Speed Converter - MPH, KM/H, Knots & More

Convert between miles per hour, kilometers per hour, knots, meters per second, and other speed units instantly.

How to Use

  1. Enter the speed value in the "From" field
  2. Select the unit you want to convert from (e.g., MPH)
  3. Select the unit you want to convert to (e.g., KM/H)
  4. The conversion result will be displayed automatically
  5. Use the swap button to quickly reverse the conversion direction

FAQ

What is a knot?

A knot is a unit of speed equal to one nautical mile per hour, commonly used in maritime and aviation.

How fast is the speed of light?

The speed of light is approximately 299,792,458 meters per second or 670,616,629 mph.