How many pixels do you need for a 300 DPI print?
Calculate the pixels required for common physical print sizes.
Why this order matters
DPI describes how many dots are placed in one inch. Required pixels equal print length in inches multiplied by DPI; convert centimetres to inches by dividing by 2.54 first.
Check the destination first
If the receiving website or authority publishes its own format and size requirements, follow those instructions first. Keep the original and work on a copy.
Recommended workflow
- Choose the desired physical print width and height.
- Convert centimetres to inches and multiply each dimension by the target DPI.
- Confirm that the source has enough pixels before printing.
Checks before saving
- Changing only the DPI metadata does not create more image detail.
- Images viewed up close generally need more resolution.
- Printer, paper and sharpening settings also affect the final result.
Zoom in on the result and open it once in the environment where it will be used. Automated calculations and conversions are convenient reference tools, not a substitute for the receiving organisation’s final decision.
Open DPI and Print Size Calculator →