| 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 |
| speed of sound (32 °F) | 1.0356280 s | 2.0712560 s | 3.1068841 s | 4.1425121 s | 5.1781401 s | 6.2137681 s | 7.2493961 s | 8.2850242 s | 9.3206522 s | 10.3562802 s | 11.3919082 s | 12.4275362 s | 13.4631643 s | 14.4987923 s | 15.5344203 s | 16.5700483 s | 17.6056763 s | 18.6413043 s | 19.6769324 s | 20.7125604 s | 21.7481884 s | 22.7838164 s | 23.8194444 s | 24.8550725 s | 25.8907005 s | 26.9263285 s | 27.9619565 s | 28.9975845 s | 30.0332126 s | 31.0688406 s | 32.1044686 s | 33.1400966 s | 34.1757246 s | 35.2113527 s | 36.2469807 s | 37.2826087 s | 38.3182367 s | 39.3538647 s | 40.3894928 s | 41.4251208 s | 42.4607488 s | 43.4963768 s | 44.5320048 s | 45.5676329 s | 46.6032609 s | 47.6388889 s | 48.6745169 s | 49.7101449 s | 50.7457729 s | 51.7814010 s | 52.8170290 s | 53.8526570 s | 54.8882850 s | 55.9239130 s | 56.9595411 s | 57.9951691 s | 59.0307971 s | 60.0664251 s | 61.1020531 s | 62.1376812 s | 63.1733092 s | 64.2089372 s | 65.2445652 s | 66.2801932 s | 67.3158213 s | 68.3514493 s | 69.3870773 s | 70.4227053 s | 71.4583333 s | 72.4939614 s | 73.5295894 s | 74.5652174 s | 75.6008454 s | 76.6364734 s | 77.6721014 s | 78.7077295 s | 79.7433575 s | 80.7789855 s | 81.8146135 s | 82.8502415 s | 83.8858696 s | 84.9214976 s | 85.9571256 s | 86.9927536 s | 88.0283816 s | 89.0640097 s | 90.0996377 s | 91.1352657 s | 92.1708937 s | 93.2065217 s | 94.2421498 s | 95.2777778 s | 96.3134058 s | 97.3490338 s | 98.3846618 s | 99.4202899 s | 100.4559179 s | 101.4915459 s | 102.5271739 s | 103.5628019 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) ≈ 1.0356280193237 speed of sounds (32 °F) | 6 speed of sounds (68 °F) ≈ 6.213768115942 speed of sounds (32 °F) |
| 2 speed of sounds (68 °F) ≈ 2.0712560386473 speed of sounds (32 °F) | 7 speed of sounds (68 °F) ≈ 7.2493961352657 speed of sounds (32 °F) |
| 3 speed of sounds (68 °F) ≈ 3.106884057971 speed of sounds (32 °F) | 8 speed of sounds (68 °F) ≈ 8.2850241545894 speed of sounds (32 °F) |
| 4 speed of sounds (68 °F) ≈ 4.1425120772947 speed of sounds (32 °F) | 9 speed of sounds (68 °F) ≈ 9.320652173913 speed of sounds (32 °F) |
| 5 speed of sounds (68 °F) ≈ 5.1781400966184 speed of sounds (32 °F) | 10 speed of sounds (68 °F) ≈ 10.356280193237 speed of sounds (32 °F) |
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 (32 °F) ≈ 0.96559766763848 speed of sounds (68 °F) | 6 speed of sounds (32 °F) ≈ 5.7935860058309 speed of sounds (68 °F) |
| 2 speed of sounds (32 °F) ≈ 1.931195335277 speed of sounds (68 °F) | 7 speed of sounds (32 °F) ≈ 6.7591836734694 speed of sounds (68 °F) |
| 3 speed of sounds (32 °F) ≈ 2.8967930029155 speed of sounds (68 °F) | 8 speed of sounds (32 °F) ≈ 7.7247813411079 speed of sounds (68 °F) |
| 4 speed of sounds (32 °F) ≈ 3.8623906705539 speed of sounds (68 °F) | 9 speed of sounds (32 °F) ≈ 8.6903790087464 speed of sounds (68 °F) |
| 5 speed of sounds (32 °F) ≈ 4.8279883381924 speed of sounds (68 °F) | 10 speed of sounds (32 °F) ≈ 9.6559766763848 speed of sounds (68 °F) |
| 1 speed of sounds (68 °F) ≈ 1.0356280 speed of sounds (32 °F) |
| 1 speed of sounds (32 °F) ≈ 0.9655977 speed of sounds (68 °F) |