How do I work out print size from pixels?

Divide the pixels by the print resolution in DPI to get inches, then multiply by 2.54 for centimetres. 6000 × 4000 pixels at 300 DPI print at 20 × 13.3 inches, or 50.8 × 33.9 cm.

What DPI do I need for a good print?

300 DPI is the usual standard for prints seen up close. Around 240 DPI is often enough for inkjet prints, and 150 DPI for large prints seen from a distance.

How many pixels do I need for an A4 print?

At 300 DPI, an A4 print (21 × 29.7 cm) needs 2480 × 3508 pixels, about 8.7 megapixels.

Does changing the DPI setting change my photo?

No. The DPI value in a file is only a label for printing; the pixels stay the same. What counts is how many pixels you have for the print size you want.

Free photo tools

Print size and DPI calculator

Enter your photo's size in pixels to see how large it prints, or enter a print size to see the pixels it needs.

Everything is worked out on your device: nothing is uploaded.

From pixels to print size

Width (pixels)

Height (pixels)

Resolution (DPI)

Print size: —
In inches: —
Photo size: —

Largest print from these pixels
Resolution	Centimetres	Inches

From print size to pixels

Print width

Print height

Unit

Resolution (DPI)

Pixels needed: —
Photo size: —

How to use it

Enter the width and height in pixels and a print resolution in DPI.
Read the print size in centimetres and inches, and the largest print at 300, 240 and 150 DPI.
To plan a print, enter its size in centimetres or inches to see the pixels it needs.

Questions

How do I work out print size from pixels?: Divide the pixels by the print resolution in DPI to get inches, then multiply by 2.54 for centimetres. 6000 × 4000 pixels at 300 DPI print at 20 × 13.3 inches, or 50.8 × 33.9 cm.
What DPI do I need for a good print?: 300 DPI is the usual standard for prints seen up close. Around 240 DPI is often enough for inkjet prints, and 150 DPI for large prints seen from a distance.
How many pixels do I need for an A4 print?: At 300 DPI, an A4 print (21 × 29.7 cm) needs 2480 × 3508 pixels, about 8.7 megapixels.
Does changing the DPI setting change my photo?: No. The DPI value in a file is only a label for printing; the pixels stay the same. What counts is how many pixels you have for the print size you want.