Image DPI & Print Size Calculator
Calculate the physical print dimensions of an image in inches and centimeters from its pixel resolution and DPI, or find the required pixel dimensions for any print size.
Print size
How to use Image DPI & Print Size Calculator
- 1Select your calculation mode: "Pixels → Print size" or "Print size → Pixels".
- 2If converting pixels to print size, enter your image width and height in pixels along with your printer DPI (default: 300).
- 3If calculating required pixels, enter target print width and height in inches and specify target DPI.
- 4Review the computed dimensions in inches, centimeters, or required pixel resolutions.
Key features
Bidirectional Calculation Modes
Convert pixels to physical print dimensions (inches and cm), or calculate required pixel dimensions from target print sizes.
Standard & Custom DPI Settings
Calculate for 300 DPI (photo print quality), 150 DPI (posters), 72/96 DPI (screens), or custom printer resolutions.
Dual Metric and Imperial Outputs
Displays physical print dimensions in both inches and centimeters simultaneously.
Instant Real-Time Math
Updates calculation results immediately as inputs change, with clean mathematical rounding.
Examples & use cases
Digital Camera Photo to 300 DPI Print Size
Calculate physical print dimensions of a 24-megapixel photo at standard lab quality.
Width: 6000 px, Height: 4000 px, DPI: 300
Print Size: 20.00 × 13.33 inches (50.80 × 33.86 cm)
A4 Photo Print Required Pixel Dimensions
Find required pixel resolution to print on standard A4 paper at 300 DPI.
Width: 8.27 inches, Height: 11.69 inches, DPI: 300
Required Resolution: 2481 × 3507 pixels
Web Graphic at 72 DPI vs 300 DPI Print
Compare physical print size of Full HD resolution at screen density vs photo print density.
Width: 1920 px, Height: 1080 px, at 72 DPI vs 300 DPI
At 72 DPI: 26.67 × 15.00 in; At 300 DPI: 6.40 × 3.60 in
Frequently asked questions
Helpful guides & tutorials
Related tools
Resize and crop photos to official passport and visa sizes at 300 DPI.
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View the RGB and luminance histogram of an image.