インチをセンチメートルに換算するには？
インチの数に 2.54 を掛けます。定義により正確な関係なので、結果の精度は元の値の精度だけで決まります。
センチメートル = インチ × 2.54インチ = センチメートル ÷ 2.54
この二つの単位が使われる場所
センチメートルは、インチが支配しないすべての場所で、衣類のサイズ、身体の寸法、紙の判型を測る単位です。
画面サイズのインチとセンチメートル
| 1 in | 2.54 cm |
| 3 in | 7.62 cm |
| 6 in（スマートフォン） | 15.24 cm |
| 10 in（タブレット） | 25.40 cm |
| 13 in（ノートパソコン） | 33.02 cm |
| 15 in（ノートパソコン） | 38.10 cm |
| 20 in | 50.80 cm |
| 24 in（モニター） | 60.96 cm |
| 32 in（テレビ） | 81.28 cm |
| 40 in | 101.60 cm |
| 55 in（テレビ） | 139.70 cm |
すべての値を表示
- 1 in = 2.54 cm
- 2 in = 5.08 cm
- 3 in = 7.62 cm
- 4 in = 10.16 cm
- 5 in = 12.7 cm
- 6 in = 15.24 cm
- 7 in = 17.78 cm
- 8 in = 20.32 cm
- 9 in = 22.86 cm
- 10 in = 25.4 cm
- 11 in = 27.94 cm
- 12 in = 30.48 cm
- 13 in = 33.02 cm
- 14 in = 35.56 cm
- 15 in = 38.1 cm
- 16 in = 40.64 cm
- 17 in = 43.18 cm
- 18 in = 45.72 cm
- 19 in = 48.26 cm
- 20 in = 50.8 cm
- 21 in = 53.34 cm
- 22 in = 55.88 cm
- 23 in = 58.42 cm
- 24 in = 60.96 cm
- 25 in = 63.5 cm
- 26 in = 66.04 cm
- 27 in = 68.58 cm
- 28 in = 71.12 cm
- 29 in = 73.66 cm
- 30 in = 76.2 cm
- 31 in = 78.74 cm
- 32 in = 81.28 cm
- 33 in = 83.82 cm
- 34 in = 86.36 cm
- 35 in = 88.9 cm
- 36 in = 91.44 cm
- 37 in = 93.98 cm
- 38 in = 96.52 cm
- 39 in = 99.06 cm
- 40 in = 101.6 cm
- 41 in = 104.14 cm
- 42 in = 106.68 cm
- 43 in = 109.22 cm
- 44 in = 111.76 cm
- 45 in = 114.3 cm
- 46 in = 116.84 cm
- 47 in = 119.38 cm
- 48 in = 121.92 cm
- 49 in = 124.46 cm
- 50 in = 127 cm
- 51 in = 129.54 cm
- 52 in = 132.08 cm
- 53 in = 134.62 cm
- 54 in = 137.16 cm
- 55 in = 139.7 cm
- 56 in = 142.24 cm
- 57 in = 144.78 cm
- 58 in = 147.32 cm
- 59 in = 149.86 cm
- 60 in = 152.4 cm
- 61 in = 154.94 cm
- 62 in = 157.48 cm
- 63 in = 160.02 cm
- 64 in = 162.56 cm
- 65 in = 165.1 cm
- 66 in = 167.64 cm
- 67 in = 170.18 cm
- 68 in = 172.72 cm
- 69 in = 175.26 cm
- 70 in = 177.8 cm
- 71 in = 180.34 cm
- 72 in = 182.88 cm
- 73 in = 185.42 cm
- 74 in = 187.96 cm
- 75 in = 190.5 cm
- 76 in = 193.04 cm
- 77 in = 195.58 cm
- 78 in = 198.12 cm
- 79 in = 200.66 cm
- 80 in = 203.2 cm
- 81 in = 205.74 cm
- 82 in = 208.28 cm
- 83 in = 210.82 cm
- 84 in = 213.36 cm
- 85 in = 215.9 cm
- 86 in = 218.44 cm
- 87 in = 220.98 cm
- 88 in = 223.52 cm
- 89 in = 226.06 cm
- 90 in = 228.6 cm
- 91 in = 231.14 cm
- 92 in = 233.68 cm
- 93 in = 236.22 cm
