| speed of sound (68 °F) | 1 s | 2 s | 3 s | 4 s | 5 s | 6 s | 7 s | 8 s | 9 s | 10 s | 11 s | 12 s | 13 s | 14 s | 15 s | 16 s | 17 s | 18 s | 19 s | 20 s | 21 s | 22 s | 23 s | 24 s | 25 s | 26 s | 27 s | 28 s | 29 s | 30 s | 31 s | 32 s | 33 s | 34 s | 35 s | 36 s | 37 s | 38 s | 39 s | 40 s | 41 s | 42 s | 43 s | 44 s | 45 s | 46 s | 47 s | 48 s | 49 s | 50 s | 51 s | 52 s | 53 s | 54 s | 55 s | 56 s | 57 s | 58 s | 59 s | 60 s | 61 s | 62 s | 63 s | 64 s | 65 s | 66 s | 67 s | 68 s | 69 s | 70 s | 71 s | 72 s | 73 s | 74 s | 75 s | 76 s | 77 s | 78 s | 79 s | 80 s | 81 s | 82 s | 83 s | 84 s | 85 s | 86 s | 87 s | 88 s | 89 s | 90 s | 91 s | 92 s | 93 s | 94 s | 95 s | 96 s | 97 s | 98 s | 99 s | 100 s |
| meter per second | 343 m/s | 686 m/s | 1 029 m/s | 1 372 m/s | 1 715 m/s | 2 058 m/s | 2 401 m/s | 2 744 m/s | 3 087 m/s | 3 430 m/s | 3 773 m/s | 4 116 m/s | 4 459 m/s | 4 802 m/s | 5 145 m/s | 5 488 m/s | 5 831 m/s | 6 174 m/s | 6 517 m/s | 6 860 m/s | 7 203 m/s | 7 546 m/s | 7 889 m/s | 8 232 m/s | 8 575 m/s | 8 918 m/s | 9 261 m/s | 9 604 m/s | 9 947 m/s | 10 290 m/s | 10 633 m/s | 10 976 m/s | 11 319 m/s | 11 662 m/s | 12 005 m/s | 12 348 m/s | 12 691 m/s | 13 034 m/s | 13 377 m/s | 13 720 m/s | 14 063 m/s | 14 406 m/s | 14 749 m/s | 15 092 m/s | 15 435 m/s | 15 778 m/s | 16 121 m/s | 16 464 m/s | 16 807 m/s | 17 150 m/s | 17 493 m/s | 17 836 m/s | 18 179 m/s | 18 522 m/s | 18 865 m/s | 19 208 m/s | 19 551 m/s | 19 894 m/s | 20 237 m/s | 20 580 m/s | 20 923 m/s | 21 266 m/s | 21 609 m/s | 21 952 m/s | 22 295 m/s | 22 638 m/s | 22 981 m/s | 23 324 m/s | 23 667 m/s | 24 010 m/s | 24 353 m/s | 24 696 m/s | 25 039 m/s | 25 382 m/s | 25 725 m/s | 26 068 m/s | 26 411 m/s | 26 754 m/s | 27 097 m/s | 27 440 m/s | 27 783 m/s | 28 126 m/s | 28 469 m/s | 28 812 m/s | 29 155 m/s | 29 498 m/s | 29 841 m/s | 30 184 m/s | 30 527 m/s | 30 870 m/s | 31 213 m/s | 31 556 m/s | 31 899 m/s | 32 242 m/s | 32 585 m/s | 32 928 m/s | 33 271 m/s | 33 614 m/s | 33 957 m/s | 34 300 m/s |
The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. In dry air at 0 °C (32 °F), the speed of sound is 331.2 metres per second (1,087 ft/s; 1,192 km/h; 741 mph; 644 kn). At 20 °C (68 °F), the speed of sound is 343 metres per second (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or a kilometre in 2.91 s or a mile in 4.69 s.
| 1 speed of sounds (68 °F) ≈ 343 meters per second | 6 speed of sounds (68 °F) ≈ 2058 meters per second |
| 2 speed of sounds (68 °F) ≈ 686 meters per second | 7 speed of sounds (68 °F) ≈ 2401 meters per second |
| 3 speed of sounds (68 °F) ≈ 1029 meters per second | 8 speed of sounds (68 °F) ≈ 2744 meters per second |
| 4 speed of sounds (68 °F) ≈ 1372 meters per second | 9 speed of sounds (68 °F) ≈ 3087 meters per second |
| 5 speed of sounds (68 °F) ≈ 1715 meters per second | 10 speed of sounds (68 °F) ≈ 3430 meters per second |
Metre per second (American English: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.
| 1 meters per second ≈ 0.0029154518950437 speed of sounds (68 °F) | 6 meters per second ≈ 0.017492711370262 speed of sounds (68 °F) |
| 2 meters per second ≈ 0.0058309037900875 speed of sounds (68 °F) | 7 meters per second ≈ 0.020408163265306 speed of sounds (68 °F) |
| 3 meters per second ≈ 0.0087463556851312 speed of sounds (68 °F) | 8 meters per second ≈ 0.02332361516035 speed of sounds (68 °F) |
| 4 meters per second ≈ 0.011661807580175 speed of sounds (68 °F) | 9 meters per second ≈ 0.026239067055394 speed of sounds (68 °F) |
| 5 meters per second ≈ 0.014577259475219 speed of sounds (68 °F) | 10 meters per second ≈ 0.029154518950437 speed of sounds (68 °F) |
| 1 speed of sounds (68 °F) ≈ 343 meters per second |
| 1 meters per second ≈ 0.0029155 speed of sounds (68 °F) |