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 minute | 65,196.8503937 fpm | 130,393.7007874 fpm | 195,590.5511811 fpm | 260,787.4015748 fpm | 325,984.2519685 fpm | 391,181.1023622 fpm | 456,377.9527559 fpm | 521,574.8031496 fpm | 586,771.6535433 fpm | 651,968.5039370 fpm | 717,165.3543307 fpm | 782,362.2047244 fpm | 847,559.0551181 fpm | 912,755.9055118 fpm | 977,952.7559055 fpm | 1,043,149.6062992 fpm | 1,108,346.4566929 fpm | 1,173,543.3070866 fpm | 1,238,740.1574803 fpm | 1,303,937.007874 fpm | 1,369,133.8582677 fpm | 1,434,330.7086614 fpm | 1,499,527.5590551 fpm | 1,564,724.4094488 fpm | 1,629,921.2598425 fpm | 1,695,118.1102362 fpm | 1,760,314.9606299 fpm | 1,825,511.8110236 fpm | 1,890,708.6614173 fpm | 1,955,905.511811 fpm | 2,021,102.3622047 fpm | 2,086,299.2125984 fpm | 2,151,496.0629921 fpm | 2,216,692.9133858 fpm | 2,281,889.7637795 fpm | 2,347,086.6141732 fpm | 2,412,283.4645669 fpm | 2,477,480.3149606 fpm | 2,542,677.1653543 fpm | 2,607,874.015748 fpm | 2,673,070.8661417 fpm | 2,738,267.7165354 fpm | 2,803,464.5669291 fpm | 2,868,661.4173228 fpm | 2,933,858.2677165 fpm | 2,999,055.1181102 fpm | 3,064,251.9685039 fpm | 3,129,448.8188976 fpm | 3,194,645.6692913 fpm | 3,259,842.519685 fpm | 3,325,039.3700787 fpm | 3,390,236.2204724 fpm | 3,455,433.0708661 fpm | 3,520,629.9212598 fpm | 3,585,826.7716535 fpm | 3,651,023.6220472 fpm | 3,716,220.4724409 fpm | 3,781,417.3228346 fpm | 3,846,614.1732283 fpm | 3,911,811.023622 fpm | 3,977,007.8740157 fpm | 4,042,204.7244094 fpm | 4,107,401.5748031 fpm | 4,172,598.4251969 fpm | 4,237,795.2755906 fpm | 4,302,992.1259843 fpm | 4,368,188.976378 fpm | 4,433,385.8267717 fpm | 4,498,582.6771654 fpm | 4,563,779.5275591 fpm | 4,628,976.3779528 fpm | 4,694,173.2283465 fpm | 4,759,370.0787402 fpm | 4,824,566.9291339 fpm | 4,889,763.7795276 fpm | 4,954,960.6299213 fpm | 5,020,157.480315 fpm | 5,085,354.3307087 fpm | 5,150,551.1811024 fpm | 5,215,748.0314961 fpm | 5,280,944.8818898 fpm | 5,346,141.7322835 fpm | 5,411,338.5826772 fpm | 5,476,535.4330709 fpm | 5,541,732.2834646 fpm | 5,606,929.1338583 fpm | 5,672,125.984252 fpm | 5,737,322.8346457 fpm | 5,802,519.6850394 fpm | 5,867,716.5354331 fpm | 5,932,913.3858268 fpm | 5,998,110.2362205 fpm | 6,063,307.0866142 fpm | 6,128,503.9370079 fpm | 6,193,700.7874016 fpm | 6,258,897.6377953 fpm | 6,324,094.488189 fpm | 6,389,291.3385827 fpm | 6,454,488.1889764 fpm | 6,519,685.0393701 fpm |
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 minute | speed of sounds (32 °F) | feet per minute |
---|---|---|---|
1 | ≈ 65196.850393701 | 6 | ≈ 391181.1023622 |
2 | ≈ 130393.7007874 | 7 | ≈ 456377.95275591 |
3 | ≈ 195590.5511811 | 8 | ≈ 521574.80314961 |
4 | ≈ 260787.4015748 | 9 | ≈ 586771.65354331 |
5 | ≈ 325984.2519685 | 10 | ≈ 651968.50393701 |
Foot per minute is unit of speed. It equals 0.00508 meter per second or 60 feet per hour. Plural name is feet / minute.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot per minute | fpm | ≡ 1 ft/min | = 5.08×10−3 m/s | Imperial/US |
feet per minute | speed of sounds (32 °F) | feet per minute | speed of sounds (32 °F) |
---|---|---|---|
1 | ≈ 1.5338164251208E-5 | 6 | ≈ 9.2028985507246E-5 |
2 | ≈ 3.0676328502415E-5 | 7 | ≈ 0.00010736714975845 |
3 | ≈ 4.6014492753623E-5 | 8 | ≈ 0.00012270531400966 |
4 | ≈ 6.1352657004831E-5 | 9 | ≈ 0.00013804347826087 |
5 | ≈ 7.6690821256039E-5 | 10 | ≈ 0.00015338164251208 |
speed of sounds (32 °F) | feet per minute |
---|---|
1 | ≈ 65,196.8503937 |
1.5338164251208 × 10-5 | ≈ 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 …) |