- 94 in = 238.76 cm
- 95 in = 241.3 cm
- 96 in = 243.84 cm
- 97 in = 246.38 cm
- 98 in = 248.92 cm
- 99 in = 251.46 cm
- 100 in = 254 cm
- 101 in = 256.54 cm
- 102 in = 259.08 cm
- 103 in = 261.62 cm
- 104 in = 264.16 cm
- 105 in = 266.7 cm
- 106 in = 269.24 cm
- 107 in = 271.78 cm
- 108 in = 274.32 cm
- 109 in = 276.86 cm
- 110 in = 279.4 cm
- 111 in = 281.94 cm
- 112 in = 284.48 cm
- 113 in = 287.02 cm
- 114 in = 289.56 cm
- 115 in = 292.1 cm
- 116 in = 294.64 cm
- 117 in = 297.18 cm
- 118 in = 299.72 cm
- 119 in = 302.26 cm
- 120 in = 304.8 cm
- 121 in = 307.34 cm
- 122 in = 309.88 cm
- 123 in = 312.42 cm
- 124 in = 314.96 cm
- 125 in = 317.5 cm
- 126 in = 320.04 cm
- 127 in = 322.58 cm
- 128 in = 325.12 cm
- 129 in = 327.66 cm
- 130 in = 330.2 cm
- 131 in = 332.74 cm
- 132 in = 335.28 cm
- 133 in = 337.82 cm
- 134 in = 340.36 cm
- 135 in = 342.9 cm
- 136 in = 345.44 cm
- 137 in = 347.98 cm
- 138 in = 350.52 cm
- 139 in = 353.06 cm
- 140 in = 355.6 cm
- 141 in = 358.14 cm
- 142 in = 360.68 cm
- 143 in = 363.22 cm
- 144 in = 365.76 cm
- 145 in = 368.3 cm
- 146 in = 370.84 cm
- 147 in = 373.38 cm
- 148 in = 375.92 cm
- 149 in = 378.46 cm
- 150 in = 381 cm
- 151 in = 383.54 cm
- 152 in = 386.08 cm
- 153 in = 388.62 cm
- 154 in = 391.16 cm
- 155 in = 393.7 cm
- 156 in = 396.24 cm
- 157 in = 398.78 cm
- 158 in = 401.32 cm
- 159 in = 403.86 cm
- 160 in = 406.4 cm
- 161 in = 408.94 cm
- 162 in = 411.48 cm
- 163 in = 414.02 cm
- 164 in = 416.56 cm
- 165 in = 419.1 cm
- 166 in = 421.64 cm
- 167 in = 424.18 cm
- 168 in = 426.72 cm
- 169 in = 429.26 cm
- 170 in = 431.8 cm
- 171 in = 434.34 cm
- 172 in = 436.88 cm
- 173 in = 439.42 cm
- 174 in = 441.96 cm
- 175 in = 444.5 cm
- 176 in = 447.04 cm
- 177 in = 449.58 cm
- 178 in = 452.12 cm
- 179 in = 454.66 cm
- 180 in = 457.2 cm
- 181 in = 459.74 cm
- 182 in = 462.28 cm
- 183 in = 464.82 cm
- 184 in = 467.36 cm
- 185 in = 469.9 cm
- 186 in = 472.44 cm
- 187 in = 474.98 cm
- 188 in = 477.52 cm
- 189 in = 480.06 cm
- 190 in = 482.6 cm
- 191 in = 485.14 cm
- 192 in = 487.68 cm
- 193 in = 490.22 cm
- 194 in = 492.76 cm
- 195 in = 495.3 cm
- 196 in = 497.84 cm
- 197 in = 500.38 cm
- 198 in = 502.92 cm
- 199 in = 505.46 cm
- 200 in = 508 cm
- 205 in = 520.7 cm
- 210 in = 533.4 cm
