Convert Kilometer/hour (km/h) to Mile/hour (mph)

1 km/h = 0.621371 mph

Unit conversion from Kilometer/hour to Mile/hour. Use the reference table and formula below to convert Kilometer/hour ⇄ Mile/hour at a glance.

Formula: 1 km/h = 0.621371 mph

Reference table

Kilometer/hourMile/hour
1 km/h0.621371 mph
2 km/h1.24274 mph
3 km/h1.86411 mph
5 km/h3.10686 mph
10 km/h6.21371 mph
20 km/h12.4274 mph
50 km/h31.0686 mph
100 km/h62.1371 mph

About this conversion

Speed conversions help with car speedometers, speed limits, driving abroad and sports.

Frequently asked questions

How do I convert km/h to mph?

Use the formula "1 km/h = 0.621371 mph". For example, 10 km/h = 6.21371 mph.

How many km/h are in 1 mph?

1 mph = 1.60934 km/h (the reverse Mile/hour → Kilometer/hour conversion).

Which is faster, km/h or mph?

For the same number, mph is faster: 1 mph ≈ 1.60934 km/h. The US and UK use mph, while most countries use km/h.

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