Inches → MM

1.25 inches to mm

1.25 inches equals 31.75 millimeters.

Millimeters

31.75 mm

Centimeters

3.175 cm

Meters

0.03175 m

Feet

0.1042 ft

Inches (in)

Millimeters (mm)

31.75

1 in = 25.4 mm · tolerance ±0.0001

Nearby values

1.26″1.27″1.2″1.3″1.18″1.34″1.35″1.37″1.125″1.375″

Precision

1.25

Inches

31.8 mm · max 100

Ref · 25.4 mm/in

Drag to set

Formula

mm = inches × 25.4
mm = 1.25 × 25.4 = 31.75

Why 1.25 in = 31.75 mm

The international inch is defined as exactly 25.4 mm, so any inches-to-mm conversion is a clean multiplication with no rounding required at this precision.