Inches to Millimeters converter

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in to mm conversion table

Starting Value

Increment

Precision

in	mm
1	25.4
2	50.8
3	76.2
4	101.6
5	127
6	152.4
7	177.8
8	203.2
9	228.6
10	254
11	279.4
12	304.8
13	330.2
14	355.6
15	381
16	406.4
17	431.8
18	457.2
19	482.6
20	508
21	533.4
22	558.8
23	584.2
24	609.6
25	635
26	660.4
27	685.8
28	711.2
29	736.6
30	762
31	787.4
32	812.8
33	838.2
34	863.6
35	889
36	914.4
37	939.8
38	965.2
39	990.6
40	1016
41	1041.4
42	1066.8
43	1092.2
44	1117.6
45	1143
46	1168.4
47	1193.8
48	1219.2
49	1244.6
50	1270
51	1295.4
52	1320.8
53	1346.2
54	1371.6
55	1397
56	1422.4
57	1447.8
58	1473.2
59	1498.6
60	1524
61	1549.4
62	1574.8
63	1600.2
64	1625.6
65	1651
66	1676.4
67	1701.8
68	1727.2
69	1752.6
70	1778
71	1803.4
72	1828.8
73	1854.2
74	1879.6
75	1905
76	1930.4
77	1955.8
78	1981.2
79	2006.6
80	2032
81	2057.4
82	2082.8
83	2108.2
84	2133.6
85	2159
86	2184.4
87	2209.8
88	2235.2
89	2260.6
90	2286
91	2311.4
92	2336.8
93	2362.2
94	2387.6
95	2413
96	2438.4
97	2463.8
98	2489.2
99	2514.6
100	2540
101	2565.4
102	2590.8
103	2616.2
104	2641.6
105	2667
106	2692.4
107	2717.8
108	2743.2

To convert inches to millimeters, enter the value in the first field. The result in millimeters is calculated automatically using the exact conversion factor.

1 in = 25.4 mm
1 mm ≈ 0.0393700787402 in

Formula: mm = in × 25.4
in ≈ mm × 0.0393700787402

Definitions: 1 in = 0.0254 m; 1 mm = 0.001 m

The inch (in) is defined as exactly 25.4 millimeters. It is used in the United States and, for some measurements, in the United Kingdom, and screen diagonals, tire sizes and pipe sizes are quoted in inches around the world.

The millimeter (mm) is one thousandth of a meter. It is the standard unit for small dimensions in engineering drawings, machining and manufacturing, and for measuring rainfall depth.

See the conversion table with commonly used values, handy for quick reference or study.

Inches to Millimeters converter

in to mm conversion table

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