Convert 21 Miles per Hour to Feet per second

21 Miles per Hour (mph)
1 mph = 1.46667 ft/s
=
30.8 Feet per second (ft/s)
1 ft/s = 0.681818 mph

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More information from the unit converter

Q: How many Miles per Hour in a Foot per second?

The answer is 0.681818 Foot per second

Q: How do you convert 21 Mile per Hour (mph) to Foot per second (ft/s)?

21 Mile per Hour is equal to 30.8 Foot per second. Formula to convert 21 mph to ft/s is 21 * 1.4666666667

Q: How many Miles per Hour in 21 Feet per second?

The answer is 14.3182 Miles per Hour