キロメートル毎時をマイル毎時に換算するには？
km/h の値に 0.6214 を掛けます。暗算では 6 割を取ります。130 km/h なら 78 mph となり実際の 80.8 との差は 3 % ほど、標識を読むには十分です。
mph = km/h × 0.6214km/h = mph × 1.609
この二つの単位が使われる場所
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。 マイル毎時は米国と英国の道路標識を支配しています。どちらも道路に関してはメートル法への移行を最後までやり遂げなかった国です。
速度制限のキロメートル毎時とマイル毎時
| 25 km/h（電動アシスト自転車の上限） | 15.5 mph |
| 30 km/h（生活道路） | 18.6 mph |
| 50 km/h（市街地） | 31.1 mph |
| 60 km/h（一般道） | 37.3 mph |
| 70 km/h | 43.5 mph |
| 80 km/h | 49.7 mph |
| 100 km/h（高速道路） | 62.1 mph |
| 120 km/h（新東名など） | 74.6 mph |
| 200 km/h | 124.3 mph |
| 250 km/h（ドイツ車の自主規制） | 155.3 mph |
| 300 km/h（新幹線） | 186.4 mph |
すべての値を表示
- 1 km/h = 0.6214 mph
- 2 km/h = 1.2427 mph
- 3 km/h = 1.8641 mph
- 4 km/h = 2.4855 mph
- 5 km/h = 3.1069 mph
- 6 km/h = 3.7282 mph
- 7 km/h = 4.3496 mph
- 8 km/h = 4.971 mph
- 9 km/h = 5.5923 mph
- 10 km/h = 6.2137 mph
- 11 km/h = 6.8351 mph
- 12 km/h = 7.4565 mph
- 13 km/h = 8.0778 mph
- 14 km/h = 8.6992 mph
- 15 km/h = 9.3206 mph
- 16 km/h = 9.9419 mph
- 17 km/h = 10.5633 mph
- 18 km/h = 11.1847 mph
- 19 km/h = 11.8061 mph
- 20 km/h = 12.4274 mph
- 21 km/h = 13.0488 mph
- 22 km/h = 13.6702 mph
- 23 km/h = 14.2915 mph
- 24 km/h = 14.9129 mph
- 25 km/h = 15.5343 mph
- 26 km/h = 16.1557 mph
- 27 km/h = 16.777 mph
- 28 km/h = 17.3984 mph
- 29 km/h = 18.0198 mph
- 30 km/h = 18.6411 mph
- 31 km/h = 19.2625 mph
- 32 km/h = 19.8839 mph
- 33 km/h = 20.5052 mph
- 34 km/h = 21.1266 mph
- 35 km/h = 21.748 mph
- 36 km/h = 22.3694 mph
- 37 km/h = 22.9907 mph
- 38 km/h = 23.6121 mph
- 39 km/h = 24.2335 mph
- 40 km/h = 24.8548 mph
- 41 km/h = 25.4762 mph
- 42 km/h = 26.0976 mph
- 43 km/h = 26.719 mph
- 44 km/h = 27.3403 mph
- 45 km/h = 27.9617 mph
- 46 km/h = 28.5831 mph
- 47 km/h = 29.2044 mph
- 48 km/h = 29.8258 mph
- 49 km/h = 30.4472 mph
- 50 km/h = 31.0686 mph
- 51 km/h = 31.6899 mph
- 52 km/h = 32.3113 mph
- 53 km/h = 32.9327 mph
- 54 km/h = 33.554 mph
- 55 km/h = 34.1754 mph
- 56 km/h = 34.7968 mph
- 57 km/h = 35.4182 mph
- 58 km/h = 36.0395 mph
- 59 km/h = 36.6609 mph
- 60 km/h = 37.2823 mph
- 61 km/h = 37.9036 mph
- 62 km/h = 38.525 mph
- 63 km/h = 39.1464 mph
- 64 km/h = 39.7678 mph
- 65 km/h = 40.3891 mph
- 66 km/h = 41.0105 mph
- 67 km/h = 41.6319 mph
- 68 km/h = 42.2532 mph
- 69 km/h = 42.8746 mph
