Convert Knots to Kilometers Per Second

Enter the speed in knots below to get the value converted to kilometers per second.

Results in Kilometers Per Second:
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1 kn = 0.000514 km/s

How to Convert Knots to Kilometers Per Second

Speedometers are used in vehicles to measure speed

To convert a knot measurement to a kilometer per second measurement, multiply the speed by the conversion ratio. One knot is equal to 0.000514 kilometers per second, so use this simple formula to convert:

kilometers per second = knots × 0.000514

The speed in kilometers per second is equal to the knots multiplied by 0.000514.

For example, here's how to convert 5 knots to kilometers per second using the formula above.
5 kn = (5 × 0.000514) = 0.002572 km/s

Knots and kilometers per second are both units used to measure speed. Keep reading to learn more about each unit of measure.


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.

Kilometers Per Second

Kilometers per second are a measurement of speed expressing the distance travelled in kilometers in one second.

The kilometer per second, or kilometre per second, is an SI unit of speed in the metric system. Kilometers per second can be abbreviated as km/s, and are also sometimes abbreviated as km/sec. For example, 1 kilometer per second can be written as 1 km/s or 1 km/sec.

Kilometers per second can be expressed using the formula:
vkm/s = dkmtsec

The velocity in kilometers per second is equal to the distance in kilometers divided by time in seconds.

Knot Measurements and Equivalent Kilometer Per Second Conversions

Common knot values converted to the equivalent kilometer per second value
Knots Kilometers Per Second
1 kn 0.000514 km/s
2 kn 0.001029 km/s
3 kn 0.001543 km/s
4 kn 0.002058 km/s
5 kn 0.002572 km/s
6 kn 0.003087 km/s
7 kn 0.003601 km/s
8 kn 0.004116 km/s
9 kn 0.00463 km/s
10 kn 0.005144 km/s
11 kn 0.005659 km/s
12 kn 0.006173 km/s
13 kn 0.006688 km/s
14 kn 0.007202 km/s
15 kn 0.007717 km/s
16 kn 0.008231 km/s
17 kn 0.008746 km/s
18 kn 0.00926 km/s
19 kn 0.009774 km/s
20 kn 0.010289 km/s
21 kn 0.010803 km/s
22 kn 0.011318 km/s
23 kn 0.011832 km/s
24 kn 0.012347 km/s
25 kn 0.012861 km/s
26 kn 0.013376 km/s
27 kn 0.01389 km/s
28 kn 0.014404 km/s
29 kn 0.014919 km/s
30 kn 0.015433 km/s
31 kn 0.015948 km/s
32 kn 0.016462 km/s
33 kn 0.016977 km/s
34 kn 0.017491 km/s
35 kn 0.018006 km/s
36 kn 0.01852 km/s
37 kn 0.019034 km/s
38 kn 0.019549 km/s
39 kn 0.020063 km/s
40 kn 0.020578 km/s

More Knot Speed Conversions

Convert to Mach
1 kn is equal to Mach 0.0015
Convert to Speed Of Sound
1 kn is equal to 0.0015 speed of sound
Convert to Speed Of Light
1 kn is equal to 1.716E-9 speed of light
Convert to Miles Per Hour
1 kn is equal to 1.150779 miles per hour
Convert to Feet Per Second
1 kn is equal to 1.68781 feet per second
Convert to Kilometers Per Hour
1 kn is equal to 1.852 kilometers per hour
Convert to Meters Per Second
1 kn is equal to 0.514444 meters per second
Convert to Centimeters Per Second
1 kn is equal to 51.444444 centimeters per second

Unit of Measurement Conversion Made Easy!

There are thousands of units of measure in use across the globe, and converting from one to another can be very difficult since each conversion requires a different formula to derive the result. Our unit of measurement conversion tools are meant to be dead easy. We break the mold of the typical dry and complicated experience. In addition to converting from one measurement to another, we provide the formula so you can see how the conversion is done, use it on you’re own calculator if you need to!

Convert units of length, weight, volume, and area between imperial and metric measures

Understanding the Metric System

The metric system makes it relatively easy to convert from one metric unit to another metric unit. The metric system uses a base unit, think meters or grams, and a prefix such as kilo or milli. The prefixes differ from the base units by differing powers of 10. So to convert within the metric system it’s usually a matter of multiplying or dividing by one of the powers of 10.

Here is a list of some of the common metric prefixes:

  • “kilo” – 1,000x larger
  • “hecto” – 100x larger
  • “deca” – 10x larger
  • “deci” – 10x smaller
  • “centi” – 100x smaller
  • “milli” – 1,000x smaller

There is a helpful mnemonic for remembering the prefixes: “King Henry Died Until Drinking Chocolate Milk.”
The u in Until refers to the base unit.