speed of sound (32 °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 |
foot per second | 1,086.6141732 fps | 2,173.2283465 fps | 3,259.8425197 fps | 4,346.4566929 fps | 5,433.0708661 fps | 6,519.6850394 fps | 7,606.2992126 fps | 8,692.9133858 fps | 9,779.5275591 fps | 10,866.1417323 fps | 11,952.7559055 fps | 13,039.3700787 fps | 14,125.9842520 fps | 15,212.5984252 fps | 16,299.2125984 fps | 17,385.8267717 fps | 18,472.4409449 fps | 19,559.0551181 fps | 20,645.6692913 fps | 21,732.2834646 fps | 22,818.8976378 fps | 23,905.5118110 fps | 24,992.1259843 fps | 26,078.7401575 fps | 27,165.3543307 fps | 28,251.9685039 fps | 29,338.5826772 fps | 30,425.1968504 fps | 31,511.8110236 fps | 32,598.4251969 fps | 33,685.0393701 fps | 34,771.6535433 fps | 35,858.2677165 fps | 36,944.8818898 fps | 38,031.4960630 fps | 39,118.1102362 fps | 40,204.7244094 fps | 41,291.3385827 fps | 42,377.9527559 fps | 43,464.5669291 fps | 44,551.1811024 fps | 45,637.7952756 fps | 46,724.4094488 fps | 47,811.0236220 fps | 48,897.6377953 fps | 49,984.2519685 fps | 51,070.8661417 fps | 52,157.4803150 fps | 53,244.0944882 fps | 54,330.7086614 fps | 55,417.3228346 fps | 56,503.9370079 fps | 57,590.5511811 fps | 58,677.1653543 fps | 59,763.7795276 fps | 60,850.3937008 fps | 61,937.0078740 fps | 63,023.6220472 fps | 64,110.2362205 fps | 65,196.8503937 fps | 66,283.4645669 fps | 67,370.0787402 fps | 68,456.6929134 fps | 69,543.3070866 fps | 70,629.9212598 fps | 71,716.5354331 fps | 72,803.1496063 fps | 73,889.7637795 fps | 74,976.3779528 fps | 76,062.9921260 fps | 77,149.6062992 fps | 78,236.2204724 fps | 79,322.8346457 fps | 80,409.4488189 fps | 81,496.0629921 fps | 82,582.6771654 fps | 83,669.2913386 fps | 84,755.9055118 fps | 85,842.5196850 fps | 86,929.1338583 fps | 88,015.7480315 fps | 89,102.3622047 fps | 90,188.9763780 fps | 91,275.5905512 fps | 92,362.2047244 fps | 93,448.8188976 fps | 94,535.4330709 fps | 95,622.0472441 fps | 96,708.6614173 fps | 97,795.2755906 fps | 98,881.8897638 fps | 99,968.5039370 fps | 101,055.1181102 fps | 102,141.7322835 fps | 103,228.3464567 fps | 104,314.9606299 fps | 105,401.5748032 fps | 106,488.1889764 fps | 107,574.8031496 fps | 108,661.4173228 fps |
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.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
speed of sound (32 °F) | s | 225 to 1062 km/h (761–660 mph or 661–574 kn) | ≈ 340 to 295 m/s | Other Speed |
speed of sounds (32 °F) | feet per second | speed of sounds (32 °F) | feet per second |
---|---|---|---|
1 | ≈ 1086.6141732283 | 6 | ≈ 6519.6850393701 |
2 | ≈ 2173.2283464567 | 7 | ≈ 7606.2992125984 |
3 | ≈ 3259.842519685 | 8 | ≈ 8692.9133858268 |
4 | ≈ 4346.4566929134 | 9 | ≈ 9779.5275590551 |
5 | ≈ 5433.0708661417 | 10 | ≈ 10866.141732283 |
Foot per second is unit of speed, its symbol is fps. It equals to 0.3048 meter per second or 60 feet per minute. Plural name is feet / second.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot per second | fps | ≡ 1 ft/s | = 3.048×10−1 m/s | Imperial/US |
feet per second | speed of sounds (32 °F) | feet per second | speed of sounds (32 °F) |
---|---|---|---|
1 | ≈ 0.00092028985507246 | 6 | ≈ 0.0055217391304348 |
2 | ≈ 0.0018405797101449 | 7 | ≈ 0.0064420289855072 |
3 | ≈ 0.0027608695652174 | 8 | ≈ 0.0073623188405797 |
4 | ≈ 0.0036811594202899 | 9 | ≈ 0.0082826086956522 |
5 | ≈ 0.0046014492753623 | 10 | ≈ 0.0092028985507246 |
speed of sounds (32 °F) | feet per second |
---|---|
1 | ≈ 1,086.6141732 |
0.0009203 | ≈ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |