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Speed Converter

Convert speeds between kilometers per hour, miles per hour, meters per second, knots and more.

1 Kilometers per hour (km/h) =

0.62137119

Miles per hour (mph)

All conversions

Meters per second (m/s)
0.277778
Miles per hour (mph)
0.621371
Knots
0.539957
Feet per second (ft/s)
0.911344
Mach (sea level)
0.000816

How to use the Speed Converter

  1. 1Enter the amount you want to convert in the Value field.
  2. 2Pick the unit you are converting from and the unit you are converting to.
  3. 3Read the converted result instantly, or use ⇄ to swap the units.
  4. 4Scroll the “All conversions” panel to see the value in every other unit at once.

Frequently Asked Questions

How do I convert km/h to mph?

Multiply by 0.6214. 100 km/h ≈ 62.1 mph. Going the other way, multiply mph by 1.609.

What is a knot?

One nautical mile per hour = 1.852 km/h = 1.151 mph, used in aviation and shipping.

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