Speed conversion

Convert Knot to Speed of light

1 knot (kn) equals 0.000000001716 speed of light (c). Enter any value below to convert from kn to c.

Enter a value and choose units. Results update instantly.

1 kn = 0.0000000017 c

All Speed units

From 1 kn
UnitValue
Meter per second m/s 0.5144444444
Kilometer per hour km/h 1.852
Mile per hour mph 1.150779448
Knot kn 1
Foot per second ft/s 1.6878098571
Centimeter per second cm/s 51.4444444444
Speed of light c 0.0000000017
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Formula

kn to c conversion formula

Use this relationship for a direct conversion:

c = kn x 0.000000001716

Worked example

2 kn = 0.0000000034 c.

All listed factors are fixed by exact length and time definitions.

Quick reference

Knot to Speed of light table

Knot (kn)Speed of light (c)
0.010
0.10.0000000002
10.0000000017
20.0000000034
50.0000000086
100.0000000172
250.0000000429
500.0000000858
1000.0000001716
1,0000.000001716

From unit

About the knot

One nautical mile per hour.

Symbol: kn

To unit

About the speed of light

Exactly 299,792,458 meters per second in vacuum.

Symbol: c

Keep converting

Related conversions

Speed of light to KnotReverse this conversion Knot to Meter per secondkn to m/sKnot to Kilometer per hourkn to km/hKnot to Mile per hourkn to mphKnot to Foot per secondkn to ft/sKnot to Centimeter per secondkn to cm/s

Source

Conversion standard

Definitions are checked against BIPM SI Brochure and international unit definitions. Calculations use full internal precision before display rounding.

View the complete speed converter

Questions

kn to c FAQ

How do you convert knot to speed of light?

Use the formula c = kn x 0.000000001716. 1 knot (kn) equals 0.000000001716 speed of light (c).

Is the kn to c conversion exact?

Both unit definitions use exact factors. Only the displayed decimal may be rounded.