Convert Pixels per foot to Dots per centimetre

Convert Pixels per foot (px/ft) to Dots per centimetre (dpcm) instantly and accurately.

Conversion Formula

dpcm = px/ft × 0.03280839895

About Pixels per foot

The pixel per foot (px/ft) is an imperial resolution unit used in architectural visualisation, large-format display engineering, and document scanning where distances are measured in feet. The foot is exactly 0.3048 m = 12 in (international foot, 1959), giving 1 px/ft = 1/12 PPI ≈ 0.08333 PPI. Microfilm scanners for engineering drawing digitisation (ANSI/AIIM MS23) are specified in px/ft; a 200 px/ft scan of a 24-inch D-size drawing yields 400 pixels across the 2-foot width. Outdoor LED walls at P6 pixel pitch (6 mm) covering one foot ≈ 50.8 px/ft. Building plans at 1:48 scale reduce 1 actual foot to 0.25 in on paper, requiring ≥ 3 px/ft for legibility. 1 px/ft = 1/12 PPI ≈ 0.083333 PPI ≈ 3.281 px/m.

About Dots per centimetre

The dot per centimetre (dpcm) is the metric equivalent of DPI, defined as a CSS resolution unit in the W3C CSS Images Level 3 specification alongside dpi and dppx. A 96 DPI reference screen (CSS Media Queries Level 4 reference device) corresponds to 96/2.54 ≈ 37.795 dpcm. ITU-T T.4 (Group 3 facsimile, 1980) defines scan line density in metric units: standard resolution 3.85 lines/mm = 38.5 dpcm; fine resolution 7.7 lines/mm = 77 dpcm. ITU-T T.85 (JBIG compression) standardised these metric resolutions for cross-border interoperability. ISO 216 A4 scanned at 77 dpcm fine fax resolution yields 1617 pixels across page width. The CSS specification recommends dppx over dpcm for screen media queries, reserving dpcm for print stylesheets targeting metric-resolution printers. 1 dpcm = 2.54 DPI = 2.54 PPI exactly (since 1 in = 2.54 cm). 1 dpcm = 0.1 dot/mm.

Quick Reference Table

→ Full Image Resolution Converter