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Inches to Millimeters Converter

Convert inches to millimeters instantly with professional accuracy. Free, fast, and precise.

Real-time
High Precision
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in
0
mm
in mm
Enter a value to see the conversion

How to Convert Inches to Millimeters ?

Simple 3-step process

1

Enter Value

Input your measurement in inches

2

Instant Result

Get immediate conversion to millimeters

3

Use Results

Apply accurate conversions to your projects

Common Inches to Millimeters Conversions

Popular conversion values for quick reference

1
in
25.4
mm
5
in
127
mm
10
in
254
mm
25
in
635
mm
50
in
1,270
mm
100
in
2,540
mm
Conversion Formula

Mathematical Formula

1 in = 25.4 mm
To convert inches to millimeters, multiply your value by 25.4

Inches to Millimeters Conversion Table

Quick reference for common values

Inches
(in)
Millimeters
(mm)
1 in
25.4 mm
2 in
50.8 mm
3 in
76.2 mm
4 in
101.6 mm
5 in
127.0 mm
6 in
152.4 mm
7 in
177.8 mm
8 in
203.2 mm
9 in
228.6 mm
10 in
254.0 mm
11 in
279.4 mm
12 in
304.8 mm
13 in
330.2 mm
14 in
355.6 mm
15 in
381.0 mm
16 in
406.4 mm
17 in
431.8 mm
18 in
457.2 mm
19 in
482.6 mm
20 in
508.0 mm
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Frequently Asked Questions

How do I convert inches to millimeters?

To convert inches to millimeters, simply enter the value in our calculator above. The conversion is done automatically using the precise conversion factor.

What is the conversion factor from inches to millimeters?

The conversion relationship between inches and millimeters is calculated using internationally recognized standards for maximum accuracy.

Is this inches to millimeters converter free to use?

Yes! Our converter is completely free with no registration required. You can perform unlimited conversions without any restrictions.