| 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 |
| kilometers per hour | 1,192.32 km/h | 2,384.64 km/h | 3,576.96 km/h | 4,769.28 km/h | 5,961.6 km/h | 7,153.92 km/h | 8,346.24 km/h | 9,538.56 km/h | 10,730.88 km/h | 11,923.2 km/h | 13,115.52 km/h | 14,307.84 km/h | 15,500.16 km/h | 16,692.48 km/h | 17,884.8 km/h | 19,077.12 km/h | 20,269.44 km/h | 21,461.76 km/h | 22,654.08 km/h | 23,846.4 km/h | 25,038.72 km/h | 26,231.04 km/h | 27,423.36 km/h | 28,615.68 km/h | 29 808 km/h | 31,000.32 km/h | 32,192.64 km/h | 33,384.96 km/h | 34,577.28 km/h | 35,769.6 km/h | 36,961.92 km/h | 38,154.24 km/h | 39,346.56 km/h | 40,538.88 km/h | 41,731.2 km/h | 42,923.52 km/h | 44,115.84 km/h | 45,308.16 km/h | 46,500.48 km/h | 47,692.8 km/h | 48,885.12 km/h | 50,077.44 km/h | 51,269.76 km/h | 52,462.08 km/h | 53,654.4 km/h | 54,846.72 km/h | 56,039.04 km/h | 57,231.36 km/h | 58,423.68 km/h | 59 616 km/h | 60,808.32 km/h | 62,000.64 km/h | 63,192.96 km/h | 64,385.28 km/h | 65,577.6 km/h | 66,769.92 km/h | 67,962.24 km/h | 69,154.56 km/h | 70,346.88 km/h | 71,539.2 km/h | 72,731.52 km/h | 73,923.84 km/h | 75,116.16 km/h | 76,308.48 km/h | 77,500.8 km/h | 78,693.12 km/h | 79,885.44 km/h | 81,077.76 km/h | 82,270.08 km/h | 83,462.4 km/h | 84,654.72 km/h | 85,847.04 km/h | 87,039.36 km/h | 88,231.68 km/h | 89 424 km/h | 90,616.32 km/h | 91,808.64 km/h | 93,000.96 km/h | 94,193.28 km/h | 95,385.6 km/h | 96,577.92 km/h | 97,770.24 km/h | 98,962.56 km/h | 100,154.88 km/h | 101,347.2 km/h | 102,539.52 km/h | 103,731.84 km/h | 104,924.16 km/h | 106,116.48 km/h | 107,308.8 km/h | 108,501.12 km/h | 109,693.44 km/h | 110,885.76 km/h | 112,078.08 km/h | 113,270.4 km/h | 114,462.72 km/h | 115,655.04 km/h | 116,847.36 km/h | 118,039.68 km/h | 119 232 km/h |
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) ≈ 1192.32 kilometers per hour | 6 speed of sounds (32 °F) ≈ 7153.92 kilometers per hour |
| 2 speed of sounds (32 °F) ≈ 2384.64 kilometers per hour | 7 speed of sounds (32 °F) ≈ 8346.24 kilometers per hour |
| 3 speed of sounds (32 °F) ≈ 3576.96 kilometers per hour | 8 speed of sounds (32 °F) ≈ 9538.56 kilometers per hour |
| 4 speed of sounds (32 °F) ≈ 4769.28 kilometers per hour | 9 speed of sounds (32 °F) ≈ 10730.88 kilometers per hour |
| 5 speed of sounds (32 °F) ≈ 5961.6 kilometers per hour | 10 speed of sounds (32 °F) ≈ 11923.2 kilometers per hour |
The kilometre per hour (American English: kilometer per hour) is a unit of speed, expressing the number of kilometres travelled in one hour.
| 1 kilometers per hour ≈ 0.00083870101986044 speed of sounds (32 °F) | 6 kilometers per hour ≈ 0.0050322061191626 speed of sounds (32 °F) |
| 2 kilometers per hour ≈ 0.0016774020397209 speed of sounds (32 °F) | 7 kilometers per hour ≈ 0.0058709071390231 speed of sounds (32 °F) |
| 3 kilometers per hour ≈ 0.0025161030595813 speed of sounds (32 °F) | 8 kilometers per hour ≈ 0.0067096081588835 speed of sounds (32 °F) |
| 4 kilometers per hour ≈ 0.0033548040794418 speed of sounds (32 °F) | 9 kilometers per hour ≈ 0.007548309178744 speed of sounds (32 °F) |
| 5 kilometers per hour ≈ 0.0041935050993022 speed of sounds (32 °F) | 10 kilometers per hour ≈ 0.0083870101986044 speed of sounds (32 °F) |
| 1 speed of sounds (32 °F) ≈ 1,192.32 kilometers per hour |
| 1 kilometers per hour ≈ 0.0008387 speed of sounds (32 °F) |