Convert inches to millimeters

Convert in to mm (Swap)

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Guide

How to convert inches into millimeters?

To convert inches into millimeters, preform the following calculations:

1 in = 25.4 mm

distance in inches × 25.4 = distance in millimeters

Example:

15 in

15 inches × 25.4 = 381 millimeters

How many millimeters in a inch?

There are 25.4 millimeters in a inch.

How many inches in a millimeter?

There are 0.03937 inches in a millimeter.

Visual representation of inches and millimeters

Below is a scale diagram of 1 inch to 1 millimeter:

1 in1 mm


Value Chart

Inches (in)Millimeters (mm)
0 in0 mm
0.01 in0.254 mm
0.1 in2.54 mm
0.2 in5.08 mm
0.3 in7.62 mm
0.4 in10.16 mm
0.5 in12.7 mm
0.6 in15.24 mm
0.7 in17.78 mm
0.8 in20.32 mm
0.9 in22.86 mm
1 in25.4 mm
1.2 in30.48 mm
1.4 in35.56 mm
1.6 in40.64 mm
1.8 in45.72 mm
2 in50.8 mm
2.2 in55.88 mm
2.4 in60.96 mm
2.6 in66.04 mm
2.8 in71.12 mm
3 in76.2 mm
3.2 in81.28 mm
3.4 in86.36 mm
3.6 in91.44 mm
3.8 in96.52 mm
4 in101.6 mm
4.2 in106.68 mm
4.4 in111.76 mm
4.6 in116.84 mm
4.8 in121.92 mm
5 in127 mm
5.5 in139.7 mm
6 in152.4 mm
6.5 in165.1 mm
7 in177.8 mm
7.5 in190.5 mm
8 in203.2 mm
8.5 in215.9 mm
9 in228.6 mm
9.5 in241.3 mm
10 in254 mm
11 in279.4 mm
12 in304.8 mm
13 in330.2 mm
14 in355.6 mm
15 in381 mm
16 in406.4 mm
17 in431.8 mm
18 in457.2 mm
19 in482.6 mm
20 in508 mm
21 in533.4 mm
22 in558.8 mm
23 in584.2 mm
24 in609.6 mm
25 in635 mm
26 in660.4 mm
27 in685.8 mm
28 in711.2 mm
29 in736.6 mm
30 in762 mm
31 in787.4 mm
32 in812.8 mm
33 in838.2 mm
34 in863.6 mm
35 in889 mm
36 in914.4 mm
37 in939.8 mm
38 in965.2 mm
39 in990.6 mm
40 in1,016 mm
41 in1,041.4 mm
42 in1,066.8 mm
43 in1,092.2 mm
44 in1,117.6 mm
45 in1,143 mm
46 in1,168.4 mm
47 in1,193.8 mm
48 in1,219.2 mm
49 in1,244.6 mm
50 in1,270 mm
52 in1,320.8 mm
54 in1,371.6 mm
56 in1,422.4 mm
58 in1,473.2 mm
60 in1,524 mm
62 in1,574.8 mm
64 in1,625.6 mm
66 in1,676.4 mm
68 in1,727.2 mm
70 in1,778 mm
72 in1,828.8 mm
74 in1,879.6 mm
76 in1,930.4 mm
78 in1,981.2 mm
80 in2,032 mm
82 in2,082.8 mm
84 in2,133.6 mm
86 in2,184.4 mm
88 in2,235.2 mm
90 in2,286 mm
92 in2,336.8 mm
94 in2,387.6 mm
96 in2,438.4 mm
98 in2,489.2 mm
100 in2,540 mm

Sources & References

UnitSwap uses sources (which are listed below) to ensure the best accuracy on conversions. See more information about reliable sources and conversion accuracy here.

Inches definition source: en.wikipedia.org
Millimeters definition source: en.wikipedia.org

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