Print Size Calculator
A 3000×2000 photo is not "big" or "small" until you pick a print quality. Choose a DPI — 300 for close-up print, 150 for a poster, 72 for screen equivalence — and see the physical size your pixels cover, in inches, centimetres and millimetres.
- Print size (inches)
- 10.00 × 6.67 in
- Print size (cm)
- 25.4 × 16.9 cm
- Print size (mm)
- 254 × 169 mm
The maths: DPI = pixels ÷ inches. A pixel count alone is never 300 DPI — DPI only exists once a physical print size is chosen. Screens, by contrast, just use pixels.
How to print Size Calculator
- Enter the image width and height in pixels.
- Choose or type a DPI.
- Read the print size in your preferred unit.
Frequently asked questions
What size is a phone photo in print?
A typical 4000×3000 phone photo at 300 DPI prints at about 13.3×10 inches (34×25 cm) — comfortably A4-ish. At poster quality (150 DPI) it reaches roughly A3.
Why do labs ask for 300 DPI files?
At normal reading distance, 300 dots per inch is around the limit of what the eye can resolve, so prints look continuous rather than pixelly.
Related tools
DPI CalculatorEffective DPI at any print size — and the pixels needed to hit 300 DPI.Aspect Ratio CalculatorTurn any width×height into its ratio, and compute matching sizes that keep it.Passport Photo MakerCountry-preset ID photos at exact print size, with the official source for every spec — plus print sheets.