Miles per hour is a unit of speed, expressing the number of international miles covered per hour. The common abbreviation in everyday use is mph, although mi/h, using the SI method of expressing derived units, is sometimes used, especially in the United States. The preferred SI unit for velocity is m/s, although km/h is often used as a replacement for mph.

1 mph is equal to:

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

External link

• Conversion Calculator for Units of SPEED (http://www.projects.ex.ac.uk/trol/scol/ccspeed.htm)