Uses the exact factor 1 mile = 1.609344 km. Note the direction: the dropdown starts on km/h to mph, so use the swap button if you are entering mph.
| mph | km/h | km/h | mph |
|---|---|---|---|
| 20 | 12.4274 | 30 | 48.2803 |
| 30 | 18.6411 | 50 | 80.4672 |
| 40 | 24.8548 | 60 | 96.5606 |
| 50 | 31.0686 | 80 | 128.748 |
| 60 | 37.2823 | 100 | 160.934 |
| 70 | 43.496 | 110 | 177.028 |
| 80 | 49.7097 | 120 | 193.121 |
| 100 | 62.1371 | 130 | 209.215 |