Miles per hour facts for kids

Automobile speedometer, indicating speed in miles per hour on the outer scale and kilometres per hour on the inner scale

United States road sign with maximum speed noted in standard mph

Miles per hour is a unit of measurement. It measures speed. It is the number of miles moved in an hour.

Miles per hour is the unit used for speed limits on roads in the United Kingdom and the United States. It is normally abbreviated in everyday use to mph or MPH. In technical publications it is sometimes abbreviated as mi/h.

The SI unit for velocity (speed, with a direction of movement) is m·s⁻¹ (metres per second).

Conversions

1 mph is equal to:

• 0.44704 m·s⁻¹, the SI derived unit
• 1.609344 km·h⁻¹
• 22/15 =1.4667 feet per second
• approx. 0.868976 knots

Related pages

• metre per second
• Speed
• Velocity

Images for kids

• 

  50 mph speed limit sign in the United Kingdom

See also

In Spanish: Milla por hora para niños