インチをミリメートルに換算する方法

in の値に 25.4 を掛けると、結果は mm になります。

mm = in × 25.4逆方向では 1 mm = 0.03937007874 in です。

この二つの単位が使われる場所

インチは正確に 2.54 センチメートルで、メートル法しか使わない国も含め、世界中で画面の大きさを表しています。ミリメートルは普通の定規が示す最小の目盛りであり、降水量の単位でもあれば機械加工の公差の単位でもあります。両者を同居させるのは作業場です。ねじはミリメートルで注文し、配管とドリルはインチのまま。一枚の図面が同じ図の中に両方を載せることも珍しくありません。

換算表、インチからミリメートルへ

1 in	25.4 mm
2 in	50.8 mm
5 in	127 mm
10 in	254 mm
20 in	508 mm
50 in	1,270 mm
100 in	2,540 mm
500 in	12,700 mm
1,000 in	25,400 mm

すべての値を表示

1 – 100 101 – 200 205 – 500 510 – 1,000 1,025 – 10,000

1 in = 25.4 mm
2 in = 50.8 mm
3 in = 76.2 mm
4 in = 101.6 mm
5 in = 127 mm
6 in = 152.4 mm
7 in = 177.8 mm
8 in = 203.2 mm
9 in = 228.6 mm
10 in = 254 mm
11 in = 279.4 mm
12 in = 304.8 mm
13 in = 330.2 mm
14 in = 355.6 mm
15 in = 381 mm
16 in = 406.4 mm
17 in = 431.8 mm
18 in = 457.2 mm
19 in = 482.6 mm
20 in = 508 mm
21 in = 533.4 mm
22 in = 558.8 mm
23 in = 584.2 mm
24 in = 609.6 mm
25 in = 635 mm
26 in = 660.4 mm
27 in = 685.8 mm
28 in = 711.2 mm
29 in = 736.6 mm
30 in = 762 mm
31 in = 787.4 mm
32 in = 812.8 mm
33 in = 838.2 mm
34 in = 863.6 mm
35 in = 889 mm
36 in = 914.4 mm
37 in = 939.8 mm
38 in = 965.2 mm
39 in = 990.6 mm
40 in = 1,016 mm
41 in = 1,041.4 mm
42 in = 1,066.8 mm
43 in = 1,092.2 mm
44 in = 1,117.6 mm
45 in = 1,143 mm
46 in = 1,168.4 mm
47 in = 1,193.8 mm
48 in = 1,219.2 mm
49 in = 1,244.6 mm
50 in = 1,270 mm
51 in = 1,295.4 mm
52 in = 1,320.8 mm
53 in = 1,346.2 mm
54 in = 1,371.6 mm
55 in = 1,397 mm
56 in = 1,422.4 mm
57 in = 1,447.8 mm
58 in = 1,473.2 mm
59 in = 1,498.6 mm
60 in = 1,524 mm
61 in = 1,549.4 mm
62 in = 1,574.8 mm
63 in = 1,600.2 mm
64 in = 1,625.6 mm
65 in = 1,651 mm
66 in = 1,676.4 mm
67 in = 1,701.8 mm
68 in = 1,727.2 mm
69 in = 1,752.6 mm
70 in = 1,778 mm
71 in = 1,803.4 mm
72 in = 1,828.8 mm
73 in = 1,854.2 mm
74 in = 1,879.6 mm
75 in = 1,905 mm
76 in = 1,930.4 mm
77 in = 1,955.8 mm
78 in = 1,981.2 mm
79 in = 2,006.6 mm
80 in = 2,032 mm
81 in = 2,057.4 mm
82 in = 2,082.8 mm
83 in = 2,108.2 mm
84 in = 2,133.6 mm
85 in = 2,159 mm
86 in = 2,184.4 mm
87 in = 2,209.8 mm
88 in = 2,235.2 mm
89 in = 2,260.6 mm
90 in = 2,286 mm
91 in = 2,311.4 mm
92 in = 2,336.8 mm
93 in = 2,362.2 mm
94 in = 2,387.6 mm
95 in = 2,413 mm
96 in = 2,438.4 mm
97 in = 2,463.8 mm
98 in = 2,489.2 mm
99 in = 2,514.6 mm
100 in = 2,540 mm

