メートル毎秒をキロメートル毎時に換算するには？
メートル毎秒の値に 3.6 を掛けます。ほかの速さの換算と違い、これはヤード・ポンド法の定義に一切よりません。秒と時間の比だけから決まります。
km/h = m/s × 3.6m/s = km/h ÷ 3.6
この二つの単位が使われる場所
メートル毎秒は国際単位系の速度の単位ですが、道路標識には一つも現れません。物理と風速の観測のなかで生きています。 キロメートル毎時はほぼすべての国の道路標識に現れ、英語圏以外では自動車の速度計が示す単位です。 3.6 という係数が物理と速度計を隔てます。100 メートルの記録 9.58 秒は 10.44 m/s であり、速度取締機なら 37.6 km/h と表示する速さです。
よく使う速さのメートル毎秒とキロメートル毎時
| 1 m/s（ゆっくり歩く） | 3.6 km/h |
| 1.4 m/s（普通に歩く） | 5.0 km/h |
| 2 m/s（速歩き） | 7.2 km/h |
| 5 m/s | 18 km/h |
| 10 m/s（やや強い風） | 36 km/h |
| 12.3 m/s（ウサイン・ボルトの最高速度） | 44.3 km/h |
| 15 m/s（ビューフォート風力7） | 54 km/h |
| 20 m/s | 72 km/h |
| 33 m/s（猛烈な風） | 118.8 km/h |
| 100 m/s | 360 km/h |
| 340 m/s（15 °Cの音速） | 1224 km/h |
すべての値を表示
- 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
- 101 m/s = 363.6 km/h
- 102 m/s = 367.2 km/h
- 103 m/s = 370.8 km/h
- 104 m/s = 374.4 km/h
- 105 m/s = 378 km/h
- 106 m/s = 381.6 km/h
- 107 m/s = 385.2 km/h
- 108 m/s = 388.8 km/h
- 109 m/s = 392.4 km/h
- 110 m/s = 396 km/h
- 111 m/s = 399.6 km/h
- 112 m/s = 403.2 km/h
- 113 m/s = 406.8 km/h
- 114 m/s = 410.4 km/h
- 115 m/s = 414 km/h
- 116 m/s = 417.6 km/h
- 117 m/s = 421.2 km/h
- 118 m/s = 424.8 km/h
- 119 m/s = 428.4 km/h
- 120 m/s = 432 km/h
- 121 m/s = 435.6 km/h
- 122 m/s = 439.2 km/h
- 123 m/s = 442.8 km/h
- 124 m/s = 446.4 km/h
- 125 m/s = 450 km/h
- 126 m/s = 453.6 km/h
- 127 m/s = 457.2 km/h
- 128 m/s = 460.8 km/h
- 129 m/s = 464.4 km/h
- 130 m/s = 468 km/h
- 131 m/s = 471.6 km/h
- 132 m/s = 475.2 km/h
- 133 m/s = 478.8 km/h
- 134 m/s = 482.4 km/h
- 135 m/s = 486 km/h
- 136 m/s = 489.6 km/h
- 137 m/s = 493.2 km/h
- 138 m/s = 496.8 km/h
- 139 m/s = 500.4 km/h
- 140 m/s = 504 km/h
- 141 m/s = 507.6 km/h
- 142 m/s = 511.2 km/h
- 143 m/s = 514.8 km/h
- 144 m/s = 518.4 km/h
- 145 m/s = 522 km/h
- 146 m/s = 525.6 km/h
- 147 m/s = 529.2 km/h
- 148 m/s = 532.8 km/h
- 149 m/s = 536.4 km/h
- 150 m/s = 540 km/h
- 151 m/s = 543.6 km/h
- 152 m/s = 547.2 km/h
- 153 m/s = 550.8 km/h
- 154 m/s = 554.4 km/h
- 155 m/s = 558 km/h
- 156 m/s = 561.6 km/h
- 157 m/s = 565.2 km/h
- 158 m/s = 568.8 km/h
- 159 m/s = 572.4 km/h
- 160 m/s = 576 km/h
- 161 m/s = 579.6 km/h
- 162 m/s = 583.2 km/h
- 163 m/s = 586.8 km/h
- 164 m/s = 590.4 km/h
- 165 m/s = 594 km/h
- 166 m/s = 597.6 km/h
- 167 m/s = 601.2 km/h
- 168 m/s = 604.8 km/h
- 169 m/s = 608.4 km/h
- 170 m/s = 612 km/h
- 171 m/s = 615.6 km/h
- 172 m/s = 619.2 km/h
- 173 m/s = 622.8 km/h
- 174 m/s = 626.4 km/h
- 175 m/s = 630 km/h
- 176 m/s = 633.6 km/h
- 177 m/s = 637.2 km/h
- 178 m/s = 640.8 km/h
- 179 m/s = 644.4 km/h
