| 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 |
| mile per second | 0.2131303 mps | 0.4262606 mps | 0.6393910 mps | 0.8525213 mps | 1.0656516 mps | 1.2787819 mps | 1.4919122 mps | 1.7050426 mps | 1.9181729 mps | 2.1313032 mps | 2.3444335 mps | 2.5575638 mps | 2.7706941 mps | 2.9838245 mps | 3.1969548 mps | 3.4100851 mps | 3.6232154 mps | 3.8363457 mps | 4.0494761 mps | 4.2626064 mps | 4.4757367 mps | 4.6888670 mps | 4.9019973 mps | 5.1151277 mps | 5.3282580 mps | 5.5413883 mps | 5.7545186 mps | 5.9676489 mps | 6.1807792 mps | 6.3939096 mps | 6.6070399 mps | 6.8201702 mps | 7.0333005 mps | 7.2464308 mps | 7.4595612 mps | 7.6726915 mps | 7.8858218 mps | 8.0989521 mps | 8.3120824 mps | 8.5252128 mps | 8.7383431 mps | 8.9514734 mps | 9.1646037 mps | 9.3777340 mps | 9.5908644 mps | 9.8039947 mps | 10.0171250 mps | 10.2302553 mps | 10.4433856 mps | 10.6565159 mps | 10.8696463 mps | 11.0827766 mps | 11.2959069 mps | 11.5090372 mps | 11.7221675 mps | 11.9352979 mps | 12.1484282 mps | 12.3615585 mps | 12.5746888 mps | 12.7878191 mps | 13.0009495 mps | 13.2140798 mps | 13.4272101 mps | 13.6403404 mps | 13.8534707 mps | 14.0666010 mps | 14.2797314 mps | 14.4928617 mps | 14.7059920 mps | 14.9191223 mps | 15.1322526 mps | 15.3453830 mps | 15.5585133 mps | 15.7716436 mps | 15.9847739 mps | 16.1979042 mps | 16.4110346 mps | 16.6241649 mps | 16.8372952 mps | 17.0504255 mps | 17.2635558 mps | 17.4766862 mps | 17.6898165 mps | 17.9029468 mps | 18.1160771 mps | 18.3292074 mps | 18.5423377 mps | 18.7554681 mps | 18.9685984 mps | 19.1817287 mps | 19.3948590 mps | 19.6079893 mps | 19.8211197 mps | 20.0342500 mps | 20.2473803 mps | 20.4605106 mps | 20.6736409 mps | 20.8867713 mps | 21.0999016 mps | 21.3130319 mps |
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) ≈ 0.21313031893741 miles per second | 6 speed of sounds (68 °F) ≈ 1.2787819136244 miles per second |
| 2 speed of sounds (68 °F) ≈ 0.42626063787481 miles per second | 7 speed of sounds (68 °F) ≈ 1.4919122325618 miles per second |
| 3 speed of sounds (68 °F) ≈ 0.63939095681222 miles per second | 8 speed of sounds (68 °F) ≈ 1.7050425514992 miles per second |
| 4 speed of sounds (68 °F) ≈ 0.85252127574962 miles per second | 9 speed of sounds (68 °F) ≈ 1.9181728704366 miles per second |
| 5 speed of sounds (68 °F) ≈ 1.065651594687 miles per second | 10 speed of sounds (68 °F) ≈ 2.1313031893741 miles per second |
Miles per second (abbreviated mph, MPS or mi/s) is an imperial and United States customary unit of speed expressing the number of statute miles covered in one second.
| 1 miles per second ≈ 4.6919650145773 speed of sounds (68 °F) | 6 miles per second ≈ 28.151790087464 speed of sounds (68 °F) |
| 2 miles per second ≈ 9.3839300291545 speed of sounds (68 °F) | 7 miles per second ≈ 32.843755102041 speed of sounds (68 °F) |
| 3 miles per second ≈ 14.075895043732 speed of sounds (68 °F) | 8 miles per second ≈ 37.535720116618 speed of sounds (68 °F) |
| 4 miles per second ≈ 18.767860058309 speed of sounds (68 °F) | 9 miles per second ≈ 42.227685131195 speed of sounds (68 °F) |
| 5 miles per second ≈ 23.459825072886 speed of sounds (68 °F) | 10 miles per second ≈ 46.919650145773 speed of sounds (68 °F) |
| 1 speed of sounds (68 °F) ≈ 0.2131303 miles per second |
| 1 miles per second ≈ 4.6919650 speed of sounds (68 °F) |