Inches to Millimeters (inches to mm) Converter – Online Tool

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1 inch = 25.4 mm

inches

mm

inches to mm conversion table

inches (in)
millimeter (mm)
1
25.40
2
50.80
3
76.20
4
101.60
5
127.00
6
152.40
7
177.80
8
203.20
9
228.60
10
254.00
11
279.40
12
304.80
13
330.20
14
355.60
15
381.00
16
406.40
17
431.80
18
457.20
19
482.60
20
508.00
21
533.40
22
558.80
23
584.20
24
609.60
25
635.00
26
660.40
27
685.80
28
711.20
29
736.60
30
762.00
31
787.40
32
812.80
33
838.20
34
863.60
35
889.00
36
914.40
37
939.80
38
965.20
39
990.60
40
1,016.00
41
1,041.40
42
1,066.80
43
1,092.20
44
1,117.60
45
1,143.00
46
1,168.40
47
1,193.80
48
1,219.20
49
1,244.60
50
1,270.00
51
1,295.40
52
1,320.80
53
1,346.20
54
1,371.60
55
1,397.00
56
1,422.40
57
1,447.80
58
1,473.20
59
1,498.60
60
1,524.00
61
1,549.40
62
1,574.80
63
1,600.20
64
1,625.60
65
1,651.00
66
1,676.40
67
1,701.80
68
1,727.20
69
1,722.60
70
1,778.00
71
1,803.40
72
1,828.80
73
1,854.20
74
1,879.60
75
1,905.00
76
1,930.40
77
1,955.80
78
1,981.20
79
2,006.60
80
2,032.00
81
2,057.40
82
2,082.80
83
2,108.20
84
2,133.60
85
2,159.00
86
2,184.40
87
2,209.80
88
2,235.20
89
2,260.60
90
2,286.00
91
2,311.40
92
2,336.80
93
2,362.20
94
2,387.60
95
2,413.00
96
2,438.40
97
2,463.80
98
2,489.20
99
2,514.60
100
2,540.00

How many millimeters are in a inch?

Do you know how many millimeters are in a inch?

In other words,

1 inch = (?) millimeters

It’s simple.

There are 25.4 millimeters in one inch.

Mathematically,

1 inch = 25.4 millimeters

How to convert inches to mm?

How will you convert the value of inches into mm?

Well, the answer is so simple.

Just multiply the value of inches with the number, 25.4.

Take a look at the formula mentioned below, so you’ll get an exact idea.

inches to mm formula

Whatever value of inch you want to convert, just multiply that value with the number 25.4.

The general formula for inches to mm conversion can be given as follows:

___ inch = ___ × 25.4 millimeters

Example: convert 1 inches to mm

To convert 1 inches into mm, multiply the digit 1 with 25.4.

i.e.,

1 inch = 1 × 25.4 millimeters

Therefore,

1 inch = 25.4 millimeters

Similarly, you can convert any value of inches into mm.

Related: Convert 12 inches to mm

A quick look on inches to mm conversion

To convert
Multiply by
inches to mm
25.4
mm to inches
0.0393700787

To convert inches to mm, multiply the value of inches with 25.4.

Similarly,

To convert mm to inches, multiply the value of mm with 0.0373700787.

inches to mm conversion chart

inches (in)
millimeter (mm)
1
25.4
10
254
100
2,540
1,000
25,400
2,000
50,800
3,000
76,200
4,000
101,600
5,000
127,000
6,000
152,400
7,000
177,800
8,000
203,200
9,000
228,600
10,000
254,000

1 inch (in) in other units

1 inch equals to
25.4 millimeters
2.54 centimeters
0.0254 meters
2.54 × 10-5 kilometers
25,400 micrometers
2.54 × 107 nanometers
1.5782 × 10-5 miles
0.0277777778 yards
0.0833333333 feet
1.3714 × 10-5 nautical miles
2.684 × 10-18 light-years