Convert kilometers per hour to miles per hour

1 km/h=0.6214mph

Use the converter below to change any kilometers per hour value into miles per hour instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.62137

Conversion formula

Forward

miles per hour = kilometers per hour × 0.6214

Reverse

kilometers per hour = miles per hour × 1.60934

Example: 10 km/h × 0.6214 = 6.21371 mph.

About both units

From

Kilometer per Hour

km/h

Kilometres per hour (km/h) is the standard speed unit in most of the world. European motorways typically allow 120–130 km/h; urban limits are 50 km/h. Car speedometers in metric countries are marked in km/h, often with smaller mph numbers for US and UK travel.

Real-world: German Autobahn typical speed: 130 km/h (recommended) to 180+ (no limit sections). French limit: 130 km/h. Urban: 50 km/h.

Read full kilometer per hour reference →

Mile per Hour

mph

Miles per hour (mph) is the standard road-speed unit in the US, UK and a few other countries. US highways typically 65–75 mph; UK motorways 70 mph. US weather reports wind speed in mph, while meteorologists also use knots.

Real-world: US interstate: 70 mph typical. UK motorway: 70 mph limit. Cycling pro speed: 25 mph. Tornado winds: 110+ mph.

Read full mile per hour reference →

Kilometer per Hour to Mile per Hour conversion table

Common kilometers per hour to miles per hour values for quick reference.

Kilometer per Hour (km/h)	Mile per Hour (mph)
1 km/h	0.6214 mph
5 km/h	3.10686 mph
10 km/h	6.21371 mph
25 km/h	15.5343 mph
50 km/h	31.0686 mph
100 km/h	62.1371 mph
150 km/h	93.2057 mph
200 km/h	124.274 mph
300 km/h	186.411 mph
500 km/h	310.686 mph

Tips & common mistakes

Quick tips

1 km/h = 0.2778 m/s. Divide by 3.6 for m/s.
1 km/h = 0.621 mph. Multiply by 0.62 for a quick mph estimate.
Speed limits: 30 km/h urban, 50 km/h town, 80–100 km/h rural, 110–130 km/h motorway in most of EU.

Avoid these

Using mph values on a km/h speedometer — may misread actual speed.
Converting km/h to m/s by dividing by 3 — correct is 3.6.
Ignoring "E" for exit or other signs while focused on speed limits.

Frequently asked questions

How many miles per hour in a kilometer per hour?

One kilometer per hour equals 0.6214 miles per hour.

How do I convert kilometers per hour to miles per hour?

Multiply the kilometer per hour value by 0.6214 to get the equivalent in miles per hour.

What is 100 kilometers per hour in miles per hour?

100 kilometers per hour equals 62.1371 miles per hour.

Is a kilometer per hour bigger than a mile per hour?

No. 1 kilometer per hour equals 0.6214 miles per hour, so one kilometer per hour is smaller.

How to convert kilometers per hour to miles per hour without a calculator?

Multiply by 0.62 for a quick estimate; use a calculator for precise results.

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