| 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 hour | 3,911,811.023622 fph | 7,823,622.0472441 fph | 11,735,433.070866 fph | 15,647,244.094488 fph | 19,559,055.11811 fph | 23,470,866.141732 fph | 27,382,677.165354 fph | 31,294,488.188976 fph | 35,206,299.212598 fph | 39,118,110.23622 fph | 43,029,921.259843 fph | 46,941,732.283465 fph | 50,853,543.307087 fph | 54,765,354.330709 fph | 58,677,165.354331 fph | 62,588,976.377953 fph | 66,500,787.401575 fph | 70,412,598.425197 fph | 74,324,409.448819 fph | 78,236,220.472441 fph | 82,148,031.496063 fph | 86,059,842.519685 fph | 89,971,653.543307 fph | 93,883,464.566929 fph | 97,795,275.590551 fph | 101,707,086.61417 fph | 105,618,897.6378 fph | 109,530,708.66142 fph | 113,442,519.68504 fph | 117,354,330.70866 fph | 121,266,141.73228 fph | 125,177,952.75591 fph | 129,089,763.77953 fph | 133,001,574.80315 fph | 136,913,385.82677 fph | 140,825,196.85039 fph | 144,737,007.87402 fph | 148,648,818.89764 fph | 152,560,629.92126 fph | 156,472,440.94488 fph | 160,384,251.9685 fph | 164,296,062.99213 fph | 168,207,874.01575 fph | 172,119,685.03937 fph | 176,031,496.06299 fph | 179,943,307.08661 fph | 183,855,118.11024 fph | 187,766,929.13386 fph | 191,678,740.15748 fph | 195,590,551.1811 fph | 199,502,362.20472 fph | 203,414,173.22835 fph | 207,325,984.25197 fph | 211,237,795.27559 fph | 215,149,606.29921 fph | 219,061,417.32283 fph | 222,973,228.34646 fph | 226,885,039.37008 fph | 230,796,850.3937 fph | 234,708,661.41732 fph | 238,620,472.44094 fph | 242,532,283.46457 fph | 246,444,094.48819 fph | 250,355,905.51181 fph | 254,267,716.53543 fph | 258,179,527.55906 fph | 262,091,338.58268 fph | 266,003,149.6063 fph | 269,914,960.62992 fph | 273,826,771.65354 fph | 277,738,582.67717 fph | 281,650,393.70079 fph | 285,562,204.72441 fph | 289,474,015.74803 fph | 293,385,826.77165 fph | 297,297,637.79528 fph | 301,209,448.8189 fph | 305,121,259.84252 fph | 309,033,070.86614 fph | 312,944,881.88976 fph | 316,856,692.91339 fph | 320,768,503.93701 fph | 324,680,314.96063 fph | 328,592,125.98425 fph | 332,503,937.00787 fph | 336,415,748.0315 fph | 340,327,559.05512 fph | 344,239,370.07874 fph | 348,151,181.10236 fph | 352,062,992.12598 fph | 355,974,803.14961 fph | 359,886,614.17323 fph | 363,798,425.19685 fph | 367,710,236.22047 fph | 371,622,047.24409 fph | 375,533,858.26772 fph | 379,445,669.29134 fph | 383,357,480.31496 fph | 387,269,291.33858 fph | 391,181,102.3622 fph |
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) ≈ 3911811.023622 feet per hour | 6 speed of sounds (32 °F) ≈ 23470866.141732 feet per hour |
| 2 speed of sounds (32 °F) ≈ 7823622.0472441 feet per hour | 7 speed of sounds (32 °F) ≈ 27382677.165354 feet per hour |
| 3 speed of sounds (32 °F) ≈ 11735433.070866 feet per hour | 8 speed of sounds (32 °F) ≈ 31294488.188976 feet per hour |
| 4 speed of sounds (32 °F) ≈ 15647244.094488 feet per hour | 9 speed of sounds (32 °F) ≈ 35206299.212598 feet per hour |
| 5 speed of sounds (32 °F) ≈ 19559055.11811 feet per hour | 10 speed of sounds (32 °F) ≈ 39118110.23622 feet per hour |
Foot per hour is unit of speed or velocity. It equals 0.00008466 meter per second. Plural name is feet / hour.
| 1 feet per hour ≈ 2.5563607085346E-7 speed of sounds (32 °F) | 6 feet per hour ≈ 1.5338164251208E-6 speed of sounds (32 °F) |
| 2 feet per hour ≈ 5.1127214170692E-7 speed of sounds (32 °F) | 7 feet per hour ≈ 1.7894524959742E-6 speed of sounds (32 °F) |
| 3 feet per hour ≈ 7.6690821256039E-7 speed of sounds (32 °F) | 8 feet per hour ≈ 2.0450885668277E-6 speed of sounds (32 °F) |
| 4 feet per hour ≈ 1.0225442834138E-6 speed of sounds (32 °F) | 9 feet per hour ≈ 2.3007246376812E-6 speed of sounds (32 °F) |
| 5 feet per hour ≈ 1.2781803542673E-6 speed of sounds (32 °F) | 10 feet per hour ≈ 2.5563607085346E-6 speed of sounds (32 °F) |
| 1 speed of sounds (32 °F) ≈ 3,911,811.023622 feet per hour |
| 1 feet per hour ≈ 2.5563607085346 × 10-7 speed of sounds (32 °F) |