- 215 in = 546.1 cm
- 220 in = 558.8 cm
- 225 in = 571.5 cm
- 230 in = 584.2 cm
- 235 in = 596.9 cm
- 240 in = 609.6 cm
- 245 in = 622.3 cm
- 250 in = 635 cm
- 255 in = 647.7 cm
- 260 in = 660.4 cm
- 265 in = 673.1 cm
- 270 in = 685.8 cm
- 275 in = 698.5 cm
- 280 in = 711.2 cm
- 285 in = 723.9 cm
- 290 in = 736.6 cm
- 295 in = 749.3 cm
- 300 in = 762 cm
- 305 in = 774.7 cm
- 310 in = 787.4 cm
- 315 in = 800.1 cm
- 320 in = 812.8 cm
- 325 in = 825.5 cm
- 330 in = 838.2 cm
- 335 in = 850.9 cm
- 340 in = 863.6 cm
- 345 in = 876.3 cm
- 350 in = 889 cm
- 355 in = 901.7 cm
- 360 in = 914.4 cm
- 365 in = 927.1 cm
- 370 in = 939.8 cm
- 375 in = 952.5 cm
- 380 in = 965.2 cm
- 385 in = 977.9 cm
- 390 in = 990.6 cm
- 395 in = 1,003.3 cm
- 400 in = 1,016 cm
- 405 in = 1,028.7 cm
- 410 in = 1,041.4 cm
- 415 in = 1,054.1 cm
- 420 in = 1,066.8 cm
- 425 in = 1,079.5 cm
- 430 in = 1,092.2 cm
- 435 in = 1,104.9 cm
- 440 in = 1,117.6 cm
- 445 in = 1,130.3 cm
- 450 in = 1,143 cm
- 455 in = 1,155.7 cm
- 460 in = 1,168.4 cm
- 465 in = 1,181.1 cm
- 470 in = 1,193.8 cm
- 475 in = 1,206.5 cm
- 480 in = 1,219.2 cm
- 485 in = 1,231.9 cm
- 490 in = 1,244.6 cm
- 495 in = 1,257.3 cm
- 500 in = 1,270 cm
- 510 in = 1,295.4 cm
- 520 in = 1,320.8 cm
- 530 in = 1,346.2 cm
- 540 in = 1,371.6 cm
- 550 in = 1,397 cm
- 560 in = 1,422.4 cm
- 570 in = 1,447.8 cm
- 580 in = 1,473.2 cm
- 590 in = 1,498.6 cm
- 600 in = 1,524 cm
- 610 in = 1,549.4 cm
- 620 in = 1,574.8 cm
- 630 in = 1,600.2 cm
- 640 in = 1,625.6 cm
- 650 in = 1,651 cm
- 660 in = 1,676.4 cm
- 670 in = 1,701.8 cm
- 680 in = 1,727.2 cm
- 690 in = 1,752.6 cm
- 700 in = 1,778 cm
- 710 in = 1,803.4 cm
- 720 in = 1,828.8 cm
- 730 in = 1,854.2 cm
- 740 in = 1,879.6 cm
- 750 in = 1,905 cm
- 760 in = 1,930.4 cm
- 770 in = 1,955.8 cm
- 780 in = 1,981.2 cm
- 790 in = 2,006.6 cm
- 800 in = 2,032 cm
- 810 in = 2,057.4 cm
- 820 in = 2,082.8 cm
- 830 in = 2,108.2 cm
- 840 in = 2,133.6 cm
- 850 in = 2,159 cm
- 860 in = 2,184.4 cm
- 870 in = 2,209.8 cm
- 880 in = 2,235.2 cm
- 890 in = 2,260.6 cm
- 900 in = 2,286 cm
- 910 in = 2,311.4 cm
- 920 in = 2,336.8 cm
- 930 in = 2,362.2 cm
- 940 in = 2,387.6 cm
- 950 in = 2,413 cm
- 960 in = 2,438.4 cm
- 970 in = 2,463.8 cm
- 980 in = 2,489.2 cm
- 990 in = 2,514.6 cm
- 1,000 in = 2,540 cm
