OmniUnit

Last updated: September 2026

Speed conversion

Kilometers per Hour to Miles per Hour

Use this page to interpret metric speed limits, car specifications, and weather reports in miles per hour.

Kilometers per Hour

1 km/h

Miles per Hour

0.621371192237 mph

mph = km/h ÷ 1.609344

The formula

How to convert kilometers per hour to miles per hour

Apply mph = km/h ÷ 1.609344. For example, 10 km/h equals 6.21371192237 mph.

Precision

Accurate constants, readable results

OmniUnit calculates with the full stored conversion factor, then displays up to 12 significant digits.

Common kilometers per hour conversions

Kilometers per HourMiles per Hour
10 km/h6.21371192237 mph
30 km/h18.6411357671 mph
50 km/h31.0685596119 mph
80 km/h49.709695379 mph
100 km/h62.1371192237 mph
120 km/h74.5645430685 mph

Related speed conversions

Knots to Kilometers per Hourkn → km/h Kilometers per Hour to Knotskm/h → kn Meters per Second to Miles per Hourm/s → mph Miles per Hour to Meters per Secondmph → m/s