PrintDPIPhoto Print Size Calculator
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Required Resolution Calculator

Find the pixels you need for a given print size.

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Results

Pixels needed—
Width needed—
Height needed—
Megapixels needed—

Print size = pixels ÷ DPI.

How it works

Pixels needed = print size × DPI. We multiply your print dimensions by the target DPI to find the exact pixel dimensions and megapixels required for a sharp print.

Planning a big print? Check your camera’s megapixels meet the requirement before you order.

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Good to know

FAQs

How many pixels do I need to print?

Multiply each print dimension (inches) by your target DPI. 20×30 in at 300 DPI needs 6000×9000 px.

How many megapixels for a 16×20 print?

About 28.8 MP at 300 DPI (4800×6000).

Can I upscale a small image?

Software upscaling helps a little, but it can’t add true detail.

What DPI for large posters?

150 DPI is often fine for posters viewed from a distance.

Why does my phone photo look soft when large?

Phone images may lack the pixels for big prints at 300 DPI.