Flyer sizes in Australia follow the international A series, plus two long formats built around the standard envelope. Picking between them is mostly a question of how much the reader has agreed to look at, and where the flyer has to physically fit.
The six sizes, in millimetres
- A3 — 297 × 420mm. Poster territory. Read from across a room rather than held.
- A4 — 210 × 297mm. Standard page size. The default for anything with real detail — price lists, menus, spec sheets.
- A5 — 148 × 210mm. Half an A4. The most common handout size in Australia.
- A6 — 105 × 148mm. Postcard sized. Cheap per unit, easy to hand out in volume.
- DL — 99 × 210mm. One third of an A4, sized to slip into a standard DL envelope unfolded.
- DDL — 210 × 198mm. A wider, squarer format that stands out in a stack of A-series pieces.
How to actually choose
Start with where it will be read
A flyer on a counter competes with everything else on that counter, so it needs to work at a glance — A6 and DL do this well because the whole thing is one message. A flyer someone takes home and reads sitting down can carry more, which is where A5 and A4 earn their space.
Then check it fits the delivery method
If the flyer is going in an envelope or a letterbox drop, the size has to suit that. DL exists precisely because it fits a standard DL envelope without folding, which matters if you are mailing rather than handing out. A4 posted flat needs a C4 envelope; folded to DL it fits a standard one.
Then look at cost per piece, not cost per job
Smaller sizes fit more copies on a press sheet, so the per-flyer cost drops steeply as the size comes down. If the message genuinely fits on an A6, printing it as an A5 is paying for paper that is doing nothing. We explain what else moves the number in what actually makes printing expensive.
A note on folding
Only A4 flyers carry fold and score-and-fold finishing. Folding an A4 down to DL gives you three panels of the same size as a DL flyer, with six sides to work with instead of two. If you want that, see flyer fold types explained.
Specs that apply across all six sizes
- Full colour, printed one side or both.
- Gloss, silk and uncoated stocks on every size; A5, A3, A6, DL and DDL also offer Knight and Eco Uncoated.
- Minimum order 25 flyers.
- Standard turnaround 3–5 business days from proof approval.
Set your artwork up at the trim size above plus 3mm bleed on every edge, and keep text at least 4mm inside the trim. Our file requirements cover the rest.