Convert 21 Miles per Hour to Knots

21 Miles per Hour (mph)
1 mph = 0.868976 kn
=
18.2485 Knots (kn)
1 kn = 1.15078 mph

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More information from the unit converter

Q: How many Miles per Hour in a Knot?

The answer is 1.15078 Knot

Q: How do you convert 21 Mile per Hour (mph) to Knot (kn)?

21 Mile per Hour is equal to 18.2485 Knot. Formula to convert 21 mph to kn is 21 / 1.150779448

Q: How many Miles per Hour in 21 Knots?

The answer is 24.1664 Miles per Hour