Convert 21 Knots to Miles per Hour
How fast is 21 knots? What is 21 knots in miles per hour? 21 knots to mph conversion.
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21 Knots ≈
24.166368 Miles per Hour
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Result in Plain English
21 knots is equal to about 24.2 miles per hour.
In Scientific Notation
21 knots
= 2.1 x 101 knots
≈ 2.41664 x 101 miles per hour
Knots
A knot is a unit of speed, equal to one nautical mile per hour. Something traveling at one knot is going about 1.151 land miles per hour.Common abbreviations: kn, kt
Miles per Hour
A mile per hour is a unit of speed commonly used in the United States. It is equal to exactly 1.609344 kilometers per hour.Common abbreviations: mph, mi/h