- 70 km/h = 43.496 mph
- 71 km/h = 44.1174 mph
- 72 km/h = 44.7387 mph
- 73 km/h = 45.3601 mph
- 74 km/h = 45.9815 mph
- 75 km/h = 46.6028 mph
- 76 km/h = 47.2242 mph
- 77 km/h = 47.8456 mph
- 78 km/h = 48.467 mph
- 79 km/h = 49.0883 mph
- 80 km/h = 49.7097 mph
- 81 km/h = 50.3311 mph
- 82 km/h = 50.9524 mph
- 83 km/h = 51.5738 mph
- 84 km/h = 52.1952 mph
- 85 km/h = 52.8166 mph
- 86 km/h = 53.4379 mph
- 87 km/h = 54.0593 mph
- 88 km/h = 54.6807 mph
- 89 km/h = 55.302 mph
- 90 km/h = 55.9234 mph
- 91 km/h = 56.5448 mph
- 92 km/h = 57.1661 mph
- 93 km/h = 57.7875 mph
- 94 km/h = 58.4089 mph
- 95 km/h = 59.0303 mph
- 96 km/h = 59.6516 mph
- 97 km/h = 60.273 mph
- 98 km/h = 60.8944 mph
- 99 km/h = 61.5157 mph
- 100 km/h = 62.1371 mph
- 101 km/h = 62.7585 mph
- 102 km/h = 63.3799 mph
- 103 km/h = 64.0012 mph
- 104 km/h = 64.6226 mph
- 105 km/h = 65.244 mph
- 106 km/h = 65.8653 mph
- 107 km/h = 66.4867 mph
- 108 km/h = 67.1081 mph
- 109 km/h = 67.7295 mph
- 110 km/h = 68.3508 mph
- 111 km/h = 68.9722 mph
- 112 km/h = 69.5936 mph
- 113 km/h = 70.2149 mph
- 114 km/h = 70.8363 mph
- 115 km/h = 71.4577 mph
- 116 km/h = 72.0791 mph
- 117 km/h = 72.7004 mph
- 118 km/h = 73.3218 mph
- 119 km/h = 73.9432 mph
- 120 km/h = 74.5645 mph
- 121 km/h = 75.1859 mph
- 122 km/h = 75.8073 mph
- 123 km/h = 76.4287 mph
- 124 km/h = 77.05 mph
- 125 km/h = 77.6714 mph
- 126 km/h = 78.2928 mph
- 127 km/h = 78.9141 mph
- 128 km/h = 79.5355 mph
- 129 km/h = 80.1569 mph
- 130 km/h = 80.7783 mph
- 131 km/h = 81.3996 mph
- 132 km/h = 82.021 mph
- 133 km/h = 82.6424 mph
- 134 km/h = 83.2637 mph
- 135 km/h = 83.8851 mph
- 136 km/h = 84.5065 mph
- 137 km/h = 85.1279 mph
- 138 km/h = 85.7492 mph
- 139 km/h = 86.3706 mph
- 140 km/h = 86.992 mph
- 141 km/h = 87.6133 mph
- 142 km/h = 88.2347 mph
- 143 km/h = 88.8561 mph
- 144 km/h = 89.4775 mph
- 145 km/h = 90.0988 mph
- 146 km/h = 90.7202 mph
- 147 km/h = 91.3416 mph
- 148 km/h = 91.9629 mph
- 149 km/h = 92.5843 mph
- 150 km/h = 93.2057 mph
- 151 km/h = 93.8271 mph
- 152 km/h = 94.4484 mph
- 153 km/h = 95.0698 mph
- 154 km/h = 95.6912 mph
- 155 km/h = 96.3125 mph
- 156 km/h = 96.9339 mph
- 157 km/h = 97.5553 mph
- 158 km/h = 98.1766 mph
- 159 km/h = 98.798 mph
- 160 km/h = 99.4194 mph
- 161 km/h = 100.0408 mph
