Speed Of Light to Knots Conversion

Enter the speed in speed of light below to get the value converted to knots.

Results in Knots:
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1 c = 582,749,918.35858 kn

How to Convert Speed Of Light to Knots

To convert a speed of light measurement to a knot measurement, multiply the speed by the conversion ratio.

Since one speed of light is equal to 582,749,918.35858 knots, you can use this simple formula to convert:

knots = speed of light × 582,749,918.35858

The speed in knots is equal to the speed of light multiplied by 582,749,918.35858.

For example, here's how to convert 5 speed of light to knots using the formula above.
5 c = (5 × 582,749,918.35858) = 2,913,749,591.7929 kn

Speed of light and knots are both units used to measure speed. Keep reading to learn more about each unit of measure.

Speed Of Light

The speed of light is equal to exactly 299,792,458 meters per second, or 670,616,629 miles per hour. The definition of the speed of light is actually derived from the most recent 1983 international definition of the meter.[1]

Speed of light can be abbreviated as c; for example, 1 speed of light can be written as 1 c.


One knot is equal to a speed of one nautical mile per hour,[2] 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.

Speed Of Light to Knot Conversion Table

Speed of light measurements converted to knots
Speed Of Light Knots
0.00000001 c 5.8275 kn
0.00000002 c 11.65 kn
0.00000003 c 17.48 kn
0.00000004 c 23.31 kn
0.00000005 c 29.14 kn
0.00000006 c 34.96 kn
0.00000007 c 40.79 kn
0.00000008 c 46.62 kn
0.00000009 c 52.45 kn
0.000000001 c 0.58275 kn
0.00000001 c 5.8275 kn
0.0000001 c 58.27 kn
0.000001 c 582.75 kn
0.00001 c 5,827 kn
0.0001 c 58,275 kn
0.001 c 582,750 kn
0.01 c 5,827,499 kn
0.1 c 58,274,992 kn
1 c 582,749,918 kn


  1. National Institute of Standards and Technology, SI Redefinition: Meter, https://www.nist.gov/si-redefinition/meter
  2. NASA, Knots Versus Miles per Hour, https://www.grc.nasa.gov/WWW/K-12/WindTunnel/Activities/knots_vs_mph.html

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