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Convert 21 Feet per second to Millimeters per second

21 Feet per second (ft/s)
1 ft/s = 304.8 mm/s
=
6,400.8 Millimeters per second (mm/s)
1 mm/s = 3.3e-03 ft/s

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More information from the unit converter

Q: How many Feet per second in a Millimeter per second?

The answer is 3.3e-03 Millimeter per second

Q: How do you convert 21 Foot per second (ft/s) to Millimeter per second (mm/s)?

21 Foot per second is equal to 6,400.8 Millimeter per second. Formula to convert 21 ft/s to mm/s is 21 * 304.8

Q: How many Feet per second in 21 Millimeters per second?

The answer is 0.068898 Feet per second

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