- 162 km/h = 100.6621 mph
- 163 km/h = 101.2835 mph
- 164 km/h = 101.9049 mph
- 165 km/h = 102.5262 mph
- 166 km/h = 103.1476 mph
- 167 km/h = 103.769 mph
- 168 km/h = 104.3904 mph
- 169 km/h = 105.0117 mph
- 170 km/h = 105.6331 mph
- 171 km/h = 106.2545 mph
- 172 km/h = 106.8758 mph
- 173 km/h = 107.4972 mph
- 174 km/h = 108.1186 mph
- 175 km/h = 108.74 mph
- 176 km/h = 109.3613 mph
- 177 km/h = 109.9827 mph
- 178 km/h = 110.6041 mph
- 179 km/h = 111.2254 mph
- 180 km/h = 111.8468 mph
- 181 km/h = 112.4682 mph
- 182 km/h = 113.0896 mph
- 183 km/h = 113.7109 mph
- 184 km/h = 114.3323 mph
- 185 km/h = 114.9537 mph
- 186 km/h = 115.575 mph
- 187 km/h = 116.1964 mph
- 188 km/h = 116.8178 mph
- 189 km/h = 117.4392 mph
- 190 km/h = 118.0605 mph
- 191 km/h = 118.6819 mph
- 192 km/h = 119.3033 mph
- 193 km/h = 119.9246 mph
- 194 km/h = 120.546 mph
- 195 km/h = 121.1674 mph
- 196 km/h = 121.7888 mph
- 197 km/h = 122.4101 mph
- 198 km/h = 123.0315 mph
- 199 km/h = 123.6529 mph
- 200 km/h = 124.2742 mph
- 205 km/h = 127.3811 mph
- 210 km/h = 130.488 mph
- 215 km/h = 133.5948 mph
- 220 km/h = 136.7017 mph
- 225 km/h = 139.8085 mph
- 230 km/h = 142.9154 mph
- 235 km/h = 146.0222 mph
- 240 km/h = 149.1291 mph
- 245 km/h = 152.2359 mph
- 250 km/h = 155.3428 mph
- 255 km/h = 158.4497 mph
- 260 km/h = 161.5565 mph
- 265 km/h = 164.6634 mph
- 270 km/h = 167.7702 mph
- 275 km/h = 170.8771 mph
- 280 km/h = 173.9839 mph
- 285 km/h = 177.0908 mph
- 290 km/h = 180.1976 mph
- 295 km/h = 183.3045 mph
- 300 km/h = 186.4114 mph
- 305 km/h = 189.5182 mph
- 310 km/h = 192.6251 mph
- 315 km/h = 195.7319 mph
- 320 km/h = 198.8388 mph
- 325 km/h = 201.9456 mph
- 330 km/h = 205.0525 mph
- 335 km/h = 208.1593 mph
- 340 km/h = 211.2662 mph
- 345 km/h = 214.3731 mph
- 350 km/h = 217.4799 mph
- 355 km/h = 220.5868 mph
- 360 km/h = 223.6936 mph
- 365 km/h = 226.8005 mph
- 370 km/h = 229.9073 mph
- 375 km/h = 233.0142 mph
- 380 km/h = 236.1211 mph
- 385 km/h = 239.2279 mph
- 390 km/h = 242.3348 mph
- 395 km/h = 245.4416 mph
- 400 km/h = 248.5485 mph
- 405 km/h = 251.6553 mph
- 410 km/h = 254.7622 mph
- 415 km/h = 257.869 mph
- 420 km/h = 260.9759 mph
- 425 km/h = 264.0828 mph
- 430 km/h = 267.1896 mph
- 435 km/h = 270.2965 mph
- 440 km/h = 273.4033 mph
