Speed of Sound to Kilometers per Second Converter

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


Result in Kilometers per Second:

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1 sound = 0.343 km/s

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

How to Convert Speed of Sound to Kilometers per Second

To convert a measurement in speed of sound to a measurement in kilometers per second, multiply the speed by the following conversion ratio: 0.343 kilometers per second/speed of sound.

Since one speed of sound is equal to 0.343 kilometers per second, you can use this simple formula to convert:

kilometers per second = speed of sound × 0.343

The speed in kilometers per second is equal to the speed in speed of sound multiplied by 0.343.

For example, here's how to convert 5 speed of sound to kilometers per second using the formula above.
kilometers per second = (5 sound × 0.343) = 1.715 km/s

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

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,[1] 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.

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.[2] 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.

Speed of Sound to Kilometer per Second Conversion Table

Table showing various speed of sound measurements converted to kilometers per second.
Speed Of Sound Kilometers Per Second
1 sound 0.343 km/s
2 sound 0.686 km/s
3 sound 1.029 km/s
4 sound 1.372 km/s
5 sound 1.715 km/s
6 sound 2.058 km/s
7 sound 2.401 km/s
8 sound 2.744 km/s
9 sound 3.087 km/s
10 sound 3.43 km/s
11 sound 3.773 km/s
12 sound 4.116 km/s
13 sound 4.459 km/s
14 sound 4.802 km/s
15 sound 5.145 km/s
16 sound 5.488 km/s
17 sound 5.831 km/s
18 sound 6.174 km/s
19 sound 6.517 km/s
20 sound 6.86 km/s
21 sound 7.203 km/s
22 sound 7.546 km/s
23 sound 7.889 km/s
24 sound 8.232 km/s
25 sound 8.575 km/s
26 sound 8.918 km/s
27 sound 9.261 km/s
28 sound 9.604 km/s
29 sound 9.947 km/s
30 sound 10.29 km/s
31 sound 10.63 km/s
32 sound 10.98 km/s
33 sound 11.32 km/s
34 sound 11.66 km/s
35 sound 12.01 km/s
36 sound 12.35 km/s
37 sound 12.69 km/s
38 sound 13.03 km/s
39 sound 13.38 km/s
40 sound 13.72 km/s


  1. CK-12, Speed of Sound, https://www.ck12.org/physics/speed-of-sound/lesson/Speed-of-Sound-MS-PS/
  2. National Institute of Standards and Technology, NIST Guide to the SI, Chapter 6: Rules and Style Conventions for Printing and Using Units, https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-6-rules-and-style-conventions-printing-and-using

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