- 1,025 in = 2,603.5 cm
- 1,050 in = 2,667 cm
- 1,075 in = 2,730.5 cm
- 1,100 in = 2,794 cm
- 1,125 in = 2,857.5 cm
- 1,150 in = 2,921 cm
- 1,175 in = 2,984.5 cm
- 1,200 in = 3,048 cm
- 1,225 in = 3,111.5 cm
- 1,250 in = 3,175 cm
- 1,275 in = 3,238.5 cm
- 1,300 in = 3,302 cm
- 1,325 in = 3,365.5 cm
- 1,350 in = 3,429 cm
- 1,375 in = 3,492.5 cm
- 1,400 in = 3,556 cm
- 1,425 in = 3,619.5 cm
- 1,450 in = 3,683 cm
- 1,475 in = 3,746.5 cm
- 1,500 in = 3,810 cm
- 1,525 in = 3,873.5 cm
- 1,550 in = 3,937 cm
- 1,575 in = 4,000.5 cm
- 1,600 in = 4,064 cm
- 1,625 in = 4,127.5 cm
- 1,650 in = 4,191 cm
- 1,675 in = 4,254.5 cm
- 1,700 in = 4,318 cm
- 1,725 in = 4,381.5 cm
- 1,750 in = 4,445 cm
- 1,775 in = 4,508.5 cm
- 1,800 in = 4,572 cm
- 1,825 in = 4,635.5 cm
- 1,850 in = 4,699 cm
- 1,875 in = 4,762.5 cm
- 1,900 in = 4,826 cm
- 1,925 in = 4,889.5 cm
- 1,950 in = 4,953 cm
- 1,975 in = 5,016.5 cm
- 2,000 in = 5,080 cm
- 2,050 in = 5,207 cm
- 2,100 in = 5,334 cm
- 2,150 in = 5,461 cm
- 2,200 in = 5,588 cm
- 2,250 in = 5,715 cm
- 2,300 in = 5,842 cm
- 2,350 in = 5,969 cm
- 2,400 in = 6,096 cm
- 2,450 in = 6,223 cm
- 2,500 in = 6,350 cm
- 2,550 in = 6,477 cm
- 2,600 in = 6,604 cm
- 2,650 in = 6,731 cm
- 2,700 in = 6,858 cm
- 2,750 in = 6,985 cm
- 2,800 in = 7,112 cm
- 2,850 in = 7,239 cm
- 2,900 in = 7,366 cm
- 2,950 in = 7,493 cm
- 3,000 in = 7,620 cm
- 3,050 in = 7,747 cm
- 3,100 in = 7,874 cm
- 3,150 in = 8,001 cm
- 3,200 in = 8,128 cm
- 3,250 in = 8,255 cm
- 3,300 in = 8,382 cm
- 3,350 in = 8,509 cm
- 3,400 in = 8,636 cm
- 3,450 in = 8,763 cm
- 3,500 in = 8,890 cm
- 3,550 in = 9,017 cm
- 3,600 in = 9,144 cm
- 3,650 in = 9,271 cm
- 3,700 in = 9,398 cm
- 3,750 in = 9,525 cm
- 3,800 in = 9,652 cm
- 3,850 in = 9,779 cm
- 3,900 in = 9,906 cm
- 3,950 in = 10,033 cm
- 4,000 in = 10,160 cm
- 4,050 in = 10,287 cm
- 4,100 in = 10,414 cm
- 4,150 in = 10,541 cm
- 4,200 in = 10,668 cm
- 4,250 in = 10,795 cm
- 4,300 in = 10,922 cm
- 4,350 in = 11,049 cm
- 4,400 in = 11,176 cm
- 4,450 in = 11,303 cm
- 4,500 in = 11,430 cm
- 4,550 in = 11,557 cm
- 4,600 in = 11,684 cm
- 4,650 in = 11,811 cm
- 4,700 in = 11,938 cm
- 4,750 in = 12,065 cm
- 4,800 in = 12,192 cm
- 4,850 in = 12,319 cm
- 4,900 in = 12,446 cm
- 4,950 in = 12,573 cm
- 5,000 in = 12,700 cm
