Convert kilometers per hour to miles per hour
1 km/h = 0.621371192 mph · Formula and table below. Converting the other way? mph to km/h Converter →
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Other units
- Meter per second (m/s) 0.277777778
- Kilometer per hour (km/h) 1
- Mile per hour (mph) 0.621371192
- Foot per second (ft/s) 0.911344415
- Knot (kn) 0.539956803
Reviewed on by the Skala Convert team
Multiply km/h by 0.6214. One hundred kilometres per hour is 62.1 mph.
How do you convert km/h to mph?
mph = km/h × 0.621371
Mental method: multiply by 6 and drop the last digit. 120 km/h → 72 mph (true: 74.6). Close enough to stay out of trouble; add a couple of mph for accuracy at higher speeds.
Common speed limits
- 30 km/h = 19 mph — residential zones in many European cities
- 50 km/h = 31 mph — typical urban limit
- 90 km/h = 56 mph — rural roads
- 120 km/h = 75 mph
- 130 km/h = 81 mph — motorway limit in France and Italy
Does the German Autobahn have a speed limit?
Large stretches of the German Autobahn have no general speed limit, but there is an advisory speed, the Richtgeschwindigkeit, of 130 km/h — 81 mph. Drivers who exceed it and are involved in a crash can be held partly liable even when not at fault. Many sections also carry posted limits.
How do you read a speedometer abroad?
Cars sold in the UK and US show mph in large figures with km/h on an inner ring; European cars do the opposite. When driving a foreign-market car, use the scale that matches the road signs, not the larger numbers. For distances, see km to miles.
Where does 0.621371 come from?
From the international mile of exactly 1,609.344 m, as listed in NIST Special Publication 811, the US guide to the SI; one kilometre per hour is 1/1.609344 mph. UNECE Regulation No. 39 governs how vehicle speedometers display speed in Europe and the other countries that apply it, and requires that they never read below the true speed.
Formula
Miles per hour = Kilometers per hour × 0.621371192
10 km/h = 6.213712 mph
Conversion table
| km/h | mph |
|---|---|
| 1 | 0.621371192 |
| 2 | 1.242742 |
| 5 | 3.106856 |
| 10 | 6.213712 |
| 20 | 12.427424 |
| 25 | 15.53428 |
| 50 | 31.06856 |
| 100 | 62.137119 |
Frequently asked questions
What is 100 km/h in mph?
62.1 mph.
How fast is 130 km/h in mph?
80.8 mph.
Does the Autobahn have a speed limit?
Many sections have none, but an advisory speed of 130 km/h applies throughout.