Convert Mile per Hour to Millimeter per Second (mph to Millimeter per Second)

Mile per Hour (mph) and Millimeter per Second (Millimeter per Second) are both units of speed. With the conversion form below, you can effortlessly and accurately convert mile per hour to millimeter per second. This free online calculator tool makes it simple and easy to perform the conversion from mph unit to the Millimeter per Second unit.

Speed is the scalar measure of how fast an object moves—the distance covered per unit time. The SI unit is metre per second (m/s). Other common units include kilometres per hour (km/h), used on road signs across most of the world, and miles per hour (mph), used in the United States and United Kingdom. In aviation and maritime contexts, speed is measured in knots (nautical miles per hour). The speed of light in a vacuum, c ≈ 299,792,458 m/s, is the ultimate speed limit in the universe.

Mile per hour (mi/hr, mph, mi/h, mphr) is the standard speed unit for road traffic in the United States, United Kingdom, and several other countries. Speed limits on roads, highways, and in residential areas are set in miles per hour. Car speedometers display miles per hour in these nations. Weather reports in these countries express wind speeds in miles per hour. The unit remains deeply embedded in American and British culture, legal systems, and everyday communication despite most of the world using kilometers per hour. Learn more about mile per hour.

Millimeter per second (millimeters/second, mm/s, mm/sec) measures speed as the distance of one millimeter covered in one second. Microfluidics systems, precision laboratory equipment, and biomedical devices use millimeters per second for measuring cell or fluid movement. Seismic vibrations and ground motion are sometimes expressed in millimeters per second. The unit provides appropriate scale for microscopic or highly precise measurements. Learn more about millimeter per second.