1 kmh to mph
Convert 1 kilometers per hour to miles per hour — the answer, the arithmetic and the closest common values, all on one page.
Show your work
1 km/h × 0.621371 = 0.62137119 mph.
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Questions
What is 1 kilometers per hour in miles per hour?
1 km/h = 0.62137119 mph. The arithmetic: 1 km/h × 0.621371 = 0.62137119 mph.
How precise is this result?
The factor is exact by definition, so the only rounding is the display. Higher precision is available on the km/h to mph converter page.
What is 1 mph in km/h?
1 mph = 1.609344 km/h — the inverse direction.