Feet per Second to Miles per Hour Converter

How to convert Feet per Second to Miles per Hour

To convert Feet per Second to Miles per Hour, multiply the value in Feet per Second by 0.68181988. For example, 5 ft/s = 3.4090994 mph.

The Feet per Second-to-Miles per Hour conversion comes up often in everyday and professional contexts alike. With 1 ft/s equal to 0.68181988 mph, you can use the tool above for any value, or scan the table below for the most common Feet per Second amounts and their Miles per Hour equivalents.

Speed conversions are used in driving, sports, aviation, weather, and physics. The most common need is converting between kilometers per hour and miles per hour when traveling between countries.

Understanding Feet per Second and Miles per Hour

Most of the world posts speed limits in kilometers per hour, while the US and UK use miles per hour. Meters per second is the scientific standard, and knots (nautical miles per hour) are used in aviation and maritime navigation. A car at 100 km/h is traveling about 62 mph — a conversion worth knowing for any international driver.

How accurate is this conversion?

Speed conversions are exact because they derive directly from exact length and time definitions. Since 1 mile = 1.609344 kilometers exactly, all speed conversions between these units are precise.

All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.

Quick reference: common Feet per Second to Miles per Hour values

The most frequently searched conversions are 1 Feet per Second = 0.68181988 Miles per Hour, 5 Feet per Second = 3.4090994 Miles per Hour, 10 Feet per Second = 6.8181988 Miles per Hour, and 100 Feet per Second = 68.181988 Miles per Hour. The full table further down covers every common value, and the calculator handles any number you need in between.