Speed Converter

Convert between kilometers per hour, miles per hour, meters per second, and knots with our easy-to-use conversion tool.

Speed Value

From

Speed Conversion Reference

1 km/h

0.621371

0.277778

0.539957

1 mph

1.60934

0.44704

0.868976

1 m/s

3.6

2.23694

1.94384

1 Knot

1.852

1.15078

0.514444

How to Use the Speed Converter

Enter the speed value you want to convert
Select the unit you're converting from (km/h, mph, m/s, knots)
Select the unit you want to convert to
View your converted result instantly

Frequently Asked Questions

How do I convert speed measurements?

What speed units are supported?

Is this speed converter accurate?

Do I need to install anything to use this converter?

About Speed Conversions

Speed conversion is essential for transportation, sports, weather forecasting, and navigation. Different countries and fields use different measurement systems, with the metric system (km/h) being used globally and the imperial system (mph) primarily used in the United States. Knots are commonly used in aviation and maritime contexts.

Common Speed Conversions

1 km/h = 0.621371 mph
1 mph = 1.60934 km/h
1 m/s = 3.6 km/h
1 knot = 1.15078 mph
1 knot = 1.852 km/h
1 m/s = 2.23694 mph

Usage Tips

For road signs and vehicle speed, use km/h or mph depending on the country
For scientific work, use meters per second (m/s)
For aviation and maritime applications, use knots
For weather reports, wind speed is often given in km/h, mph, or knots