Conversion from Speed of sound to Kilometers per second (km/s) and vice versa

Updated on by Stefan Banse

Here you can convert the Speed unit Speed of sound into the unit Kilometers per second and vice versa you can convert Kilometers per second into Speed of sound. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result. With the following calculator you can also calculate any other Speed unit.

Info about "Speed of sound"

Definition: If an object travels at the speed of sound in air at 20 degrees Celsius for one second, it travels a distance of 343 meters per second. Actually, it is equivalent to 1.234,8 km/h.

The speed of sound is often illustrated by an example of a thunderstorm: if lightning strikes within 3 seconds of the thunder sound, then the thunderstorm is about 1 kilometer away. Another example, in a 100-meter sprint, the starting shot is fired directly next to the starting blocks. Imagine, if the start shot was fired at the finish line, it would take about 0.3 seconds of time to hear the shot in the start blocks.

Info about "Kilometers per second"

Kilometer per second is part of the metric system and it is derived from the standard unit of speed, meter per second (m/s). This is because both meters and seconds are defined as the basic units for length and time respectively.

This unit is defined as follows: An object moving at "1 km/s" per second will cover one kilometer. "km/s" is approved to use in the international system of units (SI).

Formula for the conversion of Speed of sound to Kilometers per second (km/s)

The calculation from Speed of sound to Kilometers per second shall be made using the following conversion formula:

 Conversion formula Speed of sound to Kilometers per second 

Determine the number of Kilometers per second from Speed of sound

Speed of sound × 0.343


Formula for the conversion of Kilometers per second (km/s) to Speed of sound

The calculation from Kilometers per second to Speed of sound shall be made using the following conversion formula:

 Conversion formula Kilometers per second to Speed of sound 

Determine the number of Speed of sound from Kilometers per second

Kilometers per second × 2.9154518950437


Overview table: How many Speed of sound are how many Kilometers per second?

Speed of sound Kilometers per second km/s
0.01  => 0.00343 km/s
0.02  => 0.00686 km/s
0.03  => 0.01029 km/s
0.04  => 0.01372 km/s
0.05  => 0.01715 km/s
0.06  => 0.02058 km/s
0.07  => 0.02401 km/s
0.08  => 0.02744 km/s
0.09  => 0.03087 km/s
0.10  => 0.03430 km/s
0.20  => 0.06860 km/s
0.30  => 0.10290 km/s
0.40  => 0.13720 km/s
0.50  => 0.17150 km/s
0.60  => 0.20580 km/s
0.70  => 0.24010 km/s
0.80  => 0.27440 km/s
0.90  => 0.30870 km/s
1  => 0.34300 km/s
2  => 0.68600 km/s
3  => 1.02900 km/s
4  => 1.37200 km/s
5  => 1.71500 km/s
6  => 2.05800 km/s
7  => 2.40100 km/s
8  => 2.74400 km/s
9  => 3.08700 km/s
10  => 3.43000 km/s
20  => 6.86000 km/s
30  => 10.29000 km/s
40  => 13.72000 km/s
50  => 17.15000 km/s
60  => 20.58000 km/s
70  => 24.01000 km/s
80  => 27.44000 km/s
90  => 30.87000 km/s
100  => 34.30000 km/s
200  => 68.60000 km/s
300  => 102.90000 km/s
400  => 137.20000 km/s
500  => 171.50000 km/s
600  => 205.80000 km/s
700  => 240.10000 km/s
800  => 274.40000 km/s
900  => 308.70000 km/s
1 000  => 343 km/s

Overview table: How many Kilometers per second are how many Speed of sound?

Kilometers per second km/sSpeed of sound
0.01 km/s => 0.02915 
0.02 km/s => 0.05830 
0.03 km/s => 0.08746 
0.04 km/s => 0.11661 
0.05 km/s => 0.14577 
0.06 km/s => 0.17492 
0.07 km/s => 0.20408 
0.08 km/s => 0.23323 
0.09 km/s => 0.26239 
0.10 km/s => 0.29154 
0.20 km/s => 0.58309 
0.30 km/s => 0.87463 
0.40 km/s => 1.16618 
0.50 km/s => 1.45772 
0.60 km/s => 1.74927 
0.70 km/s => 2.04081 
0.80 km/s => 2.33236 
0.90 km/s => 2.62390 
1 km/s => 2.91545 
2 km/s => 5.83090 
3 km/s => 8.74635 
4 km/s => 11.66180 
5 km/s => 14.57725 
6 km/s => 17.49271 
7 km/s => 20.40816 
8 km/s => 23.32361 
9 km/s => 26.23906 
10 km/s => 29.15451 
20 km/s => 58.30903 
30 km/s => 87.46355 
40 km/s => 116.61807 
50 km/s => 145.77259 
60 km/s => 174.92711 
70 km/s => 204.08163 
80 km/s => 233.23615 
90 km/s => 262.39067 
100 km/s => 291.54519 
200 km/s => 583.09037 
300 km/s => 874.63556 
400 km/s => 1 166.18075 
500 km/s => 1 457.72594 
600 km/s => 1 749.27113 
700 km/s => 2 040.81632 
800 km/s => 2 332.36151 
900 km/s => 2 623.90670 
1 000 km/s => 2 915.45189 

Source information

As source for the information in the "Units of speed" category, we have used in particular:

Last update on November 22, 2020

The pages of the "Units of speed" category were last editorially reviewed by Stefan Banse on November 22, 2020. They all correspond to the current status.

Previous changes on November 9, 2020

  • November 9, 2020: Publication of the Speed converter
  • Editorial revision of all texts in this category