justyourconvertkm/h to mph
Kilometers per hour to miles per hour, instantly.
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km/h to mph
Convert kilometers per hour to miles per hour
1 kilometer per hour = 0.6213711922 miles per hour
Formula: mph = km/h ÷ 1.609344
Kilometers per hour to miles per hour table
| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 1 | 0.6213711922 |
| 2 | 1.242742384 |
| 3 | 1.864113577 |
| 4 | 2.485484769 |
| 5 | 3.106855961 |
| 6 | 3.728227153 |
| 7 | 4.349598346 |
| 8 | 4.970969538 |
| 9 | 5.59234073 |
| 10 | 6.213711922 |
| 15 | 9.320567884 |
| 20 | 12.42742384 |
| 25 | 15.53427981 |
| 50 | 31.06855961 |
| 100 | 62.13711922 |
Calculated on your device with exact factors from NIST and the SI.
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How to convert km/h to mph
Three steps, all in your browser.
- 1
Type a number
Enter a value in either box; the other updates instantly.
- 2
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- 3
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km/h to mph: what to know
Kilometers per hour (km/h) is the speed unit on road signs and speedometers in most of the world, while the United States and the UK post limits in miles per hour (mph). To convert, divide km/h by 1.609344, the exact number of kilometers in a mile (1 mile = 1609.344 m, from the 1959 international yard and pound agreement).
Worked examples: 30 km/h, a common city limit, is 18.64 mph; 80 km/h is 49.71 mph; 130 km/h, a motorway limit in several European countries, is 80.78 mph. For wind speed, 50 km/h is 31.07 mph.
Because the time unit is the hour in both, only the distance part changes, so the factor is the same as for km to miles. For other speed units, a knot is exactly 1.852 km/h and a meter per second is 3.6 km/h; the full unit converter includes both, along with feet per second.
Popular uses
- Understanding speed limits when driving abroad
- Converting car top speeds and spec sheets
- Reading wind speeds in weather reports
- Converting cycling and running speeds
Tips for the best result
- Quick estimate: multiply km/h by 0.6, or by 5 and divide by 8.
- Many speedometers show both scales; the inner ring is usually the second unit.
- For pace (minutes per km or mile), convert the distance rather than the speed.
- Speed cameras and limits are enforced in the local unit, so round down, not up, when converting a limit.
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