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Kilometers per Hour to Miles per Hour Converter (km/h to mph)

1 km/h = 0.6213711922 mph. Type any value to convert kilometers per hour to miles per hour.

1 km/h = 0.6213711922 mph

Formula: mph = km/h ÷ 1.609344

Common values
Decimals
In every unit 7 units
Meter per second (m/s) 0.2777777778 m/s
Kilometer per hour (km/h) 1 km/h
Mile per hour (mph) 0.6213711922 mph
Knot (kn) 0.5399568035 kn
Foot per second (ft/s) 0.9113444153 ft/s
Mach (Mach) 0.0008162876153 Mach
Speed of light (c) 9.265669311 × 10⁻¹⁰ c

Convert on our server?

If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Calculated in your browser – nothing you type is sent anywhere. Privacy details

Kilometers per hour to miles per hour table

Formula: mph = km/h ÷ 1.609344

Kilometer per hour (km/h)Mile per hour (mph)
0.1 km/h0.06213711922 mph
0.25 km/h0.1553427981 mph
0.5 km/h0.3106855961 mph
1 km/h0.6213711922 mph
2 km/h1.242742384 mph
3 km/h1.864113577 mph
4 km/h2.485484769 mph
5 km/h3.106855961 mph
6 km/h3.728227153 mph
7 km/h4.349598346 mph
8 km/h4.970969538 mph
9 km/h5.59234073 mph
10 km/h6.213711922 mph
12 km/h7.456454307 mph
15 km/h9.320567884 mph
20 km/h12.42742384 mph
25 km/h15.53427981 mph
30 km/h18.64113577 mph
40 km/h24.85484769 mph
50 km/h31.06855961 mph
60 km/h37.28227153 mph
75 km/h46.60283942 mph
100 km/h62.13711922 mph
150 km/h93.20567884 mph
200 km/h124.2742384 mph
250 km/h155.3427981 mph
500 km/h310.6855961 mph
1,000 km/h621.3711922 mph

How to use: Kilometers per Hour to Miles per Hour

  1. 1 Type the value in kilometers per hour.
  2. 2 The result in miles per hour appears at once – or type in the miles per hour field to convert back.
  3. 3 Pick a common value, round to fewer decimals or swap the units with one click.
  4. 4 Copy the result, or open “In every unit” to see the value in all units of speed.

About this tool

Kilometer per hour (km/h) is a unit of speed (metric, accepted for use with the SI); 1 km/h = 0.2777777778 m/s. Mile per hour (mph) is a unit of speed (imperial and US customary); 1 mph = 0.44704 m/s.

To convert kilometers per hour to miles per hour, divide the value by 1.609344 (mph = km/h ÷ 1.609344). Example: 50 km/h = 31.06855961 mph.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

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

To convert kilometers per hour to miles per hour, divide the value by 1.609344: mph = km/h ÷ 1.609344. For example 50 km/h = 31.06855961 mph.

What is 1 km/h in miles per hour?

1 km/h = 0.6213711922 mph. The other way round, 1 mph = 1.609344 km/h.

How exact is the result?

The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.

Can I convert other units of speed here?

Yes – choose any of the 7 units of speed in the From and To lists, or switch to another measurement at the top.

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