Miles per hour to Kilometers per hour Converter (mph to kmph)
Enter a value in miles per hour to see it in kilometers per hour instantly, or type in the kilometers per hour box to convert the other way. 1 miles per hour = 1.609344 kilometers per hour, and 1 kilometers per hour = 0.62137119 miles per hour.
Miles per hour to kilometers per hour (kmph, kph, km/h) uses the mile factor: multiply by 1.609344. Speed limits: 30 mph is 48 km/h, 55 mph is 88.5 km/h and 70 mph is 112.7 km/h. This is also the answer to the search mile to kmph.
1 miles per hour = 1.609344 kilometers per hour. Formula: km/h = mph × 1.609344 (or mph ÷ 0.62137119)
1 miles per hour in all speed units
| Kilometers per hour (km/h) | 1.609344 |
| Meters per second (m/s) | 0.44704 |
| Knots (kn) | 0.86897624 |
| Feet per second (ft/s) | 1.4666667 |
| Min/km (min/km) | 37.282272 |
| Min/mi (min/mi) | 60 |
How to convert miles per hour to kilometers per hour
km/h = mph × 1.609344
Multiply the number of miles per hour by 1.609344. To convert kilometers per hour back to miles per hour, multiply by 0.62137119, or divide by 1.609344.
Example: 5 miles per hour × 1.609344 = 8.04672 kilometers per hour.
Miles per hour to Kilometers per hour conversion table
| Miles per hour | Kilometers per hour |
|---|---|
| 1 mph | 1.609344 km/h |
| 2 mph | 3.218688 km/h |
| 3 mph | 4.828032 km/h |
| 4 mph | 6.437376 km/h |
| 5 mph | 8.04672 km/h |
| 6 mph | 9.656064 km/h |
| 7 mph | 11.265408 km/h |
| 8 mph | 12.874752 km/h |
| 9 mph | 14.484096 km/h |
| 10 mph | 16.09344 km/h |
| 12 mph | 19.312128 km/h |
| 15 mph | 24.14016 km/h |
| 20 mph | 32.18688 km/h |
| 25 mph | 40.2336 km/h |
| 30 mph | 48.28032 km/h |
| 40 mph | 64.37376 km/h |
| 50 mph | 80.4672 km/h |
| 60 mph | 96.56064 km/h |
| 70 mph | 112.65408 km/h |
| 75 mph | 120.7008 km/h |
| 80 mph | 128.74752 km/h |
| 90 mph | 144.84096 km/h |
| 100 mph | 160.9344 km/h |
| 200 mph | 321.8688 km/h |
| 250 mph | 402.336 km/h |
| 500 mph | 804.672 km/h |
| 1,000 mph | 1,609.344 km/h |
| Kilometers per hour | Miles per hour |
|---|---|
| 1 km/h | 0.62137119 mph |
| 2 km/h | 1.2427424 mph |
| 3 km/h | 1.8641136 mph |
| 4 km/h | 2.4854848 mph |
| 5 km/h | 3.106856 mph |
| 6 km/h | 3.7282272 mph |
| 7 km/h | 4.3495983 mph |
| 8 km/h | 4.9709695 mph |
| 9 km/h | 5.5923407 mph |
| 10 km/h | 6.2137119 mph |
| 12 km/h | 7.4564543 mph |
| 15 km/h | 9.3205679 mph |
| 20 km/h | 12.427424 mph |
| 25 km/h | 15.53428 mph |
| 30 km/h | 18.641136 mph |
| 40 km/h | 24.854848 mph |
| 50 km/h | 31.06856 mph |
| 60 km/h | 37.282272 mph |
| 70 km/h | 43.495983 mph |
| 75 km/h | 46.602839 mph |
| 80 km/h | 49.709695 mph |
| 90 km/h | 55.923407 mph |
| 100 km/h | 62.137119 mph |
| 200 km/h | 124.27424 mph |
| 250 km/h | 155.3428 mph |
| 500 km/h | 310.6856 mph |
| 1,000 km/h | 621.37119 mph |
About the miles per hour and the kilometers per hour
Miles per hour is the road speed unit in the US and the UK. 60 mph is about 96.6 km/h, or one mile a minute.
Kilometers per hour (km/h, often written kmph or kph) is the road speed unit in most of the world. 100 km/h is about 62 mph.
Frequently asked questions
How many kilometers per hour are in a miles per hour?
There are 1.609344 kilometers per hour in 1 miles per hour. For any number of miles per hour, multiply by 1.609344.
How many miles per hour are in a kilometers per hour?
1 kilometers per hour = 0.62137119 miles per hour. To convert kilometers per hour to miles per hour, multiply by 0.62137119 or divide by 1.609344.
What is 5 miles per hour in kilometers per hour?
5 miles per hour = 8.04672 kilometers per hour (5 × 1.609344).
Is the mph to kmph conversion exact?
Yes. A mile is exactly 1,609.344 meters and an hour is 3,600 seconds, so 1 mph is exactly 0.44704 m/s and exactly 1.609344 km/h. Results are rounded to eight significant digits for display.
Related calculators
Last updated . Formulas are shown on the page and checked against the worked example.
Conversion factors are exact international definitions where one exists and standard reference values elsewhere. Results are rounded to 8 significant digits.