DPI / PPI Calculator
Calculate PPI from pixels and physical size, or required pixels from target print size.
DPI / PPI result
2480px across 210mm equals 300 PPI. At 300 PPI, 210mm needs 2480px.
- Quality at effective PPI: Acceptable
- Formula: PPI = pixels / inches. Rewriting the DPI tag alone does not add real pixels.
| PPI | Required pixels for 210mm |
|---|---|
| 72 | 595px |
| 96 | 794px |
| 150 | 1240px |
| 200 | 1654px |
| 300 | 2480px |
| 600 | 4961px |
FAQ
Does changing DPI improve quality?
No. It changes print interpretation unless you also add real pixels through resampling.
Are DPI and PPI identical?
For this planning tool, PPI is effective pixel density for print sizing.
Related tools
Sources and limits
Print formulas use standard inch, cm, mm and PPI conversions. Last checked 2026-05-24.
Platform dimensions are centralized in data files. Every platform spec must include sourceConfidence, sourceUrl and lastCheckedAt. Official platform documentation overrides this tool when specifications differ.