ガロンをリットルに換算するには？
米ガロンの数に 3.785 を掛けます。英ガロンなら係数は 4.546 です。どちらのガロンかを必ず確かめてください。2 割の差は満タンにすればはっきり現れます。
リットル = 米ガロン × 3.785米ガロン = リットル × 0.2642
この二つの単位が使われる場所
リットルは国際単位系に属さず、併用が認められているだけです。1964 年からは正確に 1 立方デシメートルですが、それ以前の 60 年間は水の質量で定義され、2800 万分の 28 だけ大きくなっていました。
よく使う容量のガロンとリットル
| 0.5 gal（米国の牛乳パック） | 1.89 L |
| 1 gal | 3.79 L |
| 5 gal | 18.93 L |
| 10 gal | 37.85 L |
| 15 gal（燃料タンク） | 56.78 L |
| 20 gal | 75.71 L |
| 25 gal | 94.64 L |
| 31 gal（米国のビール樽） | 117.35 L |
| 42 gal（石油1バレル） | 158.99 L |
| 55 gal（米国のドラム缶） | 208.20 L |
| 100 gal | 378.54 L |
すべての値を表示
- 1 gal = 3.785 L
- 2 gal = 7.571 L
- 3 gal = 11.356 L
- 4 gal = 15.142 L
- 5 gal = 18.927 L
- 6 gal = 22.712 L
- 7 gal = 26.498 L
- 8 gal = 30.283 L
- 9 gal = 34.069 L
- 10 gal = 37.854 L
- 11 gal = 41.64 L
- 12 gal = 45.425 L
- 13 gal = 49.21 L
- 14 gal = 52.996 L
- 15 gal = 56.781 L
- 16 gal = 60.567 L
- 17 gal = 64.352 L
- 18 gal = 68.137 L
- 19 gal = 71.923 L
- 20 gal = 75.708 L
- 21 gal = 79.494 L
- 22 gal = 83.279 L
- 23 gal = 87.064 L
- 24 gal = 90.85 L
- 25 gal = 94.635 L
- 26 gal = 98.421 L
- 27 gal = 102.206 L
- 28 gal = 105.992 L
- 29 gal = 109.777 L
- 30 gal = 113.562 L
- 31 gal = 117.348 L
- 32 gal = 121.133 L
- 33 gal = 124.919 L
- 34 gal = 128.704 L
- 35 gal = 132.489 L
- 36 gal = 136.275 L
- 37 gal = 140.06 L
- 38 gal = 143.846 L
- 39 gal = 147.631 L
- 40 gal = 151.416 L
- 41 gal = 155.202 L
- 42 gal = 158.987 L
- 43 gal = 162.773 L
- 44 gal = 166.558 L
- 45 gal = 170.344 L
- 46 gal = 174.129 L
- 47 gal = 177.914 L
- 48 gal = 181.7 L
- 49 gal = 185.485 L
- 50 gal = 189.271 L
- 51 gal = 193.056 L
- 52 gal = 196.841 L
- 53 gal = 200.627 L
- 54 gal = 204.412 L
- 55 gal = 208.198 L
- 56 gal = 211.983 L
- 57 gal = 215.768 L
- 58 gal = 219.554 L
- 59 gal = 223.339 L
- 60 gal = 227.125 L
- 61 gal = 230.91 L
- 62 gal = 234.696 L
- 63 gal = 238.481 L
- 64 gal = 242.266 L
- 65 gal = 246.052 L
- 66 gal = 249.837 L
- 67 gal = 253.623 L
- 68 gal = 257.408 L
- 69 gal = 261.193 L
- 70 gal = 264.979 L
- 71 gal = 268.764 L
- 72 gal = 272.55 L
- 73 gal = 276.335 L
- 74 gal = 280.12 L
- 75 gal = 283.906 L
- 76 gal = 287.691 L
- 77 gal = 291.477 L
- 78 gal = 295.262 L
- 79 gal = 299.048 L
- 80 gal = 302.833 L
- 81 gal = 306.618 L
- 82 gal = 310.404 L
- 83 gal = 314.189 L
- 84 gal = 317.975 L
- 85 gal = 321.76 L
- 86 gal = 325.545 L
- 87 gal = 329.331 L
- 88 gal = 333.116 L
- 89 gal = 336.902 L
- 90 gal = 340.687 L
- 91 gal = 344.472 L
- 92 gal = 348.258 L
