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Image dimensions · Print planning

Image DPI & print size calculator

Find out how large an image can print, or calculate the pixel dimensions needed for a target paper size. No upload required.

Calculate print size or required pixels

Choose a calculation, enter dimensions and get an instant estimate.

Instant result
Estimated print size
10 × 8 in
At 300 PPI, before any crop or resampling.

PPI describes image pixels per inch of print. Printer DPI describes ink or toner dots and is not the same measurement. A calculation cannot guarantee sharpness; focus, paper, viewing distance and resampling also matter.

How the calculator works

For a print-size estimate, divide each pixel dimension by the target PPI. To find required pixels, multiply the physical print dimensions by PPI. The result is a planning estimate, not an image edit.

Print size (inches) = pixels ÷ PPI
Required pixels = print size (inches) × PPI

Example: an 8 × 10 inch print

At 300 PPI, an 8 × 10 inch print needs 2400 × 3000 pixels. A 3000 × 2400 image has a 5:4 landscape ratio, so it does not match an 8 × 10 portrait print without rotating or cropping.

Frequently asked questions

Does changing DPI add image detail?

No. Changing a metadata resolution value alone does not create pixels or restore detail. Resampling changes pixel dimensions, but cannot recover detail that was never captured.

Is 300 PPI always required?

No. It is a common target for close-viewed photo prints. Larger prints viewed from farther away can work at lower pixel density.

Why is PPI different from printer DPI?

PPI describes image pixels placed across an inch of the print. A printer may use multiple ink dots to reproduce each image pixel.

Learn about print resolution ↗