DPI / Print Size Calculator Free
Convert pixels to inches or cm at any DPI, find the biggest size you can print an image at 300 or 150 DPI, and check common POD print sizes for posters, mugs, shirts and totes.
| DPI | Max print size | Quality |
|---|
| Product | Print size | Pixels needed |
|---|---|---|
| Poster — 18 × 24 in | 18 × 24 in | 5400 × 7200 px |
| Poster — 24 × 36 in | 24 × 36 in | 7200 × 10800 px |
| Framed print — 11 × 14 in | 11 × 14 in | 3300 × 4200 px |
| Mug wrap — 11 oz | 8.2 × 3.79 in | 2460 × 1137 px |
| Mug wrap — 15 oz | 8.66 × 4.92 in | 2598 × 1476 px |
| T-shirt front print | 12 × 16 in | 3600 × 4800 px |
| Tote bag | 14 × 14 in | 4200 × 4200 px |
| Throw pillow | 18 × 18 in | 5400 × 5400 px |
How to use the DPI calculator
DPI (dots per inch) controls how sharp an image prints at a given size — the same pixel grid stretched over a bigger area gets softer. Pick a direction: give pixels and a DPI to see the print size, or give a target print size and a DPI to see the pixels you need. Switch between inches and centimetres, or drop an image below to read its pixel size automatically and see the biggest size it can print at 300 and 150 DPI.
- Pixels → Size: enter width, height and DPI to get the print size
- Size → Pixels: enter a target print size and DPI to get the pixels you need
- Drop an image to read its pixel dimensions without uploading it anywhere
- Common print-on-demand sizes for posters, mugs, shirts and totes, ready to reference
Made for Etsy and Shopify sellers
Print-on-demand partners reject or silently downgrade files that don't clear their DPI requirement, and a design that looks crisp on screen can still print soft. Check your pixel dimensions against the size you're selling before you upload — then use the poster print resizer to actually fit your file to that size.