| yard per hour | 1 ydph | 2 ydph | 3 ydph | 4 ydph | 5 ydph | 6 ydph | 7 ydph | 8 ydph | 9 ydph | 10 ydph | 11 ydph | 12 ydph | 13 ydph | 14 ydph | 15 ydph | 16 ydph | 17 ydph | 18 ydph | 19 ydph | 20 ydph | 21 ydph | 22 ydph | 23 ydph | 24 ydph | 25 ydph | 26 ydph | 27 ydph | 28 ydph | 29 ydph | 30 ydph | 31 ydph | 32 ydph | 33 ydph | 34 ydph | 35 ydph | 36 ydph | 37 ydph | 38 ydph | 39 ydph | 40 ydph | 41 ydph | 42 ydph | 43 ydph | 44 ydph | 45 ydph | 46 ydph | 47 ydph | 48 ydph | 49 ydph | 50 ydph | 51 ydph | 52 ydph | 53 ydph | 54 ydph | 55 ydph | 56 ydph | 57 ydph | 58 ydph | 59 ydph | 60 ydph | 61 ydph | 62 ydph | 63 ydph | 64 ydph | 65 ydph | 66 ydph | 67 ydph | 68 ydph | 69 ydph | 70 ydph | 71 ydph | 72 ydph | 73 ydph | 74 ydph | 75 ydph | 76 ydph | 77 ydph | 78 ydph | 79 ydph | 80 ydph | 81 ydph | 82 ydph | 83 ydph | 84 ydph | 85 ydph | 86 ydph | 87 ydph | 88 ydph | 89 ydph | 90 ydph | 91 ydph | 92 ydph | 93 ydph | 94 ydph | 95 ydph | 96 ydph | 97 ydph | 98 ydph | 99 ydph | 100 ydph |
| speed of sound (68 °F) | 7.4052478134111 × 10-7 s | 1.4810495626822 × 10-6 s | 2.2215743440233 × 10-6 s | 2.9620991253644 × 10-6 s | 3.7026239067055 × 10-6 s | 4.4431486880466 × 10-6 s | 5.1836734693878 × 10-6 s | 5.9241982507289 × 10-6 s | 6.66472303207 × 10-6 s | 7.4052478134111 × 10-6 s | 8.1457725947522 × 10-6 s | 8.8862973760933 × 10-6 s | 9.6268221574344 × 10-6 s | 1.0367346938776 × 10-5 s | 1.1107871720117 × 10-5 s | 1.1848396501458 × 10-5 s | 1.2588921282799 × 10-5 s | 1.332944606414 × 10-5 s | 1.4069970845481 × 10-5 s | 1.4810495626822 × 10-5 s | 1.5551020408163 × 10-5 s | 1.6291545189504 × 10-5 s | 1.7032069970845 × 10-5 s | 1.7772594752187 × 10-5 s | 1.8513119533528 × 10-5 s | 1.9253644314869 × 10-5 s | 1.999416909621 × 10-5 s | 2.0734693877551 × 10-5 s | 2.1475218658892 × 10-5 s | 2.2215743440233 × 10-5 s | 2.2956268221574 × 10-5 s | 2.3696793002915 × 10-5 s | 2.4437317784257 × 10-5 s | 2.5177842565598 × 10-5 s | 2.5918367346939 × 10-5 s | 2.665889212828 × 10-5 s | 2.7399416909621 × 10-5 s | 2.8139941690962 × 10-5 s | 2.8880466472303 × 10-5 s | 2.9620991253644 × 10-5 s | 3.0361516034985 × 10-5 s | 3.1102040816327 × 10-5 s | 3.1842565597668 × 10-5 s | 3.2583090379009 × 10-5 s | 3.332361516035 × 10-5 s | 3.4064139941691 × 10-5 s | 3.4804664723032 × 10-5 s | 3.5545189504373 × 10-5 s | 3.6285714285714 × 10-5 s | 3.7026239067055 × 10-5 s | 3.7766763848397 × 10-5 s | 3.8507288629738 × 10-5 s | 3.9247813411079 × 10-5 s | 3.998833819242 × 10-5 s | 4.0728862973761 × 10-5 s | 4.1469387755102 × 10-5 s | 4.2209912536443 × 10-5 s | 4.2950437317784 × 10-5 s | 4.3690962099125 × 10-5 s | 4.4431486880466 × 10-5 s | 4.5172011661808 × 10-5 s | 4.5912536443149 × 10-5 s | 4.665306122449 × 10-5 s | 4.7393586005831 × 10-5 s | 4.8134110787172 × 10-5 s | 4.8874635568513 × 10-5 s | 4.9615160349854 × 10-5 s | 5.0355685131195 × 10-5 s | 5.1096209912536 × 10-5 s | 5.1836734693878 × 10-5 s | 5.2577259475219 × 10-5 s | 5.331778425656 × 10-5 s | 5.4058309037901 × 10-5 s | 5.4798833819242 × 10-5 s | 5.5539358600583 × 10-5 s | 5.6279883381924 × 10-5 s | 5.7020408163265 × 10-5 s | 5.7760932944606 × 10-5 s | 5.8501457725948 × 10-5 s | 5.9241982507289 × 10-5 s | 5.998250728863 × 10-5 s | 6.0723032069971 × 10-5 s | 6.1463556851312 × 10-5 s | 6.2204081632653 × 10-5 s | 6.2944606413994 × 10-5 s | 6.3685131195335 × 10-5 s | 6.4425655976676 × 10-5 s | 6.5166180758017 × 10-5 s | 6.5906705539359 × 10-5 s | 6.66472303207 × 10-5 s | 6.7387755102041 × 10-5 s | 6.8128279883382 × 10-5 s | 6.8868804664723 × 10-5 s | 6.9609329446064 × 10-5 s | 7.0349854227405 × 10-5 s | 7.1090379008746 × 10-5 s | 7.1830903790087 × 10-5 s | 7.2571428571429 × 10-5 s | 7.331195335277 × 10-5 s | 7.4052478134111 × 10-5 s |
Yards per hour (abbreviated mph, YDPH or yd/h) is an imperial and United States customary unit of speed expressing the number of statute yards covered in one hour.
| 1 yards per hour ≈ 7.4052478134111E-7 speed of sounds (68 °F) | 6 yards per hour ≈ 4.4431486880466E-6 speed of sounds (68 °F) |
| 2 yards per hour ≈ 1.4810495626822E-6 speed of sounds (68 °F) | 7 yards per hour ≈ 5.1836734693878E-6 speed of sounds (68 °F) |
| 3 yards per hour ≈ 2.2215743440233E-6 speed of sounds (68 °F) | 8 yards per hour ≈ 5.9241982507289E-6 speed of sounds (68 °F) |
| 4 yards per hour ≈ 2.9620991253644E-6 speed of sounds (68 °F) | 9 yards per hour ≈ 6.66472303207E-6 speed of sounds (68 °F) |
| 5 yards per hour ≈ 3.7026239067055E-6 speed of sounds (68 °F) | 10 yards per hour ≈ 7.4052478134111E-6 speed of sounds (68 °F) |
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) ≈ 1350393.7007874 yards per hour | 6 speed of sounds (68 °F) ≈ 8102362.2047244 yards per hour |
| 2 speed of sounds (68 °F) ≈ 2700787.4015748 yards per hour | 7 speed of sounds (68 °F) ≈ 9452755.9055118 yards per hour |
| 3 speed of sounds (68 °F) ≈ 4051181.1023622 yards per hour | 8 speed of sounds (68 °F) ≈ 10803149.606299 yards per hour |
| 4 speed of sounds (68 °F) ≈ 5401574.8031496 yards per hour | 9 speed of sounds (68 °F) ≈ 12153543.307087 yards per hour |
| 5 speed of sounds (68 °F) ≈ 6751968.503937 yards per hour | 10 speed of sounds (68 °F) ≈ 13503937.007874 yards per hour |
| 1 yards per hour ≈ 7.4052478134111 × 10-7 speed of sounds (68 °F) |
| 1 speed of sounds (68 °F) ≈ 1,350,393.7007874 yards per hour |