Convert Kilometers Per Second to Knots

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

Results in Knots:
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1 km/s = 1,943.844492 kn

How to Convert Kilometers Per Second to Knots

Speedometers are used in vehicles to measure speed

To convert a kilometer per second measurement to a knot measurement, multiply the speed by the conversion ratio. One kilometer per second is equal to 1,943.844492 knots, so use this simple formula to convert:

knots = kilometers per second × 1,943.844492

The speed in knots is equal to the kilometers per second multiplied by 1,943.844492.

For example, here's how to convert 5 kilometers per second to knots using the formula above.
5 km/s = (5 × 1,943.844492) = 9,719.222462 kn

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

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.


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.

Kilometer Per Second Measurements and Equivalent Knot Conversions

Common kilometer per second values converted to the equivalent knot value
Kilometers Per Second Knots
1 km/s 1,944 kn
2 km/s 3,888 kn
3 km/s 5,832 kn
4 km/s 7,775 kn
5 km/s 9,719 kn
6 km/s 11,663 kn
7 km/s 13,607 kn
8 km/s 15,551 kn
9 km/s 17,495 kn
10 km/s 19,438 kn
11 km/s 21,382 kn
12 km/s 23,326 kn
13 km/s 25,270 kn
14 km/s 27,214 kn
15 km/s 29,158 kn
16 km/s 31,102 kn
17 km/s 33,045 kn
18 km/s 34,989 kn
19 km/s 36,933 kn
20 km/s 38,877 kn
21 km/s 40,821 kn
22 km/s 42,765 kn
23 km/s 44,708 kn
24 km/s 46,652 kn
25 km/s 48,596 kn
26 km/s 50,540 kn
27 km/s 52,484 kn
28 km/s 54,428 kn
29 km/s 56,371 kn
30 km/s 58,315 kn
31 km/s 60,259 kn
32 km/s 62,203 kn
33 km/s 64,147 kn
34 km/s 66,091 kn
35 km/s 68,035 kn
36 km/s 69,978 kn
37 km/s 71,922 kn
38 km/s 73,866 kn
39 km/s 75,810 kn
40 km/s 77,754 kn

More Kilometer Per Second Speed Conversions

Convert to Mach
1 km/s is equal to Mach 2.915452
Convert to Speed Of Sound
1 km/s is equal to 2.915452 speed of sound
Convert to Speed Of Light
1 km/s is equal to 3.3356E-6 speed of light
Convert to Miles Per Hour
1 km/s is equal to 2,236.94 miles per hour
Convert to Feet Per Second
1 km/s is equal to 3,280.84 feet per second
Convert to Kilometers Per Hour
1 km/s is equal to 3,600 kilometers per hour
Convert to Meters Per Second
1 km/s is equal to 1,000 meters per second
Convert to Centimeters Per Second
1 km/s is equal to 100,000 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.