- 445 km/h = 276.5102 mph
- 450 km/h = 279.617 mph
- 455 km/h = 282.7239 mph
- 460 km/h = 285.8307 mph
- 465 km/h = 288.9376 mph
- 470 km/h = 292.0445 mph
- 475 km/h = 295.1513 mph
- 480 km/h = 298.2582 mph
- 485 km/h = 301.365 mph
- 490 km/h = 304.4719 mph
- 495 km/h = 307.5787 mph
- 500 km/h = 310.6856 mph
- 510 km/h = 316.8993 mph
- 520 km/h = 323.113 mph
- 530 km/h = 329.3267 mph
- 540 km/h = 335.5404 mph
- 550 km/h = 341.7542 mph
- 560 km/h = 347.9679 mph
- 570 km/h = 354.1816 mph
- 580 km/h = 360.3953 mph
- 590 km/h = 366.609 mph
- 600 km/h = 372.8227 mph
- 610 km/h = 379.0364 mph
- 620 km/h = 385.2501 mph
- 630 km/h = 391.4639 mph
- 640 km/h = 397.6776 mph
- 650 km/h = 403.8913 mph
- 660 km/h = 410.105 mph
- 670 km/h = 416.3187 mph
- 680 km/h = 422.5324 mph
- 690 km/h = 428.7461 mph
- 700 km/h = 434.9598 mph
- 710 km/h = 441.1735 mph
- 720 km/h = 447.3873 mph
- 730 km/h = 453.601 mph
- 740 km/h = 459.8147 mph
- 750 km/h = 466.0284 mph
- 760 km/h = 472.2421 mph
- 770 km/h = 478.4558 mph
- 780 km/h = 484.6695 mph
- 790 km/h = 490.8832 mph
- 800 km/h = 497.097 mph
- 810 km/h = 503.3107 mph
- 820 km/h = 509.5244 mph
- 830 km/h = 515.7381 mph
- 840 km/h = 521.9518 mph
- 850 km/h = 528.1655 mph
- 860 km/h = 534.3792 mph
- 870 km/h = 540.5929 mph
- 880 km/h = 546.8066 mph
- 890 km/h = 553.0204 mph
- 900 km/h = 559.2341 mph
- 910 km/h = 565.4478 mph
- 920 km/h = 571.6615 mph
- 930 km/h = 577.8752 mph
- 940 km/h = 584.0889 mph
- 950 km/h = 590.3026 mph
- 960 km/h = 596.5163 mph
- 970 km/h = 602.7301 mph
- 980 km/h = 608.9438 mph
- 990 km/h = 615.1575 mph
- 1,000 km/h = 621.3712 mph
- 1,025 km/h = 636.9055 mph
- 1,050 km/h = 652.4398 mph
- 1,075 km/h = 667.974 mph
- 1,100 km/h = 683.5083 mph
- 1,125 km/h = 699.0426 mph
- 1,150 km/h = 714.5769 mph
- 1,175 km/h = 730.1112 mph
- 1,200 km/h = 745.6454 mph
- 1,225 km/h = 761.1797 mph
- 1,250 km/h = 776.714 mph
- 1,275 km/h = 792.2483 mph
- 1,300 km/h = 807.7825 mph
- 1,325 km/h = 823.3168 mph
- 1,350 km/h = 838.8511 mph
- 1,375 km/h = 854.3854 mph
- 1,400 km/h = 869.9197 mph
- 1,425 km/h = 885.4539 mph
- 1,450 km/h = 900.9882 mph
- 1,475 km/h = 916.5225 mph
- 1,500 km/h = 932.0568 mph
- 1,525 km/h = 947.5911 mph
- 1,550 km/h = 963.1253 mph
- 1,575 km/h = 978.6596 mph
- 1,600 km/h = 994.1939 mph
