kph = 1 x 1.609344000

Miles per Hour to Kilometers per Hour formula

kph = mph x 1.609344000

UnitFlip uses fixed, auditable conversion factors in the browser. The result is rounded only for display, so you can adjust precision from 0 to 8 decimal places without sending values to a backend.

Common miles per hour to kilometers per hour conversions

Miles per HourKilometers per Hour
0 mph0 kph
1 mph1.61 kph
2 mph3.22 kph
5 mph8.05 kph
10 mph16.09 kph
25 mph40.23 kph
50 mph80.47 kph
100 mph160.93 kph

How to use this converter

Type a number, paste a value with commas if needed, choose the decimal precision, and copy the visible result. Empty input leaves the result blank; invalid numbers show an inline error.

  • 1 mph uses the same formula shown above.
  • For planning, compare nearby values in the table before choosing how much to round.
Caveat: Speed conversions are general references, not legal driving or safety advice.

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