Physical sizing
Everything in the plugin rests on one fact: in Figma, 1 pixel equals 1 point equals 1/72 of an inch, and Figma's PDF export preserves that mapping. Get this right and your files come out at exactly the physical size you intended.
The math
| Unit | In Figma pixels |
|---|---|
| 1 inch | 72 px |
| 1 mm | 2.8346 px |
| 1 cm | 28.346 px |
So an A4 (210 x 297 mm) is 595.3 x 841.9 px, and with 3 mm bleed on each side the frame is 612.3 x 858.9 px. The Setup tab does all of this for you.
Common sizes at a glance
| Size | mm | Figma px |
|---|---|---|
| A4 | 210 x 297 | 595 x 842 |
| A5 | 148 x 210 | 420 x 595 |
| US Letter | 215.9 x 279.4 | 612 x 792 |
| Business card (EU) | 85 x 55 | 241 x 156 |
| DL flyer | 99 x 210 | 281 x 595 |
| Poster 18 x 24 in | 457.2 x 609.6 | 1296 x 1728 |
Where DPI fits in
The frame defines the physical size; DPI only matters for raster content. A photo needs enough pixels for the area it covers (effective PPI), and PDF export rasterizes pages at your chosen maximum DPI. Text and vectors in Figma have no resolution until export, which is why designing at "300 DPI pixel dimensions" is a mistake the rescale tool exists to fix.