KM/H to mph converter

mph = km/h ÷ 1.609344, or approximately mph = km/h × 0.621371.

One mile is exactly 1.609344 km, so dividing by that number is exact.

Example: 100 km/h ÷ 1.609344 = 62.14 mph.

km/h	mph	Typical use
30 km/h	18.64 mph	Residential zones in many European cities
50 km/h	31.07 mph	Urban limit in much of Europe
80 km/h	49.71 mph	Rural roads in several countries
90 km/h	55.92 mph	Rural roads, e.g. in France and Hungary
100 km/h	62.14 mph	Highways and expressways
120 km/h	74.56 mph	Motorways in several countries
130 km/h	80.78 mph	Motorways in France, Austria and Hungary, among others

Limits vary by country and road, and change from time to time. Always follow the posted signs.

• m/s = km/h ÷ 3.6: 100 km/h is 27.78 m/s. Science and wind speed reports often use m/s.
• knots = km/h ÷ 1.852: 100 km/h is 54.00 knots. Ships and aircraft use knots, nautical miles per hour.

The converter lists all four units, so you can read whichever you need.

km/h	mph
10 km/h	6.21 mph
20 km/h	12.43 mph
40 km/h	24.85 mph
60 km/h	37.28 mph
70 km/h	43.50 mph
110 km/h	68.35 mph
140 km/h	86.99 mph
200 km/h	124.27 mph

Cycling and running speeds are often quoted in km/h too: 25 km/h is 15.53 mph, a brisk pace on a road bike, and 10 km/h (6.21 mph) is a 6-minute-per-kilometer run. High-speed trains in Europe and Asia commonly run at 300 km/h, which is 186.41 mph.

• Multiply by 0.6: 100 km/h × 0.6 = 60 mph (exact: 62.1).
• Divide by 8, multiply by 5: 120 km/h → 15 → 75 mph (exact: 74.6).
• Anchors: 50 km/h ≈ 31 mph, 80 km/h ≈ 50 mph, 130 km/h ≈ 81 mph.

The speedometer in many cars shows both units. The value you type is saved in the page link; use Share to send the exact conversion.

To go the other way, use the mph to km/h converter.