Inches to Millimeters

Convert inches (in) to millimeters (mm) with formulas, examples, and conversion tables.

in
mm
1 inches (in) = 25.3999611945 millimeters (mm)
Round to:
Step-by-Step Solution
1Write the conversion factor:
1 inch = 25.3999611945 millimeters
2Multiply the value by the conversion factor:
1 × 25.3999611945 = 25.3999611945
3Result:
1 inches (in) = 25.3999611945 millimeters (mm)
↔ Millimeters to Inches

How to Convert inches to millimeters

To convert inches to millimeters, multiply the value by 25.3999611945.

The Formula

millimeters = inches × 25.3999611945

Key Fact

1 inch = 25.3999611945 millimeters

Tip: To convert millimeters back to inches, divide by 25.3999611945.

inches to millimeters Table

inchesmillimeters
1 in25.3999611945 mm
2 in50.799922389 mm
5 in126.999805973 mm
10 in253.999611945 mm
20 in507.99922389 mm
25 in634.999029863 mm
50 in1269.99805973 mm
100 in2539.99611945 mm
250 in6349.99029863 mm
500 in12699.9805973 mm
1000 in25399.9611945 mm

1 inch in Other Units

Unit1 in =
Inches to Points72 pt
Inches to Picas6 pc
Inches to Centimeters2.53999611945 cm
Inches to Millimeters25.3999611945 mm
Inches to Pixels96 px
Inches to Ems6 em
Inches to Root Ems6 rem
Inches to Twips1440 twip
Inches to Ciceros5.63036644302 cc
Inches to Didot Points67.2897196262 dd

Related Conversions

Points to PixelsPixels to PointsPoints to InchesInches to PointsPicas to PointsPoints to PicasPixels to EmEm to PixelsPixels to RemRem to Pixels