Pair · linear · factor 25.4
inches to millimeters
inmm
Active unit
inches · ≈ 2.54 m (base)
All units
7 results- ininch100
How we calculated this
Target:
Formula
mm = in × 25.4
Calculation
100 × 25.4 = 2,540
Factor
× 25.4
inAbout: inch
Historically the width of an adult man's thumb. Today standardized to exactly 2.54 cm by the 1959 international agreement.
mmAbout: millimeter
One thousandth of a meter. The standard unit in precision engineering, medicine and 3D printing.