in to mm Converter

Inch → Millimeter

1 in = 25.4 mm

Multiply by 25.4 to convert in to mm

in
mm
💡Did you know?
  • 1 inch ≈ width of a thumb
  • 1 inch = 2.54cm (exact)

Related Length Conversions

in → cmcm → mm
in → mm → mm
in → kmkm → mm
in → ftft → mm
in → ydyd → mm
in → mimi → mm
in → nmnm → mm
in → μmμm → mm
in → 리리 → mm
in → 尺尺 → mm
in → 間間 → mm
in → 里里 → mm

All Length Conversions

mm → cmmm → mmm → kmmm → inmm → ftmm → ydmm → mimm → nmmm → μmmm → 리mm → 尺mm → 間mm → 里cm → mmcm → mcm → kmcm → incm → ftcm → ydcm → micm → nmcm → μmcm → 리cm → 尺cm → 間cm → 里m → mmm → cmm → kmm → inm → ftm → ydm → mim → nmm → μmm → 리m → 尺m → 間m → 里km → mmkm → cmkm → mkm → inkm → ftkm → ydkm → mikm → nmkm → μmkm → 리km → 尺km → 間km → 里in → mmin → cmin → min → kmin → ftin → ydin → miin → nmin → μmin → 리in → 尺in → 間in → 里ft → mmft → cmft → mft → kmft → inft → ydft → mift → nmft → μmft → 리ft → 尺ft → 間ft → 里yd → mmyd → cmyd → myd → kmyd → inyd → ftyd → miyd → nmyd → μmyd → 리yd → 尺yd → 間yd → 里mi → mmmi → cmmi → mmi → kmmi → inmi → ftmi → ydmi → nmmi → μmmi → 리mi → 尺mi → 間mi → 里nm → mmnm → cmnm → mnm → kmnm → innm → ftnm → ydnm → minm → μmnm → 리nm → 尺nm → 間nm → 里μm → mmμm → cmμm → mμm → kmμm → inμm → ftμm → ydμm → miμm → nmμm → 리μm → 尺μm → 間μm → 里리 → mm리 → cm리 → m리 → km리 → in리 → ft리 → yd리 → mi리 → nm리 → μm리 → 尺리 → 間리 → 里尺 → mm尺 → cm尺 → m尺 → km尺 → in尺 → ft尺 → yd尺 → mi尺 → nm尺 → μm尺 → 리尺 → 間尺 → 里間 → mm間 → cm間 → m間 → km間 → in間 → ft間 → yd間 → mi間 → nm間 → μm間 → 리間 → 尺間 → 里里 → mm里 → cm里 → m里 → km里 → in里 → ft里 → yd里 → mi里 → nm里 → μm里 → 리里 → 尺里 → 間
What is a Inch (in)?What is a Millimeter (mm)?

How to Convert Inch to Millimeter

Inch (in) is a unit of Length. It is commonly used in science, engineering, and everyday measurements.

Millimeter (mm) is a unit of Length. It is commonly used in science, engineering, and everyday measurements.

Conversion Formula

1 in = 25.4 mm

Multiply by 25.4

Step-by-step: How to convert Inch to Millimeter

  1. Start with your value in Inch (in).
  2. Multiply the value by 25.4 (the conversion factor).
  3. The result is your value in Millimeter (mm).

Conversion Examples

1 in=25.4 mm
2 in=50.8 mm
5 in=127 mm
10 in=254 mm
25 in=635 mm
50 in=1,270 mm
100 in=2,540 mm
250 in=6,350 mm
500 in=12,700 mm
1000 in=25,400 mm

Converting Millimeter to Inch

1 mm = 0.039 in

To convert in the opposite direction, from Millimeter to Inch, multiply by 0.039.

When do you need this conversion?

Converting between Inch (in) and Millimeter (mm) is frequently needed in daily life, science, engineering, cooking, and international trade. Understanding this conversion helps ensure accuracy in measurements.

Quick comparison with related units

1 in = 25.4 mm

1 in = 2.54 cm (Centimeter)

1 in = 0.025 m (Meter)

1 in = 0 km (Kilometer)

1 in = 0.083 ft (Foot)

1 in = 0.028 yd (Yard)

Inch to Millimeter Conversion Table

Inch (in)Millimeter (mm)
0.1 in2.54 mm
0.5 in12.7 mm
1 in25.4 mm
2 in50.8 mm
5 in127 mm
10 in254 mm
25 in635 mm
50 in1,270 mm
100 in2,540 mm
250 in6,350 mm
500 in12,700 mm
1,000 in25,400 mm

Inch 1-100 → Millimeter

Inch (in)Millimeter (mm)
1 in25.4 mm
2 in50.8 mm
3 in76.2 mm
4 in101.6 mm
5 in127 mm
6 in152.4 mm
7 in177.8 mm
8 in203.2 mm
9 in228.6 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
51 in1,295.4 mm
52 in1,320.8 mm
53 in1,346.2 mm
54 in1,371.6 mm
55 in1,397 mm
56 in1,422.4 mm
57 in1,447.8 mm
58 in1,473.2 mm
59 in1,498.6 mm
60 in1,524 mm
61 in1,549.4 mm
62 in1,574.8 mm
63 in1,600.2 mm
64 in1,625.6 mm
65 in1,651 mm
66 in1,676.4 mm
67 in1,701.8 mm
68 in1,727.2 mm
69 in1,752.6 mm
70 in1,778 mm
71 in1,803.4 mm
72 in1,828.8 mm
73 in1,854.2 mm
74 in1,879.6 mm
75 in1,905 mm
76 in1,930.4 mm
77 in1,955.8 mm
78 in1,981.2 mm
79 in2,006.6 mm
80 in2,032 mm
81 in2,057.4 mm
82 in2,082.8 mm
83 in2,108.2 mm
84 in2,133.6 mm
85 in2,159 mm
86 in2,184.4 mm
87 in2,209.8 mm
88 in2,235.2 mm
89 in2,260.6 mm
90 in2,286 mm
91 in2,311.4 mm
92 in2,336.8 mm
93 in2,362.2 mm
94 in2,387.6 mm
95 in2,413 mm
96 in2,438.4 mm
97 in2,463.8 mm
98 in2,489.2 mm
99 in2,514.6 mm
100 in2,540 mm

Frequently Asked Questions

How many Millimeter is 1 Inch (in)?
1 Inch = 25.4 Millimeter (mm)
What is the formula to convert Inch to Millimeter?
To convert Inch to Millimeter, multiply the value by 25.4.
How many Millimeter is 10 Inch (in)?
10 Inch = 254 Millimeter (mm)
How many Millimeter is 100 Inch (in)?
100 Inch = 2540 Millimeter (mm)
Conversely, how many Inch is 1 Millimeter?
1 Millimeter = 0.0393701 Inch (in)

Calculators

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Millimeter to Inch Conversion Table

Millimeter (mm)Inch (in)
0.1 mm0.004 in
0.5 mm0.02 in
1 mm0.039 in
2 mm0.079 in
5 mm0.197 in
10 mm0.394 in
25 mm0.984 in
50 mm1.969 in
100 mm3.937 in
250 mm9.843 in
500 mm19.685 in
1,000 mm39.37 in
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