Miles per hour to Kilometers per hour Converter (mph to kmph)
Content updated .
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 and tools
Conversion factors are exact international definitions where one exists and standard reference values elsewhere. Results are rounded to 8 significant digits.