- 5,100 in = 12,954 cm
- 5,200 in = 13,208 cm
- 5,300 in = 13,462 cm
- 5,400 in = 13,716 cm
- 5,500 in = 13,970 cm
- 5,600 in = 14,224 cm
- 5,700 in = 14,478 cm
- 5,800 in = 14,732 cm
- 5,900 in = 14,986 cm
- 6,000 in = 15,240 cm
- 6,100 in = 15,494 cm
- 6,200 in = 15,748 cm
- 6,300 in = 16,002 cm
- 6,400 in = 16,256 cm
- 6,500 in = 16,510 cm
- 6,600 in = 16,764 cm
- 6,700 in = 17,018 cm
- 6,800 in = 17,272 cm
- 6,900 in = 17,526 cm
- 7,000 in = 17,780 cm
- 7,100 in = 18,034 cm
- 7,200 in = 18,288 cm
- 7,300 in = 18,542 cm
- 7,400 in = 18,796 cm
- 7,500 in = 19,050 cm
- 7,600 in = 19,304 cm
- 7,700 in = 19,558 cm
- 7,800 in = 19,812 cm
- 7,900 in = 20,066 cm
- 8,000 in = 20,320 cm
- 8,100 in = 20,574 cm
- 8,200 in = 20,828 cm
- 8,300 in = 21,082 cm
- 8,400 in = 21,336 cm
- 8,500 in = 21,590 cm
- 8,600 in = 21,844 cm
- 8,700 in = 22,098 cm
- 8,800 in = 22,352 cm
- 8,900 in = 22,606 cm
- 9,000 in = 22,860 cm
- 9,100 in = 23,114 cm
- 9,200 in = 23,368 cm
- 9,300 in = 23,622 cm
- 9,400 in = 23,876 cm
- 9,500 in = 24,130 cm
- 9,600 in = 24,384 cm
- 9,700 in = 24,638 cm
- 9,800 in = 24,892 cm
- 9,900 in = 25,146 cm
- 10,000 in = 25,400 cm
インチの分数
| 1/16 in | 0.159 cm |
| 1/8 in | 0.318 cm |
| 3/16 in | 0.476 cm |
| 1/4 in | 0.635 cm |
| 5/16 in | 0.794 cm |
| 3/8 in | 0.953 cm |
| 7/16 in | 1.111 cm |
| 1/2 in | 1.27 cm |
| 9/16 in | 1.429 cm |
| 5/8 in | 1.588 cm |
| 11/16 in | 1.746 cm |
| 3/4 in | 1.905 cm |
| 13/16 in | 2.064 cm |
| 7/8 in | 2.223 cm |
| 15/16 in | 2.381 cm |
| 1 in | 2.54 cm |
1959 年の国際ヤード・ポンド協定はインチを正確に 0.0254 メートル、すなわち丸めなしの 2.54 cm と定めています。 算出方法と出典.
よくある質問
1インチは何センチメートルですか？
1インチは 2.54 センチメートルです。これは 1959 年に採択された正確な定義であり、近似値ではありません。
テレビのインチ表示はどう読みますか？
示されるのは画面の対角線で、横幅ではありません。55 インチのテレビは対角線が 139.7 cm ですが、16:9 なら横幅はおよそ 122 cm、高さはおよそ 68 cm です。
メートル法の国でインチが残るのはなぜですか？
画面の対角線、配管の径、ねじ山、自転車のホイールサイズがインチで規格化されているためです。これらをセンチに置き換える費用は、得られる利点を上回ります。
2 インチ × 4 インチの材が実際にはその寸法でないのはなぜですか？
表示寸法が、乾燥と鉋がけの前の粗材の寸法だからです。北米の 2×4 材は製材所を 2 インチ × 4 インチで出て、手元には 1.5 インチ × 3.5 インチ、すなわち 38 ミリ × 89 ミリで届きます。これは呼称の約束事であって偽りではありませんが、切り出しを注文する前に知っておくべきことです。
インチの分数はどう読みますか？
米国の定規や工具は、インチを小数ではなく 16 分の 1 きざみで分けます。16 分の 1 は 1.5875 ミリ、8 分の 1 は 3.175 ミリ、4 分の 1 は 6.35 ミリ、2 分の 1 は 12.7 ミリです。3/8 インチの寸法は 9.525 ミリ、5/16 インチは 7.9375 ミリになります。一方で切りのよい数は、もう一方では決して切りがよくありません。