Convert speed between miles per hour, kilometers per hour, meters per second, feet per second, knots, mach, minutes per mile, and minutes per kilometer. You can also estimate travel time from speed and distance.
MPH to KM/H:
km/h = mph × 1.609344
KM/H to MPH:
mph = km/h ÷ 1.609344
MPH to m/s:
m/s = mph × 0.44704
Travel time:
time = distance ÷ speed
Speed conversions are useful for driving, speed limits, road trips, racing, motorcycles, cycling, running pace, aviation, boating, GPS data, fitness tracking, and comparing mph, km/h, m/s, knots, and pace.
Use this converter when a speed value is listed in a different unit than the one you need.
Your result shows the entered speed converted into the selected unit. The converter also displays reference values in mph, km/h, m/s, ft/s, knots, mach, minutes per mile, minutes per kilometer, and estimated travel time.
Real travel time can vary because of traffic, stops, road conditions, weather, speed limits, construction, elevation changes, and driving or riding style.
Multiply mph by 1.609344. For example, 60 mph is 96.56 km/h.
Divide km/h by 1.609344. For example, 100 km/h is about 62.14 mph.
Multiply mph by 0.44704. For example, 60 mph is about 26.82 m/s.
A knot is one nautical mile per hour. It is commonly used for marine, aviation, and wind speed.
Divide distance by speed. For example, 100 miles at 50 mph takes about 2 hours.