- 1,625 km/h = 1,009.7282 mph
- 1,650 km/h = 1,025.2625 mph
- 1,675 km/h = 1,040.7967 mph
- 1,700 km/h = 1,056.331 mph
- 1,725 km/h = 1,071.8653 mph
- 1,750 km/h = 1,087.3996 mph
- 1,775 km/h = 1,102.9339 mph
- 1,800 km/h = 1,118.4681 mph
- 1,825 km/h = 1,134.0024 mph
- 1,850 km/h = 1,149.5367 mph
- 1,875 km/h = 1,165.071 mph
- 1,900 km/h = 1,180.6053 mph
- 1,925 km/h = 1,196.1395 mph
- 1,950 km/h = 1,211.6738 mph
- 1,975 km/h = 1,227.2081 mph
- 2,000 km/h = 1,242.7424 mph
- 2,050 km/h = 1,273.8109 mph
- 2,100 km/h = 1,304.8795 mph
- 2,150 km/h = 1,335.9481 mph
- 2,200 km/h = 1,367.0166 mph
- 2,250 km/h = 1,398.0852 mph
- 2,300 km/h = 1,429.1537 mph
- 2,350 km/h = 1,460.2223 mph
- 2,400 km/h = 1,491.2909 mph
- 2,450 km/h = 1,522.3594 mph
- 2,500 km/h = 1,553.428 mph
- 2,550 km/h = 1,584.4965 mph
- 2,600 km/h = 1,615.5651 mph
- 2,650 km/h = 1,646.6337 mph
- 2,700 km/h = 1,677.7022 mph
- 2,750 km/h = 1,708.7708 mph
- 2,800 km/h = 1,739.8393 mph
- 2,850 km/h = 1,770.9079 mph
- 2,900 km/h = 1,801.9765 mph
- 2,950 km/h = 1,833.045 mph
- 3,000 km/h = 1,864.1136 mph
- 3,050 km/h = 1,895.1821 mph
- 3,100 km/h = 1,926.2507 mph
- 3,150 km/h = 1,957.3193 mph
- 3,200 km/h = 1,988.3878 mph
- 3,250 km/h = 2,019.4564 mph
- 3,300 km/h = 2,050.5249 mph
- 3,350 km/h = 2,081.5935 mph
- 3,400 km/h = 2,112.6621 mph
- 3,450 km/h = 2,143.7306 mph
- 3,500 km/h = 2,174.7992 mph
- 3,550 km/h = 2,205.8677 mph
- 3,600 km/h = 2,236.9363 mph
- 3,650 km/h = 2,268.0049 mph
- 3,700 km/h = 2,299.0734 mph
- 3,750 km/h = 2,330.142 mph
- 3,800 km/h = 2,361.2105 mph
- 3,850 km/h = 2,392.2791 mph
- 3,900 km/h = 2,423.3476 mph
- 3,950 km/h = 2,454.4162 mph
- 4,000 km/h = 2,485.4848 mph
- 4,050 km/h = 2,516.5533 mph
- 4,100 km/h = 2,547.6219 mph
- 4,150 km/h = 2,578.6904 mph
- 4,200 km/h = 2,609.759 mph
- 4,250 km/h = 2,640.8276 mph
- 4,300 km/h = 2,671.8961 mph
- 4,350 km/h = 2,702.9647 mph
- 4,400 km/h = 2,734.0332 mph
- 4,450 km/h = 2,765.1018 mph
- 4,500 km/h = 2,796.1704 mph
- 4,550 km/h = 2,827.2389 mph
- 4,600 km/h = 2,858.3075 mph
- 4,650 km/h = 2,889.376 mph
- 4,700 km/h = 2,920.4446 mph
- 4,750 km/h = 2,951.5132 mph
- 4,800 km/h = 2,982.5817 mph
- 4,850 km/h = 3,013.6503 mph
- 4,900 km/h = 3,044.7188 mph
- 4,950 km/h = 3,075.7874 mph
