Convert Dots per pixel to Pixels per yard

Convert Dots per pixel (dppx) to Pixels per yard (px/yd) instantly and accurately.

Conversion Formula

px/yd = dppx × 3456

About Dots per pixel

The dot per CSS-pixel unit (dppx, or the x descriptor in CSS) is defined in W3C CSS Images Level 3 / Media Queries Level 4 as the ratio of physical device pixels to CSS reference pixels, where the CSS spec fixes 1 CSS inch ≡ 96 CSS px exactly. Therefore 1 dppx = 96 DPI = 96 PPI exactly; a screen reporting device pixel ratio (DPR) of 2 has 2 dppx = 192 physical dots per CSS inch. JavaScript exposes DPR as window.devicePixelRatio, numerically equal to dppx. Reference values: standard laptop (96-110 PPI): 1 dppx; MacBook Pro 13-inch Retina (227 PPI): 2 dppx; iPhone 15 Pro 6.1-inch (460 PPI): 3 dppx; Samsung Galaxy S24 Ultra (501 PPI): ≈ 3.09 dppx. The HTML img srcset x descriptor (photo@2x.jpg 2x) is numerically equal to dppx, serving higher-resolution images for HiDPI screens. The CSS @media (min-resolution: 2dppx) query targets any display with DPR ≥ 2. 1 dppx = 96 DPI = 96 PPI.

About Pixels per yard

The pixel per yard (px/yd) is an imperial resolution unit used in textile printing, wide-format graphics, and fabric digitising, where roll widths and run lengths are measured in yards. The yard is exactly 0.9144 m = 36 in (Weights and Measures Act 1963; NIST Handbook 44), giving 1 px/yd = 1/36 PPI ≈ 0.02778 PPI. Wide-format inkjet printers (Roland RE-640, Mimaki JFX200) resolve up to 1440 DPI = 51,840 px/yd. Fabric digital printers for dye-sublimation operate at 300-600 DPI ≈ 10,800-21,600 px/yd. Flag and banner printing standard for photographic quality at 1 m viewing distance is ≈ 720 px/yd. 1 px/yd = 1/36 PPI ≈ 0.027778 PPI ≈ 1.111 px/m.

Quick Reference Table

→ Full Image Resolution Converter