- 93 gal = 352.043 L
- 94 gal = 355.829 L
- 95 gal = 359.614 L
- 96 gal = 363.4 L
- 97 gal = 367.185 L
- 98 gal = 370.97 L
- 99 gal = 374.756 L
- 100 gal = 378.541 L
- 101 gal = 382.327 L
- 102 gal = 386.112 L
- 103 gal = 389.897 L
- 104 gal = 393.683 L
- 105 gal = 397.468 L
- 106 gal = 401.254 L
- 107 gal = 405.039 L
- 108 gal = 408.824 L
- 109 gal = 412.61 L
- 110 gal = 416.395 L
- 111 gal = 420.181 L
- 112 gal = 423.966 L
- 113 gal = 427.752 L
- 114 gal = 431.537 L
- 115 gal = 435.322 L
- 116 gal = 439.108 L
- 117 gal = 442.893 L
- 118 gal = 446.679 L
- 119 gal = 450.464 L
- 120 gal = 454.249 L
- 121 gal = 458.035 L
- 122 gal = 461.82 L
- 123 gal = 465.606 L
- 124 gal = 469.391 L
- 125 gal = 473.176 L
- 126 gal = 476.962 L
- 127 gal = 480.747 L
- 128 gal = 484.533 L
- 129 gal = 488.318 L
- 130 gal = 492.104 L
- 131 gal = 495.889 L
- 132 gal = 499.674 L
- 133 gal = 503.46 L
- 134 gal = 507.245 L
- 135 gal = 511.031 L
- 136 gal = 514.816 L
- 137 gal = 518.601 L
- 138 gal = 522.387 L
- 139 gal = 526.172 L
- 140 gal = 529.958 L
- 141 gal = 533.743 L
- 142 gal = 537.528 L
- 143 gal = 541.314 L
- 144 gal = 545.099 L
- 145 gal = 548.885 L
- 146 gal = 552.67 L
- 147 gal = 556.456 L
- 148 gal = 560.241 L
- 149 gal = 564.026 L
- 150 gal = 567.812 L
- 151 gal = 571.597 L
- 152 gal = 575.383 L
- 153 gal = 579.168 L
- 154 gal = 582.953 L
- 155 gal = 586.739 L
- 156 gal = 590.524 L
- 157 gal = 594.31 L
- 158 gal = 598.095 L
- 159 gal = 601.88 L
- 160 gal = 605.666 L
- 161 gal = 609.451 L
- 162 gal = 613.237 L
- 163 gal = 617.022 L
- 164 gal = 620.808 L
- 165 gal = 624.593 L
- 166 gal = 628.378 L
- 167 gal = 632.164 L
- 168 gal = 635.949 L
- 169 gal = 639.735 L
- 170 gal = 643.52 L
- 171 gal = 647.305 L
- 172 gal = 651.091 L
- 173 gal = 654.876 L
- 174 gal = 658.662 L
- 175 gal = 662.447 L
- 176 gal = 666.232 L
- 177 gal = 670.018 L
- 178 gal = 673.803 L
- 179 gal = 677.589 L
- 180 gal = 681.374 L
- 181 gal = 685.16 L
- 182 gal = 688.945 L
- 183 gal = 692.73 L
- 184 gal = 696.516 L
- 185 gal = 700.301 L
- 186 gal = 704.087 L
- 187 gal = 707.872 L
- 188 gal = 711.657 L
- 189 gal = 715.443 L
- 190 gal = 719.228 L
- 191 gal = 723.014 L
- 192 gal = 726.799 L
- 193 gal = 730.584 L
- 194 gal = 734.37 L
- 195 gal = 738.155 L
- 196 gal = 741.941 L
- 197 gal = 745.726 L
- 198 gal = 749.512 L
- 199 gal = 753.297 L
- 200 gal = 757.082 L
- 205 gal = 776.009 L
- 210 gal = 794.936 L
- 215 gal = 813.864 L
