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Inches to millimeters

Convert inches to millimeters, with the math shown step by step.

Millimeters
0 mm

0 in = 0 mm

Also equals

How it works

mm = in × 25.4

One inch is exactly 25.4 millimeters, so multiplying by 25.4 turns inches into millimeters. You can type fractions like 1 1/2 too.

  1. Multiply by 25.4 0 × 25.4 = 0 mm

Nearby values

Inches Millimeters Centimeters Meters
0 in 0 mm 0 0
1 in 25.4 mm 2.54 0.03
2 in 50.8 mm 5.08 0.05
3 in 76.2 mm 7.62 0.08