DailyCalc

Kilometers per hour to Miles per hour (km/h to mph)

1 km/h ≈ 0.621371 mph. Type any value to convert it.

1 kilometer per hour =

0.6213711922 mph

miles per hour

Conversion factor
1 km/h ≈ 0.6213711922 mph

Fix the highlighted field to update the result.

Show in all common units
1 km/h in other units
UnitValue
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

How to convert kilometers per hour to miles per hour

1 km/h ≈ 0.621371 mph

1 km/h = 1 ÷ 1.609344 mph, about 0.6213712 mph. The mile is exactly 1.609344 km (NIST SP 811 B.9).

Examples

Km/h to mph chart

Kilometers per hour to miles per hour
Kilometers per hour (km/h)Miles per hour (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
10 km/h6.2137119 mph
15 km/h9.3205679 mph
20 km/h12.427424 mph
25 km/h15.53428 mph
50 km/h31.06856 mph
75 km/h46.602839 mph
100 km/h62.137119 mph
119 km/h73.943172 mph
252 km/h156.58554 mph

Common mistakes

  • kph, kmh and km/h all mean kilometers per hour.
  • Multiplying by 0.6 understates the result by about 3.4%.

Frequently asked questions

What is 100 km/h in mph?

100 km/h is about 62.1 mph.

How many mph is 1 km/h?

About 0.6214 mph.

What is 120 km/h in mph?

120 km/h is about 74.6 mph.

At what speed in mph does a Category 1 hurricane start?

The National Hurricane Center lists 119 km/h as 74 mph. The exact conversion of 119 km/h is about 73.9 mph; the thresholds are rounded separately.