Converters & Utilities
Inches ↔ Millimeters Converter
Convert between inches and millimeters for fixture dimensions, cable lengths, aperture sizes, and cut-out dimensions. Swap direction anytime.
Inches
in
⇄
Millimeters
25.400
mm
Visual Ruler
010 in / 254 mm
1 inch
= 25.4 mm
4″ downlight aperture
= 101.6 mm
6″ downlight aperture
= 152.4 mm
12″ / 1 foot
= 304.8 mm
100 mm
= 3.937 in
600 mm panel (2 ft)
= 23.622 in
Reference Table
ApplicationInchesmm
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