DPI & Print Size Calculator
The DPI Calculator computes the print size in inches, cm, and mm from pixel width/height and DPI — and works in reverse too, finding the required pixel size for a target print size and DPI. Pairs well with FREE PDF's image tools when preparing files for print.
How to use
- 1Choose the direction: Pixels → Print size or Print size → Pixels.
- 2Enter the relevant values (pixels/size and DPI).
- 3See the result in inches, cm, mm, or pixels.
Why FREE PDF?
- Completely free
- No account required
- Processing happens in your browser whenever possible
- Your files stay yours
Related Tools
Image Resize Calculator
Calculate the resulting pixel size when scaling an image by a percentage.
Paper Size Calculator
Look up standard paper sizes (A-series, Letter, Legal) in mm and their pixel size at a given DPI.
Percentage Calculator
Instantly calculate a percentage of a number, or what percent one number is of another.
Percentage Change Calculator
Calculate the percentage increase or decrease between two values.
Frequently Asked Questions
How do I find the print size from pixel dimensions?
Enter the pixel width/height and the DPI — the print size in inches, cm, and mm is calculated.
Can I calculate in reverse (find pixels from print size)?
Yes, enter your desired print size and DPI to find the minimum required pixel dimensions.
What DPI value is recommended for printing?
300 DPI is generally recommended for quality prints, while 72-96 DPI is considered sufficient for screen/web use.
How does this connect to FREE PDF's image tools?
Before resizing your image with FREE PDF's Resize Image tool, you can calculate the exact pixel value needed for the correct print size here.