Speed

What is a Kilometer per Hour? (km/h)

Definition

A kilometer per hour (symbol: km/h or kph) is a unit of speed expressing the number of kilometers traveled in one hour. It is the standard unit for speed limits, vehicle speedometers, and weather wind speeds in most countries that use the metric system.

Common Uses

  • › Road speed limits in metric countries
  • › Vehicle speedometers
  • › Wind speed in weather forecasts
  • › Train and aircraft speed

Converters

KPH to MPH →

Key Facts

  • Symbol
    km/h
  • Category
    Speed
  • 1 km/h ≈ 0.621 mph
  • 1 km/h ≈ 0.278 m/s
  • 100 km/h ≈ 62.1 mph
  • 1.609 km/h = 1 mph

Related Terms

About the Kilometer per Hour

A kilometer per hour (symbol: km/h or kph) is a unit of speed expressing the number of kilometers traveled in one hour. It is the standard unit for speed limits, vehicle speedometers, and weather wind speeds in most countries that use the metric system.

Equivalents and conversions

  • 1 km/h ≈ 0.621 mph
  • 1 km/h ≈ 0.278 m/s
  • 100 km/h ≈ 62.1 mph
  • 1.609 km/h = 1 mph

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