1 mph to kmh
Convert 1 miles per hour to kilometers per hour — the answer, the arithmetic and the closest common values, all on one page.
Show your work
1 mph × 1.6093 = 1.609344 km/h.
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Questions
What is 1 miles per hour in kilometers per hour?
1 mph = 1.609344 km/h. The arithmetic: 1 mph × 1.6093 = 1.609344 km/h.
How precise is this result?
The factor is exact by definition, so the only rounding is the display. Higher precision is available on the mph to km/h converter page.
What is 1 km/h in mph?
1 km/h = 0.62137119 mph — the inverse direction.