DPI Calculator
Upload an image or enter pixel dimensions and a target print size to calculate the effective print DPI.
Target DPI preset
Effective print DPI
300 DPI horizontal
Keeping the image aspect ratio, the print height would be 6.67 inches. Enter a print height above to check vertical DPI separately.
Excellent for photo-quality printing at close viewing distance.
Poor: below half the target. Good: at least half the target. Excellent: at or above the target. DPI alone does not guarantee print quality.
Reverse calculation — maximum print size at target DPI
At 300 DPI, this image prints up to 10 x 6.67 in.
Pixels required for your chosen print size at 300 DPI: 3000 x px (you have 3000 x 2000 px).
— 3000 px at 10 inches gives exactly 300 DPI.
Image Print Studio
The same studio from the Print DPI page: upload an image, pick a print preset, and check effective DPI, required pixels, cropping and upscaling.
Upload an image to start. It stays in your browser and is never sent to a server.
Privacy: images are decoded and processed only in your browser. They are not uploaded to any server, and temporary object URLs are revoked when you clear the tool.
How to use this calculator
1. Upload an image or type its pixel dimensions. 2. Enter the print width and height and choose inches, centimeters or millimeters. 3. Read the horizontal and vertical DPI, then use a target DPI preset to see the maximum print size.
Formula
Effective DPI = Pixels / Print size in inches. Example: 3000 px / 10 in = 300 DPI.
Worked example: 3000 px wide printed at 10 inches gives 300 DPI.
Frequently asked questions
Is a higher DPI always better?
Not by itself. DPI only matters together with pixel dimensions and print size. A small image printed very large will still look soft, even if you label it 300 DPI.
Does changing DPI metadata add detail?
No. Changing the DPI number in a file changes the intended print size, not the pixels. Detail only comes from having enough pixels.