101 in = 2,565.4 mm
102 in = 2,590.8 mm
103 in = 2,616.2 mm
104 in = 2,641.6 mm
105 in = 2,667 mm
106 in = 2,692.4 mm
107 in = 2,717.8 mm
108 in = 2,743.2 mm
109 in = 2,768.6 mm
110 in = 2,794 mm
111 in = 2,819.4 mm
112 in = 2,844.8 mm
113 in = 2,870.2 mm
114 in = 2,895.6 mm
115 in = 2,921 mm
116 in = 2,946.4 mm
117 in = 2,971.8 mm
118 in = 2,997.2 mm
119 in = 3,022.6 mm
120 in = 3,048 mm
121 in = 3,073.4 mm
122 in = 3,098.8 mm
123 in = 3,124.2 mm
124 in = 3,149.6 mm
125 in = 3,175 mm
126 in = 3,200.4 mm
127 in = 3,225.8 mm
128 in = 3,251.2 mm
129 in = 3,276.6 mm
130 in = 3,302 mm
131 in = 3,327.4 mm
132 in = 3,352.8 mm
133 in = 3,378.2 mm
134 in = 3,403.6 mm
135 in = 3,429 mm
136 in = 3,454.4 mm
137 in = 3,479.8 mm
138 in = 3,505.2 mm
139 in = 3,530.6 mm
140 in = 3,556 mm
141 in = 3,581.4 mm
142 in = 3,606.8 mm
143 in = 3,632.2 mm
144 in = 3,657.6 mm
145 in = 3,683 mm
146 in = 3,708.4 mm
147 in = 3,733.8 mm
148 in = 3,759.2 mm
149 in = 3,784.6 mm
150 in = 3,810 mm
151 in = 3,835.4 mm
152 in = 3,860.8 mm
153 in = 3,886.2 mm
154 in = 3,911.6 mm
155 in = 3,937 mm
156 in = 3,962.4 mm
157 in = 3,987.8 mm
158 in = 4,013.2 mm
159 in = 4,038.6 mm
160 in = 4,064 mm
161 in = 4,089.4 mm
162 in = 4,114.8 mm
163 in = 4,140.2 mm
164 in = 4,165.6 mm
165 in = 4,191 mm
166 in = 4,216.4 mm
167 in = 4,241.8 mm
168 in = 4,267.2 mm
169 in = 4,292.6 mm
170 in = 4,318 mm
171 in = 4,343.4 mm
172 in = 4,368.8 mm
173 in = 4,394.2 mm
174 in = 4,419.6 mm
175 in = 4,445 mm
176 in = 4,470.4 mm
177 in = 4,495.8 mm
178 in = 4,521.2 mm
179 in = 4,546.6 mm
180 in = 4,572 mm
181 in = 4,597.4 mm
182 in = 4,622.8 mm
183 in = 4,648.2 mm
184 in = 4,673.6 mm
185 in = 4,699 mm
186 in = 4,724.4 mm
187 in = 4,749.8 mm
188 in = 4,775.2 mm
189 in = 4,800.6 mm
190 in = 4,826 mm
191 in = 4,851.4 mm
192 in = 4,876.8 mm
193 in = 4,902.2 mm
194 in = 4,927.6 mm
195 in = 4,953 mm
196 in = 4,978.4 mm
197 in = 5,003.8 mm
198 in = 5,029.2 mm
199 in = 5,054.6 mm
200 in = 5,080 mm