- 5,000 km/h = 3,106.856 mph
- 5,100 km/h = 3,168.9931 mph
- 5,200 km/h = 3,231.1302 mph
- 5,300 km/h = 3,293.2673 mph
- 5,400 km/h = 3,355.4044 mph
- 5,500 km/h = 3,417.5416 mph
- 5,600 km/h = 3,479.6787 mph
- 5,700 km/h = 3,541.8158 mph
- 5,800 km/h = 3,603.9529 mph
- 5,900 km/h = 3,666.09 mph
- 6,000 km/h = 3,728.2272 mph
- 6,100 km/h = 3,790.3643 mph
- 6,200 km/h = 3,852.5014 mph
- 6,300 km/h = 3,914.6385 mph
- 6,400 km/h = 3,976.7756 mph
- 6,500 km/h = 4,038.9127 mph
- 6,600 km/h = 4,101.0499 mph
- 6,700 km/h = 4,163.187 mph
- 6,800 km/h = 4,225.3241 mph
- 6,900 km/h = 4,287.4612 mph
- 7,000 km/h = 4,349.5983 mph
- 7,100 km/h = 4,411.7355 mph
- 7,200 km/h = 4,473.8726 mph
- 7,300 km/h = 4,536.0097 mph
- 7,400 km/h = 4,598.1468 mph
- 7,500 km/h = 4,660.2839 mph
- 7,600 km/h = 4,722.4211 mph
- 7,700 km/h = 4,784.5582 mph
- 7,800 km/h = 4,846.6953 mph
- 7,900 km/h = 4,908.8324 mph
- 8,000 km/h = 4,970.9695 mph
- 8,100 km/h = 5,033.1067 mph
- 8,200 km/h = 5,095.2438 mph
- 8,300 km/h = 5,157.3809 mph
- 8,400 km/h = 5,219.518 mph
- 8,500 km/h = 5,281.6551 mph
- 8,600 km/h = 5,343.7923 mph
- 8,700 km/h = 5,405.9294 mph
- 8,800 km/h = 5,468.0665 mph
- 8,900 km/h = 5,530.2036 mph
- 9,000 km/h = 5,592.3407 mph
- 9,100 km/h = 5,654.4778 mph
- 9,200 km/h = 5,716.615 mph
- 9,300 km/h = 5,778.7521 mph
- 9,400 km/h = 5,840.8892 mph
- 9,500 km/h = 5,903.0263 mph
- 9,600 km/h = 5,965.1634 mph
- 9,700 km/h = 6,027.3006 mph
- 9,800 km/h = 6,089.4377 mph
- 9,900 km/h = 6,151.5748 mph
- 10,000 km/h = 6,213.7119 mph
係数は国際マイルの定義から導かれます。1959 年のヤード・ポンド協定により 1 マイルは正確に 1,609.344 メートルです。 算出方法と出典.
よくある質問
130 km/h は何 mph ですか？
130 km/h は 80.78 mph です。フランスの高速道路の乾燥時の制限速度で、英国の 70 mph、すなわち 113 km/h よりかなり高い値です。
電卓なしで暗算するには？
3 分の 1 を引いて少し戻します。90 km/h なら 90 − 30 = 60、正確な値は 55.9 mph です。さらに簡単に 0.6 を掛けると 90 × 0.6 = 54 となり、実際の値との差は 3.5 % ほどです。
速度計に2つの目盛があるのはなぜですか？
自動車メーカーは同じ車種を大西洋の両側で売っています。主目盛は販売市場に合わせ、もう一方は海外で運転するときに単位を取り違えないためのものです。
速度計は実際の速度より高く表示してよいのですか？
はい、規則がそう定めています。欧州連合で適用される国連欧州経済委員会規則39は、実速度より低い表示を禁じ、実速度の110 %に4 km/hを加えた値までの表示を認めています。実際に130 km/hで走っていれば、計器は合法的に147 km/h、つまり80.8 mphではなく91 mphを指すことがあります。
mph から km/h へ切り替えた国はどうしたのですか？
アイルランドは2005年1月20日に切り替え、制限速度を換算せず定め直しました。市街地の30 mph、48.3 km/hは50 km/hに、高速道路の70 mph、112.7 km/hは120 km/hになりました。どの標識も切り替えの際にわずかに緩んだわけです。