Miles per Hour to Kilometers per Hour Converter
Convert speed from mph to km/h.
Result
0
km/h
1 mph = 1.60934 km/h
How to convert mph to km/h?
How many km/h are in mph? The relationship is:
- 1 mph = 1.60934 km/h
- 1 km/h = 0.621371 mph
To convert mph to km/h, multiply the value by 1.60934.
Formula: km/h = mph × 1.60934
Step-by-Step Calculation
- Take the number of mph you want to convert (e.g., 60).
- Multiply that value by 1.60934.
- The result is the value in km/h. (Example: 60 × 1.60934 = 96.5604 km/h).
How to use this converter?
Enter mph and get km/h instantly—useful for driving abroad, understanding speed limits, and converting car speedometer readings.
Common mph to km/h Conversions
Quick reference guide for popular speeds.
10 mph = 16.0934 km/h
20 mph = 32.1868 km/h
30 mph = 48.2802 km/h
40 mph = 64.3736 km/h
50 mph = 80.467 km/h
60 mph = 96.5604 km/h
70 mph = 112.6538 km/h
80 mph = 128.7472 km/h
90 mph = 144.8406 km/h
100 mph = 160.934 km/h
History: mph vs km/h
Miles per hour (mph) is used mainly in the US and UK for road speeds. Kilometers per hour (km/h) is used in most countries worldwide that use the metric system.
Common mph to km/h Conversions
| mph Input | km/h Result |
|---|---|
| 10 mph | 16.0934 km/h |
| 20 mph | 32.1868 km/h |
| 30 mph | 48.2802 km/h |
| 40 mph | 64.3736 km/h |
| 50 mph | 80.467 km/h |
| 60 mph | 96.5604 km/h |
| 70 mph | 112.6538 km/h |
| 80 mph | 128.7472 km/h |
| 90 mph | 144.8406 km/h |
| 100 mph | 160.934 km/h |
Frequently Asked Questions
How do I convert mph to km/h?
Multiply mph by 1.60934 to get km/h.
How many km/h is 60 mph?
60 mph equals 96.5604 km/h.
How many km/h is 70 mph?
70 mph equals 112.6538 km/h.
How do I convert km/h back to mph?
Multiply km/h by 0.621371 to get mph.
Is the conversion exact?
It’s standardized; answers may be rounded depending on decimals shown.