205 in = 5,207 mm
210 in = 5,334 mm
215 in = 5,461 mm
220 in = 5,588 mm
225 in = 5,715 mm
230 in = 5,842 mm
235 in = 5,969 mm
240 in = 6,096 mm
245 in = 6,223 mm
250 in = 6,350 mm
255 in = 6,477 mm
260 in = 6,604 mm
265 in = 6,731 mm
270 in = 6,858 mm
275 in = 6,985 mm
280 in = 7,112 mm
285 in = 7,239 mm
290 in = 7,366 mm
295 in = 7,493 mm
300 in = 7,620 mm
305 in = 7,747 mm
310 in = 7,874 mm
315 in = 8,001 mm
320 in = 8,128 mm
325 in = 8,255 mm
330 in = 8,382 mm
335 in = 8,509 mm
340 in = 8,636 mm
345 in = 8,763 mm
350 in = 8,890 mm
355 in = 9,017 mm
360 in = 9,144 mm
365 in = 9,271 mm
370 in = 9,398 mm
375 in = 9,525 mm
380 in = 9,652 mm
385 in = 9,779 mm
390 in = 9,906 mm
395 in = 10,033 mm
400 in = 10,160 mm
405 in = 10,287 mm
410 in = 10,414 mm
415 in = 10,541 mm
420 in = 10,668 mm
425 in = 10,795 mm
430 in = 10,922 mm
435 in = 11,049 mm
440 in = 11,176 mm
445 in = 11,303 mm
450 in = 11,430 mm
455 in = 11,557 mm
460 in = 11,684 mm
465 in = 11,811 mm
470 in = 11,938 mm
475 in = 12,065 mm
480 in = 12,192 mm
485 in = 12,319 mm
490 in = 12,446 mm
495 in = 12,573 mm
500 in = 12,700 mm

510 in = 12,954 mm
520 in = 13,208 mm
530 in = 13,462 mm
540 in = 13,716 mm
550 in = 13,970 mm
560 in = 14,224 mm
570 in = 14,478 mm
580 in = 14,732 mm
590 in = 14,986 mm
600 in = 15,240 mm
610 in = 15,494 mm
620 in = 15,748 mm
630 in = 16,002 mm
640 in = 16,256 mm
650 in = 16,510 mm
660 in = 16,764 mm
670 in = 17,018 mm
680 in = 17,272 mm
690 in = 17,526 mm
700 in = 17,780 mm
710 in = 18,034 mm
720 in = 18,288 mm
730 in = 18,542 mm
740 in = 18,796 mm
750 in = 19,050 mm
760 in = 19,304 mm
770 in = 19,558 mm
780 in = 19,812 mm
790 in = 20,066 mm
800 in = 20,320 mm
810 in = 20,574 mm
820 in = 20,828 mm
830 in = 21,082 mm
840 in = 21,336 mm
850 in = 21,590 mm
860 in = 21,844 mm
870 in = 22,098 mm
880 in = 22,352 mm
890 in = 22,606 mm
900 in = 22,860 mm
910 in = 23,114 mm
920 in = 23,368 mm
930 in = 23,622 mm
940 in = 23,876 mm
950 in = 24,130 mm
960 in = 24,384 mm
970 in = 24,638 mm
980 in = 24,892 mm
990 in = 25,146 mm
1,000 in = 25,400 mm

