Mile per hour to Kilometer per hour Converter

Mile per hour (mph) is a unit of speed expressing the number of miles traveled in one hour. It's the primary speed unit used in the United States and United Kingdom, providing a familiar measure for vehicle speeds and general motion in imperial systems.

Mile per hour developed with the imperial system and became standard in English-speaking countries. It provided a practical scale for measuring speeds using familiar mile distances, becoming deeply embedded in American and British transportation systems and regulations.

Mph is extensively used in the United States and United Kingdom for vehicle speed limits, automotive speedometers, weather reporting, and general speed measurements. It's standard for road signs, traffic regulations, and vehicle specifications in countries using imperial units.

Kilometer per hour (km/h) is a unit of speed expressing the number of kilometers traveled in one hour. It's one of the most commonly used speed units worldwide, providing an intuitive measure for vehicle speeds and general motion.

Kilometer per hour became widely adopted with the development of the metric system and motorized transportation. It provided a practical scale for measuring vehicle speeds and became the standard speed unit in most countries using the metric system, particularly for road traffic regulations.

Km/h is extensively used for vehicle speed limits, automotive speedometers, weather reporting (wind speeds), and general speed measurements. It's the standard unit for road signs, traffic regulations, and vehicle specifications in most countries worldwide.