Comment convertir des km/h en mph ?
Multipliez la valeur en km/h par 0,6214. De tête, prenez six dixièmes : 130 km/h donnent 78 mph contre 80,8 en réalité, soit 3 % d'écart, suffisant pour lire un panneau.
mph = km/h × 0,6214km/h = mph × 1,609
Où ces deux unités servent
Le kilomètre par heure figure sur les panneaux routiers de la quasi-totalité des pays, et c'est l'unité que lisent les compteurs de voiture hors monde anglo-saxon. Le mille par heure règne sur les panneaux routiers des États-Unis et du Royaume-Uni, deux pays qui n'ont jamais achevé leur passage au métrique sur la route.
Limitations de vitesse en km/h et mph
| 25 km/h (assistance électrique coupée) | 15,5 mph |
| 30 km/h (zone 30) | 18,6 mph |
| 50 km/h (agglomération) | 31,1 mph |
| 70 km/h | 43,5 mph |
| 80 km/h | 49,7 mph |
| 90 km/h (route) | 55,9 mph |
| 110 km/h (voie rapide) | 68,4 mph |
| 130 km/h (autoroute) | 80,8 mph |
| 200 km/h | 124,3 mph |
| 250 km/h (bridage volontaire allemand) | 155,3 mph |
| 300 km/h (TGV) | 186,4 mph |
Voir toutes les valeurs
- 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
Le facteur découle de la définition du mile international, exactement 1 609,344 mètres depuis l'accord de 1959 sur le yard et la livre. Méthodologie & sources.
Questions fréquentes
Combien font 130 km/h en mph ?
130 km/h valent 80,78 mph. C'est la limitation sur autoroute française par temps sec, sensiblement plus élevée que les 70 mph britanniques, soit 113 km/h.
Comment convertir de tête sans calculatrice ?
Retirez un tiers, puis ajoutez un peu. Pour 90 km/h : 90 − 30 = 60, la valeur exacte étant 55,9 mph. Plus simple encore, multipliez par 0,6 : 90 × 0,6 = 54, à 3,5 % du réel.
Pourquoi mon compteur affiche-t-il les deux échelles ?
Les constructeurs vendent le même modèle des deux côtés de la Manche. La graduation principale correspond au marché de vente, la seconde permet de rouler à l'étranger sans se tromper de référence.
Mon compteur peut-il afficher plus que ma vitesse réelle ?
Oui, et c'est la règle. Le règlement UNECE R39, appliqué dans l'Union européenne, interdit à un compteur d'afficher moins que la vitesse réelle et l'autorise à afficher jusqu'à 110 % de celle-ci plus 4 km/h. À 130 km/h réels, le cadran peut légalement indiquer 147 km/h, soit 91 mph au lieu de 80,8.
Comment un pays passe-t-il des mph aux km/h ?
L'Irlande l'a fait le 20 janvier 2005, et elle n'a pas converti ses limitations, elle les a redéfinies. Les 30 mph d'agglomération, soit 48,3 km/h, sont devenus 50 km/h, et les 70 mph d'autoroute, soit 112,7 km/h, sont devenus 120 km/h. Chaque panneau a donc légèrement relevé la limite au passage.