Free & Instant
Speed Converter
Convert between km/h, mph, m/s, knots and more — instantly and accurately.
Speed Converter
Enter a value and select units to convert.
Converted Value
1 km/h = 0.6214 mphAbout Speed Conversion
Speed conversion lets you switch between metric units (km/h, m/s) and imperial units (mph, ft/s), plus knots used in aviation and marine navigation.
Common Speed Conversions
| From | To | Multiply By |
|---|---|---|
| Km/h | Mph | 0.621371 |
| Mph | Km/h | 1.60934 |
| m/s | Km/h | 3.6 |
| Knots | Mph | 1.15078 |
Frequently Asked Questions
What is a knot?+
A knot is a unit of speed equal to one nautical mile per hour, commonly used in aviation, marine, and meteorology.
How many mph is 100 km/h?+
100 km/h is approximately 62.14 mph.