- 180 m/s = 648 km/h
- 181 m/s = 651.6 km/h
- 182 m/s = 655.2 km/h
- 183 m/s = 658.8 km/h
- 184 m/s = 662.4 km/h
- 185 m/s = 666 km/h
- 186 m/s = 669.6 km/h
- 187 m/s = 673.2 km/h
- 188 m/s = 676.8 km/h
- 189 m/s = 680.4 km/h
- 190 m/s = 684 km/h
- 191 m/s = 687.6 km/h
- 192 m/s = 691.2 km/h
- 193 m/s = 694.8 km/h
- 194 m/s = 698.4 km/h
- 195 m/s = 702 km/h
- 196 m/s = 705.6 km/h
- 197 m/s = 709.2 km/h
- 198 m/s = 712.8 km/h
- 199 m/s = 716.4 km/h
- 200 m/s = 720 km/h
- 205 m/s = 738 km/h
- 210 m/s = 756 km/h
- 215 m/s = 774 km/h
- 220 m/s = 792 km/h
- 225 m/s = 810 km/h
- 230 m/s = 828 km/h
- 235 m/s = 846 km/h
- 240 m/s = 864 km/h
- 245 m/s = 882 km/h
- 250 m/s = 900 km/h
- 255 m/s = 918 km/h
- 260 m/s = 936 km/h
- 265 m/s = 954 km/h
- 270 m/s = 972 km/h
- 275 m/s = 990 km/h
- 280 m/s = 1,008 km/h
- 285 m/s = 1,026 km/h
- 290 m/s = 1,044 km/h
- 295 m/s = 1,062 km/h
- 300 m/s = 1,080 km/h
- 305 m/s = 1,098 km/h
- 310 m/s = 1,116 km/h
- 315 m/s = 1,134 km/h
- 320 m/s = 1,152 km/h
- 325 m/s = 1,170 km/h
- 330 m/s = 1,188 km/h
- 335 m/s = 1,206 km/h
- 340 m/s = 1,224 km/h
- 345 m/s = 1,242 km/h
- 350 m/s = 1,260 km/h
- 355 m/s = 1,278 km/h
- 360 m/s = 1,296 km/h
- 365 m/s = 1,314 km/h
- 370 m/s = 1,332 km/h
- 375 m/s = 1,350 km/h
- 380 m/s = 1,368 km/h
- 385 m/s = 1,386 km/h
- 390 m/s = 1,404 km/h
- 395 m/s = 1,422 km/h
- 400 m/s = 1,440 km/h
- 405 m/s = 1,458 km/h
- 410 m/s = 1,476 km/h
- 415 m/s = 1,494 km/h
- 420 m/s = 1,512 km/h
- 425 m/s = 1,530 km/h
- 430 m/s = 1,548 km/h
- 435 m/s = 1,566 km/h
- 440 m/s = 1,584 km/h
- 445 m/s = 1,602 km/h
- 450 m/s = 1,620 km/h
- 455 m/s = 1,638 km/h
- 460 m/s = 1,656 km/h
- 465 m/s = 1,674 km/h
- 470 m/s = 1,692 km/h
- 475 m/s = 1,710 km/h
- 480 m/s = 1,728 km/h
- 485 m/s = 1,746 km/h
- 490 m/s = 1,764 km/h
- 495 m/s = 1,782 km/h
- 500 m/s = 1,800 km/h
- 510 m/s = 1,836 km/h
- 520 m/s = 1,872 km/h
- 530 m/s = 1,908 km/h
- 540 m/s = 1,944 km/h
- 550 m/s = 1,980 km/h
- 560 m/s = 2,016 km/h
- 570 m/s = 2,052 km/h
- 580 m/s = 2,088 km/h
- 590 m/s = 2,124 km/h
- 600 m/s = 2,160 km/h
- 610 m/s = 2,196 km/h
- 620 m/s = 2,232 km/h
- 630 m/s = 2,268 km/h
- 640 m/s = 2,304 km/h
- 650 m/s = 2,340 km/h
- 660 m/s = 2,376 km/h
- 670 m/s = 2,412 km/h
- 680 m/s = 2,448 km/h
- 690 m/s = 2,484 km/h
- 700 m/s = 2,520 km/h
- 710 m/s = 2,556 km/h
- 720 m/s = 2,592 km/h
- 730 m/s = 2,628 km/h
- 740 m/s = 2,664 km/h
- 750 m/s = 2,700 km/h
- 760 m/s = 2,736 km/h
- 770 m/s = 2,772 km/h
- 780 m/s = 2,808 km/h
- 790 m/s = 2,844 km/h
- 800 m/s = 2,880 km/h
- 810 m/s = 2,916 km/h
