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Inches to Millimetres (mm)

Convert inches to mm for precision engineering.

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Formula: in × 25.4 = mm
How to use this converter
  1. 1Enter inches.
  2. 2mm appears instantly.
Common questions
0.5 inches = 12.7 mm.
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Millimetres to InchesCentimetres to InchesInches to Centimetres