Inches to millimeters

1/8" = 3.175 mm

Millimeters
3.175
mm
Fraction
1/8"
Feet & inches
0.125"
Formula
0.125 × 25.4
051015202530354045505560657075808590951000"1"2"3"mmin

Tip: click or drag on the ruler to set the value.

How to convert

Multiply the inch value by 25.4 to get millimeters.

0.125 in × 25.4 = 3.175 mm

Quick facts

  • Millimeters3.175 mm
  • Centimeters0.318 cm
  • Meters0.00318 m
  • As fraction1/8"