- 820 m/s = 2,952 km/h
- 830 m/s = 2,988 km/h
- 840 m/s = 3,024 km/h
- 850 m/s = 3,060 km/h
- 860 m/s = 3,096 km/h
- 870 m/s = 3,132 km/h
- 880 m/s = 3,168 km/h
- 890 m/s = 3,204 km/h
- 900 m/s = 3,240 km/h
- 910 m/s = 3,276 km/h
- 920 m/s = 3,312 km/h
- 930 m/s = 3,348 km/h
- 940 m/s = 3,384 km/h
- 950 m/s = 3,420 km/h
- 960 m/s = 3,456 km/h
- 970 m/s = 3,492 km/h
- 980 m/s = 3,528 km/h
- 990 m/s = 3,564 km/h
- 1,000 m/s = 3,600 km/h
- 1,025 m/s = 3,690 km/h
- 1,050 m/s = 3,780 km/h
- 1,075 m/s = 3,870 km/h
- 1,100 m/s = 3,960 km/h
- 1,125 m/s = 4,050 km/h
- 1,150 m/s = 4,140 km/h
- 1,175 m/s = 4,230 km/h
- 1,200 m/s = 4,320 km/h
- 1,225 m/s = 4,410 km/h
- 1,250 m/s = 4,500 km/h
- 1,275 m/s = 4,590 km/h
- 1,300 m/s = 4,680 km/h
- 1,325 m/s = 4,770 km/h
- 1,350 m/s = 4,860 km/h
- 1,375 m/s = 4,950 km/h
- 1,400 m/s = 5,040 km/h
- 1,425 m/s = 5,130 km/h
- 1,450 m/s = 5,220 km/h
- 1,475 m/s = 5,310 km/h
- 1,500 m/s = 5,400 km/h
- 1,525 m/s = 5,490 km/h
- 1,550 m/s = 5,580 km/h
- 1,575 m/s = 5,670 km/h
- 1,600 m/s = 5,760 km/h
- 1,625 m/s = 5,850 km/h
- 1,650 m/s = 5,940 km/h
- 1,675 m/s = 6,030 km/h
- 1,700 m/s = 6,120 km/h
- 1,725 m/s = 6,210 km/h
- 1,750 m/s = 6,300 km/h
- 1,775 m/s = 6,390 km/h
- 1,800 m/s = 6,480 km/h
- 1,825 m/s = 6,570 km/h
- 1,850 m/s = 6,660 km/h
- 1,875 m/s = 6,750 km/h
- 1,900 m/s = 6,840 km/h
- 1,925 m/s = 6,930 km/h
- 1,950 m/s = 7,020 km/h
- 1,975 m/s = 7,110 km/h
- 2,000 m/s = 7,200 km/h
- 2,050 m/s = 7,380 km/h
- 2,100 m/s = 7,560 km/h
- 2,150 m/s = 7,740 km/h
- 2,200 m/s = 7,920 km/h
- 2,250 m/s = 8,100 km/h
- 2,300 m/s = 8,280 km/h
- 2,350 m/s = 8,460 km/h
- 2,400 m/s = 8,640 km/h
- 2,450 m/s = 8,820 km/h
- 2,500 m/s = 9,000 km/h
- 2,550 m/s = 9,180 km/h
- 2,600 m/s = 9,360 km/h
- 2,650 m/s = 9,540 km/h
- 2,700 m/s = 9,720 km/h
- 2,750 m/s = 9,900 km/h
- 2,800 m/s = 10,080 km/h
- 2,850 m/s = 10,260 km/h
- 2,900 m/s = 10,440 km/h
- 2,950 m/s = 10,620 km/h
- 3,000 m/s = 10,800 km/h
- 3,050 m/s = 10,980 km/h
- 3,100 m/s = 11,160 km/h
- 3,150 m/s = 11,340 km/h
- 3,200 m/s = 11,520 km/h
- 3,250 m/s = 11,700 km/h
- 3,300 m/s = 11,880 km/h
- 3,350 m/s = 12,060 km/h
- 3,400 m/s = 12,240 km/h
- 3,450 m/s = 12,420 km/h
- 3,500 m/s = 12,600 km/h
- 3,550 m/s = 12,780 km/h
- 3,600 m/s = 12,960 km/h
- 3,650 m/s = 13,140 km/h
- 3,700 m/s = 13,320 km/h
- 3,750 m/s = 13,500 km/h
- 3,800 m/s = 13,680 km/h
- 3,850 m/s = 13,860 km/h
- 3,900 m/s = 14,040 km/h
- 3,950 m/s = 14,220 km/h
- 4,000 m/s = 14,400 km/h
- 4,050 m/s = 14,580 km/h
- 4,100 m/s = 14,760 km/h
- 4,150 m/s = 14,940 km/h