- 220 gal = 832.791 L
- 225 gal = 851.718 L
- 230 gal = 870.645 L
- 235 gal = 889.572 L
- 240 gal = 908.499 L
- 245 gal = 927.426 L
- 250 gal = 946.353 L
- 255 gal = 965.28 L
- 260 gal = 984.207 L
- 265 gal = 1,003.134 L
- 270 gal = 1,022.061 L
- 275 gal = 1,040.988 L
- 280 gal = 1,059.915 L
- 285 gal = 1,078.842 L
- 290 gal = 1,097.769 L
- 295 gal = 1,116.696 L
- 300 gal = 1,135.624 L
- 305 gal = 1,154.551 L
- 310 gal = 1,173.478 L
- 315 gal = 1,192.405 L
- 320 gal = 1,211.332 L
- 325 gal = 1,230.259 L
- 330 gal = 1,249.186 L
- 335 gal = 1,268.113 L
- 340 gal = 1,287.04 L
- 345 gal = 1,305.967 L
- 350 gal = 1,324.894 L
- 355 gal = 1,343.821 L
- 360 gal = 1,362.748 L
- 365 gal = 1,381.675 L
- 370 gal = 1,400.602 L
- 375 gal = 1,419.529 L
- 380 gal = 1,438.456 L
- 385 gal = 1,457.384 L
- 390 gal = 1,476.311 L
- 395 gal = 1,495.238 L
- 400 gal = 1,514.165 L
- 405 gal = 1,533.092 L
- 410 gal = 1,552.019 L
- 415 gal = 1,570.946 L
- 420 gal = 1,589.873 L
- 425 gal = 1,608.8 L
- 430 gal = 1,627.727 L
- 435 gal = 1,646.654 L
- 440 gal = 1,665.581 L
- 445 gal = 1,684.508 L
- 450 gal = 1,703.435 L
- 455 gal = 1,722.362 L
- 460 gal = 1,741.289 L
- 465 gal = 1,760.216 L
- 470 gal = 1,779.144 L
- 475 gal = 1,798.071 L
- 480 gal = 1,816.998 L
- 485 gal = 1,835.925 L
- 490 gal = 1,854.852 L
- 495 gal = 1,873.779 L
- 500 gal = 1,892.706 L
- 510 gal = 1,930.56 L
- 520 gal = 1,968.414 L
- 530 gal = 2,006.268 L
- 540 gal = 2,044.122 L
- 550 gal = 2,081.976 L
- 560 gal = 2,119.831 L
- 570 gal = 2,157.685 L
- 580 gal = 2,195.539 L
- 590 gal = 2,233.393 L
- 600 gal = 2,271.247 L
- 610 gal = 2,309.101 L
- 620 gal = 2,346.955 L
- 630 gal = 2,384.809 L
- 640 gal = 2,422.664 L
- 650 gal = 2,460.518 L
- 660 gal = 2,498.372 L
- 670 gal = 2,536.226 L
- 680 gal = 2,574.08 L
- 690 gal = 2,611.934 L
- 700 gal = 2,649.788 L
- 710 gal = 2,687.642 L
- 720 gal = 2,725.496 L
- 730 gal = 2,763.351 L
- 740 gal = 2,801.205 L
- 750 gal = 2,839.059 L
- 760 gal = 2,876.913 L
- 770 gal = 2,914.767 L
- 780 gal = 2,952.621 L
- 790 gal = 2,990.475 L
- 800 gal = 3,028.329 L
- 810 gal = 3,066.184 L
- 820 gal = 3,104.038 L
- 830 gal = 3,141.892 L
- 840 gal = 3,179.746 L
- 850 gal = 3,217.6 L
- 860 gal = 3,255.454 L
- 870 gal = 3,293.308 L
- 880 gal = 3,331.162 L
- 890 gal = 3,369.016 L
- 900 gal = 3,406.871 L
- 910 gal = 3,444.725 L
- 920 gal = 3,482.579 L
- 930 gal = 3,520.433 L
- 940 gal = 3,558.287 L
- 950 gal = 3,596.141 L
- 960 gal = 3,633.995 L
