Print Size / PPI Calculator

Switch between three modes to plan prints, calculate required pixels, or determine resulting PPI. Essential for photographers preparing work for galleries and clients.

Result
Aspect ratio note
Assumptions

PPI = pixels ÷ inches. When using centimeters, values are converted to inches. Aspect ratio mismatch indicates cropping or padding.

Worked Example

Scenario: Gallery exhibition planning with 24MP full-frame images

Image size: 6000×4000 pixels from camera

Desired print: 20×13 inches at 300 PPI for fine art quality

Result: Need 6000×3900 pixels (current image works perfectly!)

Alternative: At current pixels, max size is 20×13.3 inches at 300 PPI

PPI Guidelines

300 PPI
Fine art prints, close viewing, gallery work
240 PPI
Photo lab standard, professional prints
200 PPI
Large format prints, normal viewing distance
150 PPI
Posters, banners, far viewing distance
100-120 PPI
Large format displays, billboards

FAQ

What PPI should I use?

300 PPI is safe for high-quality prints, while 200 PPI works well for larger sizes viewed from farther away.

Why don't my aspect ratios match?

Your image dimensions don't match the print dimensions—you'll need to crop the image or add borders.

Can I go lower than 200 PPI?

Yes, but quality depends on viewing distance. Posters at 150 PPI look fine from several feet away.

How do I handle aspect ratio mismatches?

Either crop your image to match the print ratio, or choose a print size that matches your image ratio.

What about DPI vs PPI?

PPI (pixels per inch) is for digital images. DPI (dots per inch) is for printers. For photography planning, use PPI.

Related Tools

Field of View Calculator · Crop Factor Calculator · Aspect Ratio Calculator

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