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Kilometer / hour to Mile / hour

Convert kilometer / hour (km/h) to mile / hour (mph) — with the exact factor, a quick-reference table and a free converter that works offline.

1 km/h = 0.6213712 mph

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Conversion table

Kilometer / hour (km/h)Mile / hour (mph)
1 km/h0.6213712 mph
2 km/h1.242742 mph
5 km/h3.106856 mph
10 km/h6.213712 mph
20 km/h12.42742 mph
50 km/h31.06856 mph
100 km/h62.13712 mph
500 km/h310.6856 mph

How the conversion works

Both units measure speed. One kilometer / hour equals exactly 0.6213712 mph, so multiply by that factor to convert.

FAQ

How many mile / hours in a kilometer / hour?

1 km/h = 0.6213712 mph.

How do I convert kilometer / hour to mile / hour?

Multiply the kilometer / hour value by 0.6213712. For example, 10 km/h × 0.6213712 = 6.213712 mph.

Where does the factor come from?

The conversion factor is defined in BIPM SI Brochure; both units are speed units converted through meter / second.

Related conversions

Mile / hour to Kilometer / hour Knot to Mile / hour Mile / hour to Knot Meter / second to Kilometer / hour

Conversion factors: BIPM SI Brochure. Computed by the same engine that powers the app.

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