- 970 gal = 3,671.849 L
- 980 gal = 3,709.704 L
- 990 gal = 3,747.558 L
- 1,000 gal = 3,785.412 L
- 1,025 gal = 3,880.047 L
- 1,050 gal = 3,974.682 L
- 1,075 gal = 4,069.318 L
- 1,100 gal = 4,163.953 L
- 1,125 gal = 4,258.588 L
- 1,150 gal = 4,353.224 L
- 1,175 gal = 4,447.859 L
- 1,200 gal = 4,542.494 L
- 1,225 gal = 4,637.129 L
- 1,250 gal = 4,731.765 L
- 1,275 gal = 4,826.4 L
- 1,300 gal = 4,921.035 L
- 1,325 gal = 5,015.671 L
- 1,350 gal = 5,110.306 L
- 1,375 gal = 5,204.941 L
- 1,400 gal = 5,299.576 L
- 1,425 gal = 5,394.212 L
- 1,450 gal = 5,488.847 L
- 1,475 gal = 5,583.482 L
- 1,500 gal = 5,678.118 L
- 1,525 gal = 5,772.753 L
- 1,550 gal = 5,867.388 L
- 1,575 gal = 5,962.024 L
- 1,600 gal = 6,056.659 L
- 1,625 gal = 6,151.294 L
- 1,650 gal = 6,245.929 L
- 1,675 gal = 6,340.565 L
- 1,700 gal = 6,435.2 L
- 1,725 gal = 6,529.835 L
- 1,750 gal = 6,624.471 L
- 1,775 gal = 6,719.106 L
- 1,800 gal = 6,813.741 L
- 1,825 gal = 6,908.377 L
- 1,850 gal = 7,003.012 L
- 1,875 gal = 7,097.647 L
- 1,900 gal = 7,192.282 L
- 1,925 gal = 7,286.918 L
- 1,950 gal = 7,381.553 L
- 1,975 gal = 7,476.188 L
- 2,000 gal = 7,570.824 L
- 2,050 gal = 7,760.094 L
- 2,100 gal = 7,949.365 L
- 2,150 gal = 8,138.635 L
- 2,200 gal = 8,327.906 L
- 2,250 gal = 8,517.177 L
- 2,300 gal = 8,706.447 L
- 2,350 gal = 8,895.718 L
- 2,400 gal = 9,084.988 L
- 2,450 gal = 9,274.259 L
- 2,500 gal = 9,463.529 L
- 2,550 gal = 9,652.8 L
- 2,600 gal = 9,842.071 L
- 2,650 gal = 10,031.341 L
- 2,700 gal = 10,220.612 L
- 2,750 gal = 10,409.882 L
- 2,800 gal = 10,599.153 L
- 2,850 gal = 10,788.424 L
- 2,900 gal = 10,977.694 L
- 2,950 gal = 11,166.965 L
- 3,000 gal = 11,356.235 L
- 3,050 gal = 11,545.506 L
- 3,100 gal = 11,734.777 L
- 3,150 gal = 11,924.047 L
- 3,200 gal = 12,113.318 L
- 3,250 gal = 12,302.588 L
- 3,300 gal = 12,491.859 L
- 3,350 gal = 12,681.129 L
- 3,400 gal = 12,870.4 L
- 3,450 gal = 13,059.671 L
- 3,500 gal = 13,248.941 L
- 3,550 gal = 13,438.212 L
- 3,600 gal = 13,627.482 L
- 3,650 gal = 13,816.753 L
- 3,700 gal = 14,006.024 L
- 3,750 gal = 14,195.294 L
- 3,800 gal = 14,384.565 L
- 3,850 gal = 14,573.835 L
- 3,900 gal = 14,763.106 L
- 3,950 gal = 14,952.377 L
- 4,000 gal = 15,141.647 L
- 4,050 gal = 15,330.918 L
- 4,100 gal = 15,520.188 L
- 4,150 gal = 15,709.459 L
- 4,200 gal = 15,898.729 L
- 4,250 gal = 16,088 L
- 4,300 gal = 16,277.271 L
- 4,350 gal = 16,466.541 L
- 4,400 gal = 16,655.812 L
- 4,450 gal = 16,845.082 L
