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Inches to Millimeters
From
Enter the value in inches
To
Value in millimeters
Formula
mm = in × 25.4
Solution
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Answer
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Noticed an error? Please let us
know
.
Reverse conversion from Millimeters to Inches is
available
.
Common Cases
1 inch to mm
? 1 in = 25.4 mm
0.5 inches to mm
? 0.5 in = 12.7 mm
6 inches to mm
? 6 in = 152.4 mm
12 inches to mm
? 12 in = 304.8 mm (1 foot)
36 inches to mm
? 36 in = 914.4 mm (1 yard)
Facts
The inch was originally defined as the width of a man's thumb.
Screen sizes (phones, TVs, monitors) are measured in inches diagonally.
Pipe sizes and bolt sizes in the US are measured in inches.
One inch = 25.4 mm exactly, by international agreement.
Last Updated 2026-02-24 04:00:00 UTC
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