Miles per Hour to Kilometers per Hour Converter
American speed limits, US car reviews, and baseball pitch speeds all speak mph, while the rest of the world drives in km/h. Converting mph to kilometers per hour helps metric drivers in the US, readers of American car magazines, and fans comparing sprint speeds. One mph equals exactly 1.609344 km/h — multiply mph by 1.609344. The converter above gives instant two-way results, the table covers every US speed limit from 25 to 80 mph, and the FAQs translate the figures drivers encounter most.
MPH to KM/H Calculator
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Quick Reference Table
| Miles per Hour (mph) | Kilometers per Hour (km/h) |
|---|---|
| 1 | 1.6093 |
| 2 | 3.2187 |
| 3 | 4.828 |
| 4 | 6.4374 |
| 5 | 8.0467 |
| 6 | 9.6561 |
| 7 | 11.2654 |
| 8 | 12.8748 |
| 9 | 14.4841 |
| 10 | 16.0934 |
| 25 | 40.2336 |
| 55 | 88.5139 |
| 65 | 104.6074 |
| 80 | 128.7475 |
Frequently Asked Questions
How many kilometers per hour are in 70 miles per hour?
70 miles per hour = 112.6541 kilometers per hour. Just apply the conversion to any value with the converter above.
What is the formula to convert miles per hour to kilometers per hour?
To convert miles per hour to kilometers per hour, multiply the number of mph by 1.609344. In short: 1 mph = 1.609344 km/h.
What is 70 mph in km/h?
70 mph equals 112.654 km/h — the typical US interstate limit. Multiply 70 × 1.609344 = 112.65408 km/h. Enter 70 in the converter to confirm.
How do I convert kilometers per hour back to miles per hour?
Simply reverse the math: to go from kilometers per hour to miles per hour, divide the kilometers per hour by 1.609344. Or use our dedicated Kilometers per Hour to Miles per Hour converter.