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KM/H to MPH Converter

Convert KM/H to MPH instantly: 1 kilometer/hour = 0.6213711922 miles/hour. Free km/h to mph converter with formula, chart and examples.

1 kilometer/hour = 0.6213711922 miles/hour

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How to Convert KM/H to MPH

The formula is miles/hour = kilometers/hour × 0.6213711922. 1 kilometer/hour = 0.6213711922 miles/hour. Type any value in the converter above for an instant answer, or use the chart below for the most common values.

This page is preset for kilometer/hour to mile/hour conversions, but you can switch either list to any of the 32 units in the Speed Converter, or go the other way with the MPH to KM/H converter.

KM/H to MPH conversion chart

KM/HMPH
0.1 km/h0.062137119 mph
0.25 km/h0.1553428 mph
0.5 km/h0.3106856 mph
1 km/h0.62137119 mph
2 km/h1.2427424 mph
3 km/h1.8641136 mph
4 km/h2.4854848 mph
5 km/h3.106856 mph
6 km/h3.7282272 mph
7 km/h4.3495983 mph
8 km/h4.9709695 mph
9 km/h5.5923407 mph
10 km/h6.2137119 mph
11 km/h6.8350831 mph
12 km/h7.4564543 mph
13 km/h8.0778255 mph
14 km/h8.6991967 mph
15 km/h9.3205679 mph
16 km/h9.9419391 mph
17 km/h10.56331 mph
18 km/h11.184681 mph
19 km/h11.806053 mph
20 km/h12.427424 mph
25 km/h15.53428 mph
30 km/h18.641136 mph
40 km/h24.854848 mph
50 km/h31.06856 mph
60 km/h37.282272 mph
70 km/h43.495983 mph
75 km/h46.602839 mph
80 km/h49.709695 mph
90 km/h55.923407 mph
100 km/h62.137119 mph
120 km/h74.564543 mph
150 km/h93.205679 mph
200 km/h124.27424 mph
250 km/h155.3428 mph
500 km/h310.6856 mph
1,000 km/h621.37119 mph

Common KM/H to MPH conversions

  • 1 kilometer/hour = 0.6213711922 miles/hour
  • 30 km/h = 18.641136 mph
  • 50 km/h = 31.06856 mph
  • 80 km/h = 49.709695 mph
  • 100 km/h = 62.137119 mph
  • 120 km/h = 74.564543 mph

Popular speed converters

MPH to KM/HKnots to MPHM/S to KM/H

How to Use the KM/H to MPH Converter

  1. Type a value in the From box and choose its unit.
  2. Pick the unit you want in the To list — the result updates as you type.
  3. Use the swap button to reverse the conversion, or type in the To box to convert backwards.
  4. Check the All conversions table to see your value in every unit; click a row to make it the target.

Frequently Asked Questions

How many miles/hour are in a kilometer/hour?

There are 0.6213711922 miles/hour in 1 kilometer/hour. Going the other way, 1 mile/hour = 1.609344 kilometers/hour.

How do I convert KM/H to MPH?

Use the formula miles/hour = kilometers/hour × 0.6213711922. For example, 1 kilometer/hour = 0.6213711922 miles/hour. Or type the value in the converter above and the answer appears as you type.

What is the KM/H to MPH formula?

miles/hour = kilometers/hour × 0.6213711922 — the conversion factor is exact to the digits shown, using the international definitions of both units.

What is 30 KM/H in MPH?

30 KM/H = 18.641136 MPH.

What is 50 KM/H in MPH?

50 KM/H = 31.06856 MPH.

What is 80 KM/H in MPH?

80 KM/H = 49.709695 MPH.

What is 100 KM/H in MPH?

100 KM/H = 62.137119 MPH.

What is 120 KM/H in MPH?

120 KM/H = 74.564543 MPH.

How do I convert MPH back to KM/H?

Use the swap button in the converter above, or open our MPH to KM/H converter. kilometers/hour = miles/hour × 1.609344.

Is this KM/H to MPH converter accurate?

Yes. It uses exact unit definitions and double-precision maths, and you can show up to 15 significant digits. The table below is calculated with the same formula.

Can I convert KM/H to other speed units?

Yes — pick any unit in the From and To lists above, or open the full Speed Converter, which handles 32 speed units.

Is the KM/H to MPH converter free?

Yes, it is free with no sign-up, and every conversion runs in your browser so nothing is sent to a server.