Pixels to Inches Converter
Pixels have no fixed physical size — how many fit in an inch depends on the screen or print resolution (PPI). Enter your pixels, pick a PPI, and get inches and centimeters.
Example: with Pixels (px) 1000 · Resolution (PPI / DPI) 96 PPI (CSS default) · Custom PPI (pixels per inch) 220 → Inches: 10.42 in.
Computed by the calculator below using its default values. Change any input to see your own numbers.
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Check it outHow many pixels in an inch?
There is no universal answer — a pixel is just a dot on a grid, so px to inches always needs a resolution in pixels per inch (PPI). At the CSS default of 96 PPI, 1,000 px = 10.42 in; the same 1,000 px printed at 300 PPI is only 3.33 in. That’s why an image that fills your monitor can print smaller than a postcard.
To convert pixels to inches for a real device, find its PPI first: divide the diagonal resolution by the diagonal size. A 27-inch QHD monitor (2560 × 1440) works out to about 109 PPI, so a 500 px element is 500 ÷ 109 ≈ 4.6 inches wide on that screen. For print work, designers use 300 PPI as the quality standard — a 4 × 6 inch photo needs 1200 × 1800 px.
How it’s calculated
Inches = pixels ÷ PPI (pixels per inch); centimeters = inches × 2.54, the exact definition of the inch. The presets cover 72 PPI (legacy web/macOS), 96 PPI (the CSS reference resolution, 1 in = 96 px), and 150/300 PPI print standards; the custom option accepts any measured device PPI.
Results update as you type and are estimates, not professional advice — verify important decisions with a qualified professional.
Common mistakes
- Assuming every screen is 96 PPI — modern phones run 400+ PPI, so on-screen inches vary by device.
- Confusing printer DPI (ink dots) with image PPI (pixels) — a 300 PPI photo can be printed on a 1200 DPI printer.
- Resizing a photo for print without checking pixels: at 300 PPI, an 8 × 10 in print needs 2400 × 3000 px.
Frequently asked questions
How many pixels are in an inch?
It depends on resolution. CSS defines 96 px per inch for web layouts, classic print work uses 300 PPI, and physical screens range from about 100 PPI (desktop monitors) to 450+ PPI (phones).
How do I convert px to inches for printing?
Divide the pixel dimension by your print resolution, usually 300 PPI. A 1500 px wide image prints 1500 ÷ 300 = 5 inches wide at full quality.
How do I find my screen's real PPI?
Divide the diagonal resolution in pixels by the diagonal size in inches. A 15.6-inch 1920 × 1080 laptop has a 2203 px diagonal, so 2203 ÷ 15.6 ≈ 141 PPI.
Is a pixel to inch conversion ever exact?
Only at a stated PPI. Pixels are dimensionless grid units; once you fix a resolution like 96 or 300 PPI, the math is exact division.