.890 |
| 32.000 | 51.499 |
| 33.000 | 53.108 |
| 34.000 | 54.718 |
| 35.000 | 56.327 |
| 36.000 | 57.936 |
| 37.000 | 59.546 |
| 38.000 | 61.155 |
| 39.000 | 62.764 |
| mph | km/h |
|---|---|
| 40.000 | 64.374 |
| 41.000 | 65.983 |
| 42.000 | 67.592 |
| 43.000 | 69.202 |
| 44.000 | 70.811 |
| 45.000 | 72.420 |
| 46.000 | 74.030 |
| 47.000 | 75.639 |
| 48.000 | 77.249 |
| 49.000 | 78.858 |
| 50.000 | 80.467 |
| 51.000 | 82.077 |
| 52.000 | 83.686 |
| 53.000 | 85.295 |
| 54.000 | 86.905 |
| 55.000 | 88.514 |
| 56.000 | 90.123 |
| 57.000 | 91.733 |
| 58.000 | 93.342 |
| 59.000 | 94.951 |
| mph | km/h |
|---|---|
| 60.000 | 96.561 |
| 61.000 | 98.170 |
| 62.000 | 99.779 |
| 63.000 | 101.39 |
| 64.000 | 103.00 |
| 65.000 | 104.61 |
| 66.000 | 106.22 |
| 67.000 | 107.83 |
| 68.000 | 109.44 |
| 69.000 | 111.04 |
| 70.000 | 112.65 |
| 71.000 | 114.26 |
| 72.000 | 115.87 |
| 73.000 | 117.48 |
| 74.000 | 119.09 |
| 75.000 | 120.70 |
| 76.000 | 122.31 |
| 77.000 | 123.92 |
| 78.000 | 125.53 |
| 79.000 | 127.14 |
Miles per Hour to Kilometers per Hour Conversion
Converting Miles per Hour (mph) to Kilometers per Hour (km/h) is a common speed conversion. 1 mph equals 1.609344 km/h. For example, 100 mph is equal to 160.9344 km/h.
Quick Mental Math: Miles per Hour to Kilometers per Hour
Multiply mph by 1.6. A quick shortcut is add half, then add a bit more.
Why is converting Miles per Hour to Kilometers per Hour tricky?
Road signs, cars, and sports use different speed units depending on the country.
Quick Reference Values
10 mph = 16.093 km/h. 20 mph = 32.187 km/h. 30 mph = 48.28 km/h. 50 mph = 80.467 km/h. 60 mph = 96.561 km/h. 70 mph = 112.654 km/h. 100 mph = 160.934 km/h.
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].
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].
Common Misspellings
People often search for this conversion using these alternate spellings: miles per hour, mile per hour, mi/h, mphs, kilometres per hour, kmph, kph, kilometer per hour, km/hr. All of these refer to the Miles per Hour to Kilometers per Hour conversion.