Kilometers per Second to Speed of Sound Converter

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


Result in Speed of Sound:

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1 km/s = 2.915452 sound

Do you want to convert speed of sound to kilometers per second?

How to Convert Kilometers per Second to Speed of Sound

To convert a measurement in kilometers per second to a measurement in speed of sound, multiply the speed by the following conversion ratio: 2.915452 speed of sound/kilometer per second.

Since one kilometer per second is equal to 2.915452 speed of sound, you can use this simple formula to convert:

speed of sound = kilometers per second × 2.915452

The speed in speed of sound is equal to the speed in kilometers per second multiplied by 2.915452.

For example, here's how to convert 5 kilometers per second to speed of sound using the formula above.
speed of sound = (5 km/s × 2.915452) = 14.577259 sound

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

What Are Kilometers per Second?

Kilometers per second are a measurement of speed expressing the distance traveled 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.

In the expressions of units, the slash, or solidus (/), is used to express a change in one or more units relative to a change in one or more other units.[1] For example, km/s is expressing a change in length or distance relative to a change in time.

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

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

Learn more about kilometers per second.

What Is the Speed of Sound?

The speed of sound is the distance a sound wave travels through an elastic medium. The speed of sound through air at 20 °C is equal to 343 meters per second,[2] or roughly 767 miles per hour.

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

Learn more about the speed of sound.

Kilometer per Second to Speed of Sound Conversion Table

Table showing various kilometer per second measurements converted to speed of sound.
Kilometers Per Second Speed Of Sound
1 km/s 2.9155 sound
2 km/s 5.8309 sound
3 km/s 8.7464 sound
4 km/s 11.66 sound
5 km/s 14.58 sound
6 km/s 17.49 sound
7 km/s 20.41 sound
8 km/s 23.32 sound
9 km/s 26.24 sound
10 km/s 29.15 sound
11 km/s 32.07 sound
12 km/s 34.99 sound
13 km/s 37.9 sound
14 km/s 40.82 sound
15 km/s 43.73 sound
16 km/s 46.65 sound
17 km/s 49.56 sound
18 km/s 52.48 sound
19 km/s 55.39 sound
20 km/s 58.31 sound
21 km/s 61.22 sound
22 km/s 64.14 sound
23 km/s 67.06 sound
24 km/s 69.97 sound
25 km/s 72.89 sound
26 km/s 75.8 sound
27 km/s 78.72 sound
28 km/s 81.63 sound
29 km/s 84.55 sound
30 km/s 87.46 sound
31 km/s 90.38 sound
32 km/s 93.29 sound
33 km/s 96.21 sound
34 km/s 99.13 sound
35 km/s 102.04 sound
36 km/s 104.96 sound
37 km/s 107.87 sound
38 km/s 110.79 sound
39 km/s 113.7 sound
40 km/s 116.62 sound


  1. National Institute of Standards and Technology, NIST Guide to the SI, Chapter 6: Rules and Style Conventions for Printing and Using Units,
  2. CK-12, Speed of Sound,

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