Convert Pixels per foot to Pixels per metre
Convert Pixels per foot (px/ft) to Pixels per metre (px/m) instantly and accurately.
Conversion Formula
px/m = px/ft × 3.280839895
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 Pixels per metre
The pixel per metre (px/m) is the SI-coherent form of image resolution. Because 1 inch = 0.0254 m exactly (international inch, 1959), 1 PPI = 1/0.0254 ≈ 39.37 px/m and 1 px/m = 0.0254 PPI. EXIF (IEC 61966-3) stores resolution as pixels per inch (ResolutionUnit = 2) or pixels per centimetre (ResolutionUnit = 3); px/m is used when normalising to SI for scientific or GIS workflows. Satellite remote-sensing GSD is often given in metres per pixel (the inverse); WorldView-3 at 0.31 m/px panchromatic ≈ 3.23 px/m. An A4 document scanned at 300 PPI ≈ 11,811 px/m. 1 px/m = 0.0254 PPI ≈ 0.00254 px/cm.
Quick Reference Table
| Pixels per foot (px/ft) | Pixels per metre (px/m) |
|---|---|
| 1 px/ft | 3.28084 px/m |
| 2 px/ft | 6.56168 px/m |
| 5 px/ft | 16.4042 px/m |
| 10 px/ft | 32.8084 px/m |
| 25 px/ft | 82.021 px/m |
| 50 px/ft | 164.042 px/m |
| 100 px/ft | 328.084 px/m |