- 4,200 m/s = 15,120 km/h
- 4,250 m/s = 15,300 km/h
- 4,300 m/s = 15,480 km/h
- 4,350 m/s = 15,660 km/h
- 4,400 m/s = 15,840 km/h
- 4,450 m/s = 16,020 km/h
- 4,500 m/s = 16,200 km/h
- 4,550 m/s = 16,380 km/h
- 4,600 m/s = 16,560 km/h
- 4,650 m/s = 16,740 km/h
- 4,700 m/s = 16,920 km/h
- 4,750 m/s = 17,100 km/h
- 4,800 m/s = 17,280 km/h
- 4,850 m/s = 17,460 km/h
- 4,900 m/s = 17,640 km/h
- 4,950 m/s = 17,820 km/h
- 5,000 m/s = 18,000 km/h
- 5,100 m/s = 18,360 km/h
- 5,200 m/s = 18,720 km/h
- 5,300 m/s = 19,080 km/h
- 5,400 m/s = 19,440 km/h
- 5,500 m/s = 19,800 km/h
- 5,600 m/s = 20,160 km/h
- 5,700 m/s = 20,520 km/h
- 5,800 m/s = 20,880 km/h
- 5,900 m/s = 21,240 km/h
- 6,000 m/s = 21,600 km/h
- 6,100 m/s = 21,960 km/h
- 6,200 m/s = 22,320 km/h
- 6,300 m/s = 22,680 km/h
- 6,400 m/s = 23,040 km/h
- 6,500 m/s = 23,400 km/h
- 6,600 m/s = 23,760 km/h
- 6,700 m/s = 24,120 km/h
- 6,800 m/s = 24,480 km/h
- 6,900 m/s = 24,840 km/h
- 7,000 m/s = 25,200 km/h
- 7,100 m/s = 25,560 km/h
- 7,200 m/s = 25,920 km/h
- 7,300 m/s = 26,280 km/h
- 7,400 m/s = 26,640 km/h
- 7,500 m/s = 27,000 km/h
- 7,600 m/s = 27,360 km/h
- 7,700 m/s = 27,720 km/h
- 7,800 m/s = 28,080 km/h
- 7,900 m/s = 28,440 km/h
- 8,000 m/s = 28,800 km/h
- 8,100 m/s = 29,160 km/h
- 8,200 m/s = 29,520 km/h
- 8,300 m/s = 29,880 km/h
- 8,400 m/s = 30,240 km/h
- 8,500 m/s = 30,600 km/h
- 8,600 m/s = 30,960 km/h
- 8,700 m/s = 31,320 km/h
- 8,800 m/s = 31,680 km/h
- 8,900 m/s = 32,040 km/h
- 9,000 m/s = 32,400 km/h
- 9,100 m/s = 32,760 km/h
- 9,200 m/s = 33,120 km/h
- 9,300 m/s = 33,480 km/h
- 9,400 m/s = 33,840 km/h
- 9,500 m/s = 34,200 km/h
- 9,600 m/s = 34,560 km/h
- 9,700 m/s = 34,920 km/h
- 9,800 m/s = 35,280 km/h
- 9,900 m/s = 35,640 km/h
- 10,000 m/s = 36,000 km/h
メートル毎秒は国際単位系における速さの単位です。係数 3.6 は構成上の正確な値で、3,600 s/h ÷ 1,000 m/km から得られます。 算出方法と出典.
よくある質問
気象で m/s を使うのはなぜですか？
国際単位系の単位であり、予報モデルが用いる単位でもあるからです。日本の気象庁は風速をメートル毎秒で発表しますが、フランスや英国では一般向けにキロメートル毎時やノットへ換算して伝えます。
短距離走者の速さは m/s でどのくらいですか？
ウサイン・ボルトは 100 m の世界記録を平均 10.44 m/s、つまり 37.6 km/h で走り、最高速度は 12.3 m/s すなわち 44.3 km/h と計測されました。市民ランナーはおおむね 3 から 4 m/s です。
3.6 という係数を暗記せずに出すには？
1 時間は 3,600 秒、1 キロメートルは 1,000 メートルです。1 m/s で進むと 1 時間に 3,600 メートル、つまり 3.6 km 進みます。二段階で係数を組み立て直せます。
発表される風速は平均ですか、最大ですか？
平均です。世界気象機関の基準は、地上10メートルで測った10分間の平均風速です。突風は3秒間の最大値で、開けた土地では平均をおよそ40 %上回ります。平均15 m/s、54 km/hなら突風は21 m/s、76 km/h前後になります。アメリカは熱帯低気圧について1分間平均を発表するため、同じ風でも数字が大きく出ます。
m/s の速さをランニングのペースに直すには？
16.67を速さで割ると、1キロあたりの分数が出ます。3.33 m/s、つまり12 km/hならペースは1キロ5分です。トップのマラソン選手は約5.8 m/s、21 km/hを保ち、1キロ2分51秒にあたります。