Kilometers per Hour to Miles per Hour Converter
Convert kilometers per hour to miles per hour instantly. 1 km/h equals 0.621371 mph. Use the converter above, or the formula, worked example and table below for common speeds.
Live formula: 1 km/h → mph
See all Speed Converter conversions →
How to Use the Kilometers per Hour to Miles per Hour Converter
- 1. Enter a value in the left input field — the converter is already set to Kilometer per hour (km/h) to Mile per hour (mph).
- 2. Read the instant converted value and review the live formula line.
- 3. Use the swap button to reverse the direction, or copy either amount.
- 4. Check the table below for common km/h to mph conversions.
Kilometers per Hour to Miles per Hour Converter Formula
mph = km/h ÷ 1.609344
Worked example: 120 km/h ÷ 1.609344 = 74.5645 mph
Kilometer per hour (km/h) to Mile per hour (mph) Conversion Table
| From Unit | To Unit | Input | Result |
|---|---|---|---|
| Kilometer per hour (km/h) | Mile per hour (mph) | 10 | 6.213712 |
| Kilometer per hour (km/h) | Mile per hour (mph) | 30 | 18.641136 |
| Kilometer per hour (km/h) | Mile per hour (mph) | 50 | 31.06856 |
| Kilometer per hour (km/h) | Mile per hour (mph) | 80 | 49.709695 |
| Kilometer per hour (km/h) | Mile per hour (mph) | 100 | 62.137119 |
| Kilometer per hour (km/h) | Mile per hour (mph) | 120 | 74.564543 |
| Kilometer per hour (km/h) | Mile per hour (mph) | 150 | 93.205679 |
| Kilometer per hour (km/h) | Mile per hour (mph) | 200 | 124.274238 |
Did You Know?
- 1 km/h equals 0.621371 mph — the same factor as kilometers to miles.
- A common motorway limit in Europe is 130 km/h (80.78 mph).
Frequently Asked Questions
How many mph is 100 km/h?
100 km/h equals 62.14 mph.
What is 130 km/h in mph?
130 km/h equals 80.78 mph — a common motorway speed limit in Europe (130 × 0.621371 = 80.778 mph).
How do I convert km/h to mph mentally?
Multiply the km/h by 0.62 for a quick estimate. For the exact value, divide by 1.609344.
Why do speedometers show both?
Cars are sold in both mph and km/h markets, so many speedometers show both scales — one for each system.