How do you convert m/s to km/h?
Multiply the value in meters per second by 3.6. Unlike other speed conversions, this one rests on no imperial definition at all: it follows purely from the ratio between seconds and hours.
m/s = km/h ÷ 3.6
Common speeds in m/s and km/h
| 1 m/s (slow walk) | 3.6 km/h |
| 1.4 m/s (normal walk) | 5.0 km/h |
| 2 m/s (brisk walk) | 7.2 km/h |
| 5 m/s | 18 km/h |
| 10 m/s (fresh breeze) | 36 km/h |
| 12.3 m/s (Usain Bolt peak) | 44.3 km/h |
| 15 m/s (Beaufort force 7) | 54 km/h |
| 20 m/s | 72 km/h |
| 33 m/s (hurricane) | 118.8 km/h |
| 100 m/s | 360 km/h |
| 340 m/s (speed of sound at 15 °C) | 1224 km/h |
Show every value
- 1 m/s = 3.6 km/h
- 2 m/s = 7.2 km/h
- 3 m/s = 10.8 km/h
- 4 m/s = 14.4 km/h
- 5 m/s = 18 km/h
- 6 m/s = 21.6 km/h
- 7 m/s = 25.2 km/h
- 8 m/s = 28.8 km/h
- 9 m/s = 32.4 km/h
- 10 m/s = 36 km/h
- 11 m/s = 39.6 km/h
- 12 m/s = 43.2 km/h
- 13 m/s = 46.8 km/h
- 14 m/s = 50.4 km/h
- 15 m/s = 54 km/h
- 16 m/s = 57.6 km/h
- 17 m/s = 61.2 km/h
- 18 m/s = 64.8 km/h
- 19 m/s = 68.4 km/h
- 20 m/s = 72 km/h
- 21 m/s = 75.6 km/h
- 22 m/s = 79.2 km/h
- 23 m/s = 82.8 km/h
- 24 m/s = 86.4 km/h
- 25 m/s = 90 km/h
- 26 m/s = 93.6 km/h
- 27 m/s = 97.2 km/h
- 28 m/s = 100.8 km/h
- 29 m/s = 104.4 km/h
- 30 m/s = 108 km/h
- 31 m/s = 111.6 km/h
- 32 m/s = 115.2 km/h
- 33 m/s = 118.8 km/h
- 34 m/s = 122.4 km/h
- 35 m/s = 126 km/h
- 36 m/s = 129.6 km/h
- 37 m/s = 133.2 km/h
- 38 m/s = 136.8 km/h
- 39 m/s = 140.4 km/h
- 40 m/s = 144 km/h
- 41 m/s = 147.6 km/h
- 42 m/s = 151.2 km/h
- 43 m/s = 154.8 km/h
- 44 m/s = 158.4 km/h
- 45 m/s = 162 km/h
- 46 m/s = 165.6 km/h
- 47 m/s = 169.2 km/h
- 48 m/s = 172.8 km/h
- 49 m/s = 176.4 km/h
- 50 m/s = 180 km/h
- 51 m/s = 183.6 km/h
- 52 m/s = 187.2 km/h
- 53 m/s = 190.8 km/h
- 54 m/s = 194.4 km/h
- 55 m/s = 198 km/h
- 56 m/s = 201.6 km/h
- 57 m/s = 205.2 km/h
- 58 m/s = 208.8 km/h
- 59 m/s = 212.4 km/h
- 60 m/s = 216 km/h
- 61 m/s = 219.6 km/h
- 62 m/s = 223.2 km/h
- 63 m/s = 226.8 km/h
- 64 m/s = 230.4 km/h
- 65 m/s = 234 km/h
- 66 m/s = 237.6 km/h
- 67 m/s = 241.2 km/h
- 68 m/s = 244.8 km/h
- 69 m/s = 248.4 km/h
- 70 m/s = 252 km/h
- 71 m/s = 255.6 km/h
- 72 m/s = 259.2 km/h
- 73 m/s = 262.8 km/h
- 74 m/s = 266.4 km/h
- 75 m/s = 270 km/h
- 76 m/s = 273.6 km/h
- 77 m/s = 277.2 km/h
- 78 m/s = 280.8 km/h
- 79 m/s = 284.4 km/h
- 80 m/s = 288 km/h
- 81 m/s = 291.6 km/h
- 82 m/s = 295.2 km/h
- 83 m/s = 298.8 km/h
- 84 m/s = 302.4 km/h
- 85 m/s = 306 km/h
- 86 m/s = 309.6 km/h
- 87 m/s = 313.2 km/h
- 88 m/s = 316.8 km/h
- 89 m/s = 320.4 km/h
- 90 m/s = 324 km/h
- 91 m/s = 327.6 km/h
- 92 m/s = 331.2 km/h
- 93 m/s = 334.8 km/h
- 94 m/s = 338.4 km/h
- 95 m/s = 342 km/h
