Kilometres per hour (American spelling: kilometers per hour) is a unit of both speed (scalar) and velocity (vector). The symbol is km·h⁻¹ or km/h but is often, though incorrectly, abbreviated to kph. It is often spoken and sometimes written as klicks or kays in slang usage.

By definition, an object travelling at a speed of 1 km·h⁻¹ for an hour would move 1 kilometre.

Conversions

• 3.6 km·h⁻¹ ≡ 1 m·s⁻¹, the SI derived unit of speed, metre per second
• 1 km·h⁻¹ ≈ 0.27778 m·s⁻¹
• 1 km·h⁻¹ ≈ 0.62137 mph ≈ 0.91134 feet per second
• 1 knot = 1.852 km·h⁻¹ exactly

See also

• Orders of magnitude (speed)

External links

• Conversion Calculator for Units of Speed

Units of velocity

Kilometar na sat | Километър в час | Kilometer pro Stunde | Kilómetro por hora | Kilomètre par heure | 킬로미터 매 시간 | Kilometar na sat | Chilometro orario | קילומטר לשעה | Kilometer per uur | キロメートル毎時 | Km/t | Kilometr na godzinę | Quilômetro por hora | Километр в час | Kilometer na uro | Kilometriä tunnissa | Kilometer per timme | กิโลเมตรต่อชั่วโมง