KM/H to mph converter
Type km/h or mph and watch both update live.
1 km/h = 0.6214 mph, so divide km/h by 1.609344.
Kmh to mph conversion table
| Kilometers per hour | Miles per hour |
|---|---|
| 10 | 6.2 |
| 20 | 12.4 |
| 30 | 18.6 |
| 40 | 24.9 |
| 50 | 31.1 |
| 60 | 37.3 |
| 70 | 43.5 |
| 80 | 49.7 |
| 90 | 55.9 |
| 100 | 62.1 |
| 110 | 68.4 |
| 120 | 74.6 |
| 130 | 80.8 |
| 140 | 87 |
| 150 | 93.2 |
| 160 | 99.4 |
| 180 | 111.8 |
| 200 | 124.3 |
- Live two-way conversion
- Common speed limits
- Table from 10 to 200 km/h
How to convert kmh to mph
- Type a value in the km/h box.
- The mph box updates as you type.
- Check the table for a familiar speed limit.
Reading a foreign speed limit sign
A km/h figure on a rental car dashboard or a road sign abroad does not mean much to someone used to mph, since the two scales differ by a fixed factor of 1.609344 with no simple rounding between them. Converting first, even roughly, helps translate an unfamiliar speed limit into something recognizable.
This comes up most for US and UK drivers renting a car almost anywhere else, since nearly every other country's road signs, speedometers and traffic laws are written in km/h.
International speed limits in mph
| Speed | km/h | mph |
|---|---|---|
| Urban limit | 50 km/h | 31.1 mph |
| Common highway | 100 km/h | 62.1 mph |
| Faster highway | 120 km/h | 74.6 mph |
| Some autobahn sections | 140 km/h | 87 mph |
| German autobahn advisory | 130 km/h | 80.8 mph |
The 130 km/h figure is only a suggested speed on unrestricted stretches of German autobahn, not a hard limit, which is why some cars there legally travel faster.
A quick way to estimate without a calculator
- Divide km/h by 1.6 for a fast estimate. For 120 km/h: 120 divided by 1.6 is 75, close to the exact 74.6 mph.
- That shortcut is accurate to within about half a percent for typical road speeds.
- For 140 km/h, the same method gives 87.5, close to the exact 87 mph.
KM/H to mph FAQ
How many mph is 100 km/h?
100 km/h equals about 62.1 mph.
How many mph is 120 km/h?
120 km/h, a common European highway speed, equals about 74.6 mph.
How do I convert without a calculator?
Divide km/h by 1.6 for a quick estimate, then check the exact figure here.
Why do speedometers show both units?
Cars sold in more than one country often mark km/h on the outer ring and mph on the inner ring, or the reverse.
How many mph is 50 km/h?
50 km/h, a common urban speed limit outside the US, equals about 31.1 mph.
How many mph is 130 km/h?
130 km/h equals about 80.8 mph. It is the advisory (not mandatory) speed suggested on stretches of German autobahn that have no posted limit.
Why does most of the world use km/h instead of mph?
Almost every country adopted the metric system for road signs and vehicle speeds, leaving mph as a holdout mainly in the US and UK, so a km/h figure needs converting for anyone used to reading mph.
How many mph is 90 km/h?
90 km/h equals about 55.9 mph.