🖨️ Photo Print Size Calculator
Match your file to your frame. Enter pixel dimensions and a DPI to see the print size in inches and centimetres, or start from a print size to find the pixels you need — plus the megapixels behind it.
🖨️ Pixels ↔ Print Size
What is a Photo Print Size Calculator?
It converts between the digital and physical worlds. Feed it your image's pixel dimensions and the DPI you'll print at, and it tells you how large the print will be in inches and centimetres; work the other way and it tells you how many pixels a given print demands.
Use it to check a photo is big enough for that gallery frame before you order, to size crops for a print lab, or to sanity-check whether a phone shot will hold up enlarged on the wall.
❓ Frequently Asked Questions
What DPI should I use for photo prints?
300 DPI (dots per inch) is the standard for high-quality photo prints viewed up close, such as albums, portraits, and small framed pieces. Large prints seen from a distance — posters, canvases, banners — look perfectly sharp at 150–240 DPI, because your eye can't resolve individual dots from further away.
How do I know the biggest print my photo can make?
Divide each pixel dimension by your target DPI. A 6000 × 4000 pixel image at 300 DPI prints a crisp 20 × 13.3 inches; drop to 200 DPI and the same file comfortably covers 30 × 20 inches. This tool does that maths both ways so you can match a file to a frame instantly.
How many megapixels do I need for a given print?
Multiply the pixel dimensions you need and divide by one million. An 8 × 10 inch print at 300 DPI needs 2400 × 3000 pixels, which is 7.2 megapixels — well within any modern camera or recent phone. Bigger prints or higher DPI raise the requirement proportionally.
What's the difference between DPI and PPI?
PPI (pixels per inch) describes an image's on-screen pixel density, while DPI (dots per inch) describes a printer's output density. In everyday photo printing the two are used interchangeably, and this calculator treats your entered DPI as the pixels-per-inch mapping between the digital file and the physical print.