Instant Unit Conversion
Convert KM/H to MPH (km/h to mph)
Exact formula, conversion factors, live calculator, and reference charts for km/h to mph.
Method reviewed:Exact defined factors — international yard and pound (1959), US customary gallon and cup, SI — the values NIST SP 811 lists · reviewed September 2026
Direct AnswerFormula: mph = km/h ÷ 1.609344
1 kilometre per hour is equal to about 0.62137 miles per hour. To convert km/h to mph, divide by 1.609344.
Live KM/H to MPH Calculator
Formula:
mph = km/h ÷ 1.609344Open full speed converter →KM/H to MPH Conversion Table
Quick reference conversion chart from 1 to 100 km/h.
| KM/H (km/h) | MPH (mph) | Mathematical Formula |
|---|---|---|
| 1 km/h | 0.6214 mph | 1 × 0.621371 |
| 2 km/h | 1.2427 mph | 2 × 0.621371 |
| 5 km/h | 3.1069 mph | 5 × 0.621371 |
| 10 km/h | 6.2137 mph | 10 × 0.621371 |
| 15 km/h | 9.3206 mph | 15 × 0.621371 |
| 20 km/h | 12.4274 mph | 20 × 0.621371 |
| 25 km/h | 15.5343 mph | 25 × 0.621371 |
| 50 km/h | 31.0686 mph | 50 × 0.621371 |
| 75 km/h | 46.6028 mph | 75 × 0.621371 |
| 100 km/h | 62.1371 mph | 100 × 0.621371 |
Frequently Asked Questions
What is 100 km/h in mph?
100 km/h is 62.1 mph — the open-road limit across much of Europe and Australia.
Is there a shortcut for km/h to mph?
Multiply by 6 and drop a digit: 80 km/h → 480 → 48 mph. The exact answer is 49.7, so it reads a little low.
What is 130 km/h in mph?
130 km/h is 80.8 mph — the limit on much of the French autoroute network.