21 knots = 38.89 km/h
21 knots is equal to 38.89 kilometers per hour when rounded to two decimal places.
More precise conversion
21 knots = 38.892 km/h
How to convert 21 knots to km/h
Multiply the speed in knots by 1.852.
21 × 1.852 = 38.892 km/h
The primary result, 38.89 km/h, is rounded to two decimal places. The more precise value is exact.
Also equals
- Miles per hour
- 24.1663684085 mph
- Meters per second
- 10.803333 m/s
- Feet per second
- 35.444007 ft/s
- Centimeters per second
- 1080.3333 cm/s
Knots to KM/H converter
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About knots and km/h
A knot is one nautical mile per hour. One international nautical mile is exactly 1,852 meters. KM/H means kilometers per hour, so one knot equals exactly 1.852 km/h.