- 96 m/s = 345.6 km/h
- 97 m/s = 349.2 km/h
- 98 m/s = 352.8 km/h
- 99 m/s = 356.4 km/h
- 100 m/s = 360 km/h
- 125 m/s = 450 km/h
- 150 m/s = 540 km/h
- 175 m/s = 630 km/h
- 200 m/s = 720 km/h
- 225 m/s = 810 km/h
- 250 m/s = 900 km/h
- 275 m/s = 990 km/h
- 300 m/s = 1,080 km/h
- 325 m/s = 1,170 km/h
- 350 m/s = 1,260 km/h
- 375 m/s = 1,350 km/h
- 400 m/s = 1,440 km/h
- 425 m/s = 1,530 km/h
- 450 m/s = 1,620 km/h
- 475 m/s = 1,710 km/h
- 500 m/s = 1,800 km/h
- 550 m/s = 1,980 km/h
- 600 m/s = 2,160 km/h
- 650 m/s = 2,340 km/h
- 700 m/s = 2,520 km/h
- 750 m/s = 2,700 km/h
- 800 m/s = 2,880 km/h
- 850 m/s = 3,060 km/h
- 900 m/s = 3,240 km/h
- 950 m/s = 3,420 km/h
- 1,000 m/s = 3,600 km/h
- 1,500 m/s = 5,400 km/h
- 2,000 m/s = 7,200 km/h
- 2,500 m/s = 9,000 km/h
- 3,000 m/s = 10,800 km/h
- 3,500 m/s = 12,600 km/h
- 4,000 m/s = 14,400 km/h
- 4,500 m/s = 16,200 km/h
- 5,000 m/s = 18,000 km/h
- 5,500 m/s = 19,800 km/h
- 6,000 m/s = 21,600 km/h
- 6,500 m/s = 23,400 km/h
- 7,000 m/s = 25,200 km/h
- 7,500 m/s = 27,000 km/h
- 8,000 m/s = 28,800 km/h
- 8,500 m/s = 30,600 km/h
- 9,000 m/s = 32,400 km/h
- 9,500 m/s = 34,200 km/h
- 10,000 m/s = 36,000 km/h
The meter per second is the SI unit of speed. The factor 3.6 is exact by construction: 3,600 s/h ÷ 1,000 m/km. Methodology & sources.
Frequently asked questions
Why do meteorologists work in m/s?
Because it is the SI unit and the one forecasting models use. National weather services in many countries publish wind in m/s; France and the UK convert it to km/h or knots for the public.
How fast is a sprinter in m/s?
Usain Bolt covered his 100 m record at an average 10.44 m/s, or 37.6 km/h, with a measured peak of 12.3 m/s, or 44.3 km/h. A recreational runner sits closer to 3 or 4 m/s.
How do I rebuild the 3.6 factor without memorizing it?
An hour holds 3,600 seconds and a kilometer 1,000 meters. Travelling at 1 m/s therefore covers 3,600 meters in an hour, which is 3.6 km. The factor comes back in two steps.
Is a published wind speed an average or a peak?
An average. The World Meteorological Organization standard is the ten-minute mean wind measured ten metres above ground. Gusts are three-second peaks and run about 40% above the mean over open terrain: a mean of 15 m/s, 54 km/h, comes with gusts near 21 m/s, 76 km/h. The United States publishes a one-minute mean for tropical cyclones, which raises the figure for the same wind.
How do I turn a speed in m/s into a running pace?
Divide 16.67 by the speed to get minutes per kilometre. At 3.33 m/s, which is 12 km/h, the pace is five minutes per kilometre. An elite marathon runner holds about 5.8 m/s, 21 km/h, or 2 minutes 51 seconds per kilometre.