Knots Conversion

Speedometers are used in vehicles to measure speed

The knot is a unit used to measure speed. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about knots.

Knot Conversion Calculators

Choose a unit of speed to convert to.

Convert knots to Mach number
1 knot is equal to 0.0015 Mach number
Convert knots to speed of sound
1 knot is equal to 0.0015 speed of sound
Convert knots to speed of light
1 knot is equal to 1.716E-9 speed of light
Convert knots to miles per hour
1 knot is equal to 1.150779 miles per hour
Convert knots to feet per second
1 knot is equal to 1.68781 feet per second
Convert knots to kilometers per second
1 knot is equal to 0.000514 kilometers per second
Convert knots to kilometers per hour
1 knot is equal to 1.852 kilometers per hour
Convert knots to meters per second
1 knot is equal to 0.514444 meters per second
Convert knots to centimeters per second
1 knot is equal to 51.444444 centimeters per second

Knot Definition and Usage

One knot is equal to a speed of one nautical mile per hour, or one minute of latitude per hour.

Knots can be abbreviated as kn, and are also sometimes abbreviated as kt. For example, 1 knot can be written as 1 kn or 1 kt.

Uses

Because it's is based on the nautical mile, the knot is a convenient unit to use for navigation and meteorology. The unit is widely used to measure air-speed and the speed of maritime vessels.

Knots Measurement Conversion Table

Common knot values and equivalent imperial and metric speed measurements
knots Mach number speed of sound speed of light miles per hour feet per second kilometers per second kilometers per hour meters per second centimeters per second
1 kn Mach 0.0015 0.0015 sound 0.000000001716 c 1.150779 mph 1.68781 ft/s 0.000514 km/s 1.852 km/h 0.514444 m/s 51.444444 cm/s
2 kn Mach 0.003 0.003 sound 0.000000003432 c 2.301559 mph 3.37562 ft/s 0.001029 km/s 3.704 km/h 1.028889 m/s 102.888889 cm/s
3 kn Mach 0.0045 0.0045 sound 0.000000005148 c 3.452338 mph 5.06343 ft/s 0.001543 km/s 5.556 km/h 1.543333 m/s 154.333333 cm/s
4 kn Mach 0.005999 0.005999 sound 0.000000006864 c 4.603118 mph 6.751239 ft/s 0.002058 km/s 7.408 km/h 2.057778 m/s 205.777778 cm/s
5 kn Mach 0.007499 0.007499 sound 0.00000000858 c 5.753897 mph 8.439049 ft/s 0.002572 km/s 9.26 km/h 2.572222 m/s 257.222222 cm/s
6 kn Mach 0.008999 0.008999 sound 0.000000010296 c 6.904677 mph 10.126859 ft/s 0.003087 km/s 11.112 km/h 3.086667 m/s 308.666667 cm/s
7 kn Mach 0.010499 0.010499 sound 0.000000012012 c 8.055456 mph 11.814669 ft/s 0.003601 km/s 12.964 km/h 3.601111 m/s 360.111111 cm/s
8 kn Mach 0.011999 0.011999 sound 0.000000013728 c 9.206236 mph 13.502479 ft/s 0.004116 km/s 14.816 km/h 4.115556 m/s 411.555556 cm/s
9 kn Mach 0.013499 0.013499 sound 0.000000015444 c 10.357015 mph 15.190289 ft/s 0.00463 km/s 16.668 km/h 4.63 m/s 463 cm/s
10 kn Mach 0.014998 0.014998 sound 0.00000001716 c 11.507794 mph 16.878099 ft/s 0.005144 km/s 18.52 km/h 5.144444 m/s 514.444444 cm/s
11 kn Mach 0.016498 0.016498 sound 0.000000018876 c 12.658574 mph 18.565908 ft/s 0.005659 km/s 20.372 km/h 5.658889 m/s 565.888889 cm/s
12 kn Mach 0.017998 0.017998 sound 0.000000020592 c 13.809353 mph 20.253718 ft/s 0.006173 km/s 22.224 km/h 6.173333 m/s 617.333333 cm/s
13 kn Mach 0.019498 0.019498 sound 0.000000022308 c 14.960133 mph 21.941528 ft/s 0.006688 km/s 24.076 km/h 6.687778 m/s 668.777778 cm/s
14 kn Mach 0.020998 0.020998 sound 0.000000024024 c 16.110912 mph 23.629338 ft/s 0.007202 km/s 25.928 km/h 7.202222 m/s 720.222222 cm/s
15 kn Mach 0.022498 0.022498 sound 0.00000002574 c 17.261692 mph 25.317148 ft/s 0.007717 km/s 27.78 km/h 7.716667 m/s 771.666667 cm/s
16 kn Mach 0.023997 0.023997 sound 0.000000027456 c 18.412471 mph 27.004958 ft/s 0.008231 km/s 29.632 km/h 8.231111 m/s 823.111111 cm/s
17 kn Mach 0.025497 0.025497 sound 0.000000029172 c 19.563251 mph 28.692768 ft/s 0.008746 km/s 31.484 km/h 8.745556 m/s 874.555556 cm/s
18 kn Mach 0.026997 0.026997 sound 0.000000030888 c 20.71403 mph 30.380577 ft/s 0.00926 km/s 33.336 km/h 9.26 m/s 926 cm/s
19 kn Mach 0.028497 0.028497 sound 0.000000032604 c 21.86481 mph 32.068387 ft/s 0.009774 km/s 35.188 km/h 9.774444 m/s 977.444444 cm/s
20 kn Mach 0.029997 0.029997 sound 0.00000003432 c 23.015589 mph 33.756197 ft/s 0.010289 km/s 37.04 km/h 10.288889 m/s 1,029 cm/s