Super A3 paper size
329 × 483 mm
12.95 × 19.02 inches · 32.9 × 48.3 cm · aspect ratio 1:1.47
What Super A3 is for
Super A3, also sold as A3+ or 13 × 19 inches, is 329 × 483 mm — an A3 sheet with about 13 mm of extra margin on the short edge and 63 mm on the long one. It exists so a desktop inkjet can print a full-bleed A3 and trim it, since most such printers cannot print to the edge of a sheet. If you are ordering paper to produce borderless A3, this is the size to ask for.
Super A3 in every unit
| Unit | Width | Height |
|---|---|---|
| Millimetres | 329 mm | 483 mm |
| Centimetres | 32.9 cm | 48.3 cm |
| Inches | 12.95 in | 19.02 in |
| Points (PostScript) | 933 pt | 1369 pt |
Super A3 in pixels
Pixel dimensions depend entirely on the resolution you are working at — there is no single "pixel size" for a sheet of paper.
| Resolution | Pixels | Use |
|---|---|---|
| 72 DPI | 933 × 1369 | Screen preview only — far too coarse to print |
| 150 DPI | 1943 × 2852 | Draft printing, internal documents |
| 300 DPI | 3886 × 5705 | The standard for commercial print |
| 600 DPI | 7772 × 11409 | Fine detail, line art, archival scanning |
Setting up a print document? Use 300 DPI and add 3 mm of bleed on every edge unless your printer specifies otherwise.
How Super A3 relates to the rest of the series
About Super A3
329 × 483 mm, the oversized A3 that desktop inkjets use for bleed.
Why A sizes halve so neatly
The A series is built on a 1:√2 ratio — approximately 1:1.414. That proportion has a unique property: cut the sheet in half across its long side and the two halves keep exactly the same proportions. This is why two A4 sheets make an A3, why scaling A4 artwork to A3 needs no cropping, and why photocopiers have a single "A4 → A3" button that just works.
Other ISO A series sizes
| Size | Millimetres | Inches |
|---|---|---|
| A0 | 841 × 1189 mm | 33.11 × 46.81 in |
| A1 | 594 × 841 mm | 23.39 × 33.11 in |
| A2 | 420 × 594 mm | 16.54 × 23.39 in |
| A3 | 297 × 420 mm | 11.69 × 16.54 in |
| A4 | 210 × 297 mm | 8.27 × 11.69 in |
| A5 | 148 × 210 mm | 5.83 × 8.27 in |
| A6 | 105 × 148 mm | 4.13 × 5.83 in |
| A7 | 74 × 105 mm | 2.91 × 4.13 in |
| A8 | 52 × 74 mm | 2.05 × 2.91 in |
| A9 | 37 × 52 mm | 1.46 × 2.05 in |
| A10 | 26 × 37 mm | 1.02 × 1.46 in |
Frequently asked questions
What size is Super A3 in mm?
329 × 483 mm.
What size is Super A3 in inches?
12.95 × 19.02 inches.
What size is Super A3 in pixels?
There is no single answer — it depends on resolution. At the print standard of 300 DPI it is 3886 × 5705 pixels; at 72 DPI it is only 933 × 1369.