- 4,500 gal = 17,034.353 L
- 4,550 gal = 17,223.624 L
- 4,600 gal = 17,412.894 L
- 4,650 gal = 17,602.165 L
- 4,700 gal = 17,791.435 L
- 4,750 gal = 17,980.706 L
- 4,800 gal = 18,169.977 L
- 4,850 gal = 18,359.247 L
- 4,900 gal = 18,548.518 L
- 4,950 gal = 18,737.788 L
- 5,000 gal = 18,927.059 L
- 5,100 gal = 19,305.6 L
- 5,200 gal = 19,684.141 L
- 5,300 gal = 20,062.682 L
- 5,400 gal = 20,441.224 L
- 5,500 gal = 20,819.765 L
- 5,600 gal = 21,198.306 L
- 5,700 gal = 21,576.847 L
- 5,800 gal = 21,955.388 L
- 5,900 gal = 22,333.93 L
- 6,000 gal = 22,712.471 L
- 6,100 gal = 23,091.012 L
- 6,200 gal = 23,469.553 L
- 6,300 gal = 23,848.094 L
- 6,400 gal = 24,226.635 L
- 6,500 gal = 24,605.177 L
- 6,600 gal = 24,983.718 L
- 6,700 gal = 25,362.259 L
- 6,800 gal = 25,740.8 L
- 6,900 gal = 26,119.341 L
- 7,000 gal = 26,497.882 L
- 7,100 gal = 26,876.424 L
- 7,200 gal = 27,254.965 L
- 7,300 gal = 27,633.506 L
- 7,400 gal = 28,012.047 L
- 7,500 gal = 28,390.588 L
- 7,600 gal = 28,769.13 L
- 7,700 gal = 29,147.671 L
- 7,800 gal = 29,526.212 L
- 7,900 gal = 29,904.753 L
- 8,000 gal = 30,283.294 L
- 8,100 gal = 30,661.835 L
- 8,200 gal = 31,040.377 L
- 8,300 gal = 31,418.918 L
- 8,400 gal = 31,797.459 L
- 8,500 gal = 32,176 L
- 8,600 gal = 32,554.541 L
- 8,700 gal = 32,933.083 L
- 8,800 gal = 33,311.624 L
- 8,900 gal = 33,690.165 L
- 9,000 gal = 34,068.706 L
- 9,100 gal = 34,447.247 L
- 9,200 gal = 34,825.788 L
- 9,300 gal = 35,204.33 L
- 9,400 gal = 35,582.871 L
- 9,500 gal = 35,961.412 L
- 9,600 gal = 36,339.953 L
- 9,700 gal = 36,718.494 L
- 9,800 gal = 37,097.035 L
- 9,900 gal = 37,475.577 L
- 10,000 gal = 37,854.118 L
米ガロンは正確に 3.785411784 リットル、英ガロンは 1985 年の再定義以降 4.54609 リットルです。いずれも定義による正確な値です。 算出方法と出典.
よくある質問
米ガロンと英ガロンのどちらですか？
米ガロンは 3.785 L、英ガロンは 4.546 L です。米国のサイトやレシピは前者を指し、英国やカナダでは後者であることがよくあります。2 割の差はタンクの容量では決定的です。
石油1バレルが159リットルなのはなぜですか？
42 米ガロンにあたるからです。1860 年ごろペンシルベニアの初期の油田で再利用されたウイスキー樽から受け継がれた規格で、メートル法とは無関係のまま一度も改められていません。
マイル毎ガロンの燃費はどう読みますか？
235.2 をマイル毎ガロンの値で割ると、100 km あたりのリットル数になります。30 mpg の車は 7.8 L/100 km です。2つの目盛は向きが逆になります。
なぜ米ガロンは 3.785 リットルなのですか？
英国のワインガロンを受け継いでいるからです。1707 年のアン女王の法により 231 立方インチと定められ、米国は独立後もそのまま使い続けました。一方の英国は 1824 年に数十種類あった地方ごとのガロンを廃し、より大きな一つのガロンに統一しました。231 立方インチは 3.785411784 リットルにあたり、丸めた値ではなく定義値です。
燃料 1 ガロンは温度で変わりますか？
体積で見れば変わります。ガソリンは 1 度あたりおよそ 0.1 パーセント膨張するため、15 °C と 30 °C では同じ 1 ガロンでも中身が約 1.4 パーセント少なくなります。卸取引は 60 °F、すなわち 15.6 °C に補正した正味ガロンで精算しますが、北米の給油機は通常、ノズルから出たままの総体積を計量します。