Speed of Sound to Knots (Mach → kn)
Formula
1 Mach = 666.7392369237468 knConversion Table
| Mach | kn |
|---|---|
| 0 | 0 |
| 1.0000 | 666.74 |
| 2.0000 | 1,333.5 |
| 3.0000 | 2,000.2 |
| 4.0000 | 2,667.0 |
| 5.0000 | 3,333.7 |
| 6.0000 | 4,000.4 |
| 7.0000 | 4,667.2 |
| 8.0000 | 5,333.9 |
| 9.0000 | 6,000.7 |
| 10.000 | 6,667.4 |
| 11.000 | 7,334.1 |
| 12.000 | 8,000.9 |
| 13.000 | 8,667.6 |
| 14.000 | 9,334.3 |
| 15.000 | 10,001 |
| 16.000 | 10,668 |
| 17.000 | 11,335 |
| 18.000 | 12,001 |
| 19.000 | 12,668 |
| Mach | kn |
|---|---|
| 20.000 | 13,335 |
| 21.000 | 14,002 |
| 22.000 | 14,668 |
| 23.000 | 15,335 |
| 24.000 | 16,002 |
| 25.000 | 16,668 |
| 26.000 | 17,335 |
| 27.000 | 18,002 |
| 28.000 | 18,669 |
| 29.000 | 19,335 |
| 30.000 | 20,002 |
| 31.000 | 20,669 |
| 32.000 | 21,336 |
| 33.000 | 22,002 |
| 34.000 | 22,669 |
| 35.000 | 23,336 |
| 36.000 | 24,003 |
| 37.000 | 24,669 |
| 38.000 | 25,336 |
| 39.000 | 26,003 |
| Mach | kn |
|---|---|
| 40.000 | 26,670 |
| 41.000 | 27,336 |
| 42.000 | 28,003 |
| 43.000 | 28,670 |
| 44.000 | 29,337 |
| 45.000 | 30,003 |
| 46.000 | 30,670 |
| 47.000 | 31,337 |
| 48.000 | 32,003 |
| 49.000 | 32,670 |
| 50.000 | 33,337 |
| 51.000 | 34,004 |
| 52.000 | 34,670 |
| 53.000 | 35,337 |
| 54.000 | 36,004 |
| 55.000 | 36,671 |
| 56.000 | 37,337 |
| 57.000 | 38,004 |
| 58.000 | 38,671 |
| 59.000 | 39,338 |
| Mach | kn |
|---|---|
| 60.000 | 40,004 |
| 61.000 | 40,671 |
| 62.000 | 41,338 |
| 63.000 | 42,005 |
| 64.000 | 42,671 |
| 65.000 | 43,338 |
| 66.000 | 44,005 |
| 67.000 | 44,672 |
| 68.000 | 45,338 |
| 69.000 | 46,005 |
| 70.000 | 46,672 |
| 71.000 | 47,338 |
| 72.000 | 48,005 |
| 73.000 | 48,672 |
| 74.000 | 49,339 |
| 75.000 | 50,005 |
| 76.000 | 50,672 |
| 77.000 | 51,339 |
| 78.000 | 52,006 |
| 79.000 | 52,672 |
Speed of Sound to Knots Conversion
Converting Speed of Sound (Mach) to Knots (kn) is a common speed conversion. 1 Mach equals 666.739237 kn. For example, 100 Mach is equal to 66,673.923692 kn.
Quick Reference Values
1 Mach = 666.739237 kn. 5 Mach = 3,333.696185 kn. 10 Mach = 6,667.392369 kn. 25 Mach = 16,668.480923 kn. 50 Mach = 33,336.961846 kn. 100 Mach = 66,673.923692 kn.
What is Speed of Sound?
Speed of Sound (Mach) is a unit of speed. The speed of sound is the distance traveled per unit time by a sound wave propagating through an elastic medium. In dry air at 20 °C, it is approximately 343 meters per second. This speed varies with temperature, humidity, and medium, but is standardized for reference conditions in acoustics and aerodynamics [iso-80000]. The speed of sound was first mathematically analyzed by Isaac Newton in the 17th century and later refined through experimental measurements. It became formally recognized in physics and engineering standards during the 20th century to aid in aviation and acoustic design [nist-cuu]. The speed of sound is used globally in fields such as meteorology, aerospace, and audio engineering. Aviation authorities and meteorological organizations rely on it to calculate sonic booms and sound propagation [iso-80000].
What is Knots?
Knots (kn) is a unit of speed. A knot is a unit of speed equal to one nautical mile per hour. It precisely corresponds to 1.852 kilometers per hour or 0.51444 meters per second. The knot is internationally recognized for maritime and aviation speed measurements and is defined using the international nautical mile of exactly 1852 meters [nist-si-guide]. The knot originated from the practice of measuring speed at sea using a 'log line' with knots tied at regular intervals. The term and unit were standardized with the adoption of the international nautical mile in 1929 by the International Hydrographic Organization [nist-si-guide]. Knots are the standard speed unit in global maritime navigation and aviation. Countries and organizations like the International Maritime Organization (IMO) and International Civil Aviation Organization (ICAO) mandate its use for vessel and aircraft speed reporting [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: speed of sound, sound speed, speed-of-sound, speedof sound, knotz, knotses, knotss, knotts. All of these refer to the Speed of Sound to Knots conversion.