1,025 in = 26,035 mm
1,050 in = 26,670 mm
1,075 in = 27,305 mm
1,100 in = 27,940 mm
1,125 in = 28,575 mm
1,150 in = 29,210 mm
1,175 in = 29,845 mm
1,200 in = 30,480 mm
1,225 in = 31,115 mm
1,250 in = 31,750 mm
1,275 in = 32,385 mm
1,300 in = 33,020 mm
1,325 in = 33,655 mm
1,350 in = 34,290 mm
1,375 in = 34,925 mm
1,400 in = 35,560 mm
1,425 in = 36,195 mm
1,450 in = 36,830 mm
1,475 in = 37,465 mm
1,500 in = 38,100 mm
1,525 in = 38,735 mm
1,550 in = 39,370 mm
1,575 in = 40,005 mm
1,600 in = 40,640 mm
1,625 in = 41,275 mm
1,650 in = 41,910 mm
1,675 in = 42,545 mm
1,700 in = 43,180 mm
1,725 in = 43,815 mm
1,750 in = 44,450 mm
1,775 in = 45,085 mm
1,800 in = 45,720 mm
1,825 in = 46,355 mm
1,850 in = 46,990 mm
1,875 in = 47,625 mm
1,900 in = 48,260 mm
1,925 in = 48,895 mm
1,950 in = 49,530 mm
1,975 in = 50,165 mm
2,000 in = 50,800 mm
2,050 in = 52,070 mm
2,100 in = 53,340 mm
2,150 in = 54,610 mm
2,200 in = 55,880 mm
2,250 in = 57,150 mm
2,300 in = 58,420 mm
2,350 in = 59,690 mm
2,400 in = 60,960 mm
2,450 in = 62,230 mm
2,500 in = 63,500 mm
2,550 in = 64,770 mm
2,600 in = 66,040 mm
2,650 in = 67,310 mm
2,700 in = 68,580 mm
2,750 in = 69,850 mm
2,800 in = 71,120 mm
2,850 in = 72,390 mm
2,900 in = 73,660 mm
2,950 in = 74,930 mm
3,000 in = 76,200 mm
3,050 in = 77,470 mm
3,100 in = 78,740 mm
3,150 in = 80,010 mm
3,200 in = 81,280 mm
3,250 in = 82,550 mm
3,300 in = 83,820 mm
3,350 in = 85,090 mm
3,400 in = 86,360 mm
3,450 in = 87,630 mm
3,500 in = 88,900 mm
3,550 in = 90,170 mm
3,600 in = 91,440 mm
3,650 in = 92,710 mm
3,700 in = 93,980 mm
3,750 in = 95,250 mm
3,800 in = 96,520 mm
3,850 in = 97,790 mm
3,900 in = 99,060 mm
3,950 in = 100,330 mm
4,000 in = 101,600 mm
4,050 in = 102,870 mm
4,100 in = 104,140 mm
4,150 in = 105,410 mm
4,200 in = 106,680 mm
4,250 in = 107,950 mm
4,300 in = 109,220 mm
4,350 in = 110,490 mm
4,400 in = 111,760 mm
4,450 in = 113,030 mm
4,500 in = 114,300 mm
4,550 in = 115,570 mm
4,600 in = 116,840 mm
4,650 in = 118,110 mm
4,700 in = 119,380 mm
4,750 in = 120,650 mm
4,800 in = 121,920 mm
4,850 in = 123,190 mm
4,900 in = 124,460 mm
4,950 in = 125,730 mm
5,000 in = 127,000 mm
5,100 in = 129,540 mm
5,200 in = 132,080 mm
5,300 in = 134,620 mm
5,400 in = 137,160 mm
5,500 in = 139,700 mm
5,600 in = 142,240 mm
5,700 in = 144,780 mm
5,800 in = 147,320 mm
5,900 in = 149,860 mm
6,000 in = 152,400 mm
6,100 in = 154,940 mm
6,200 in = 157,480 mm
6,300 in = 160,020 mm
6,400 in = 162,560 mm
6,500 in = 165,100 mm
6,600 in = 167,640 mm
6,700 in = 170,180 mm
6,800 in = 172,720 mm
6,900 in = 175,260 mm
7,000 in = 177,800 mm
7,100 in = 180,340 mm
7,200 in = 182,880 mm
7,300 in = 185,420 mm
7,400 in = 187,960 mm
7,500 in = 190,500 mm
7,600 in = 193,040 mm
7,700 in = 195,580 mm
7,800 in = 198,120 mm
7,900 in = 200,660 mm
8,000 in = 203,200 mm
8,100 in = 205,740 mm
8,200 in = 208,280 mm
8,300 in = 210,820 mm
8,400 in = 213,360 mm
8,500 in = 215,900 mm
8,600 in = 218,440 mm
8,700 in = 220,980 mm
8,800 in = 223,520 mm
8,900 in = 226,060 mm
9,000 in = 228,600 mm
9,100 in = 231,140 mm
9,200 in = 233,680 mm
9,300 in = 236,220 mm
9,400 in = 238,760 mm
9,500 in = 241,300 mm
9,600 in = 243,840 mm
9,700 in = 246,380 mm
9,800 in = 248,920 mm
9,900 in = 251,460 mm
10,000 in = 254,000 mm

インチの分数

1/16 in	1.59 mm
1/8 in	3.18 mm
3/16 in	4.76 mm
1/4 in	6.35 mm
5/16 in	7.94 mm
3/8 in	9.52 mm
7/16 in	11.11 mm
1/2 in	12.7 mm
9/16 in	14.29 mm
5/8 in	15.88 mm
11/16 in	17.46 mm
3/4 in	19.05 mm
13/16 in	20.64 mm
7/8 in	22.22 mm
15/16 in	23.81 mm
1 in	25.4 mm

係数は SI 文書 (BIPM) および NIST Special Publication 811 による。算出方法と出典.

インチをミリメートルに換算する (in → mm)

インチをミリメートルに換算する方法

この二つの単位が使われる場所

換算表、インチからミリメートルへ

インチの分数

関連する変換

最近の変換履歴