A3, A4, A5, A6 or A7: Choosing the Right Flyer Size for Your Message

Flyer size isn't just a cost decision — A3 works as a small poster, A4 balances visibility with practicality, A5 is the most commonly ordered all-round size, and A6 or A7 suit compact, high-volume handouts where portability matters more than visual impact. Here's how to match size to how your flyer will actually be used.

A3: poster-scale visibility

A3 is large enough to work as a small poster — visible from across a room, suitable for a shop window, a noticeboard, or a display stand where visibility from a distance matters more than something a person will pocket and carry away. It's less practical for volume handouts (bulkier to carry and post through doors), so it suits display and in-store use better than street distribution. See our A3 flyers.

A4: the familiar, versatile default

A4 is instantly familiar — the same size as a standard sheet of paper — which makes it a practical, versatile choice for noticeboards, in-store displays, or handouts where a bit more visual presence than A5 is useful without moving into poster territory. It's a common choice for information-dense flyers, since the larger surface comfortably fits more text or a fuller layout than smaller formats. See our A4 flyers.

A5: the most commonly ordered size

A5 hits a genuinely useful middle ground — large enough to carry a clear message and decent visual impact, small enough to hand out easily, post through a letterbox without folding, and fit into a bag or pocket without being unwieldy. This balance is exactly why A5 is the most frequently ordered flyer size across most industries, and it's a sensible default if you're not sure which size fits your specific campaign. See our A5 flyers.

A6: compact and efficient

A6, roughly postcard-sized, suits situations where volume and portability matter more than visual scale — event handouts, discount vouchers, or anything meant to be picked up, pocketed and kept without taking up much space. The smaller surface limits how much you can comfortably include, so A6 works best for a short, focused message rather than anything text-heavy. See our A6 flyers.

A7: the smallest practical option

A7 is compact enough to feel almost like a large business card, suited to very short messages, a single offer code, or a small insert included with another item (a product, an order, a larger printed piece). It's the least visible option at a distance, so it works best where it'll be handed directly to someone rather than relying on visual impact to draw attention from across a room. See our A7 flyers.

Square flyers: breaking from the standard format

Worth a mention alongside the standard A-series: square flyers break from traditional proportions entirely, which can help a flyer stand out simply by not looking like every other rectangular handout in a stack — similar reasoning to square business cards, covered in our guide to business card sizes.

Matching size to distribution method

• Door drops and letterbox posting — A5 or A6 post through most letterboxes cleanly without folding; A4 and A3 are more likely to need folding, which changes the format entirely.

• Street handouts — A5 or A6 balance visibility with something a passer-by can quickly pocket without it feeling unwieldy.

• In-store or noticeboard display — A4 or A3 give you the visual presence needed to be noticed from a few metres away.

• Inserts with orders or other printed pieces — A6 or A7 keep a supplementary message compact and unobtrusive alongside the main item.

Cost considerations across sizes

Larger flyers cost more per unit than smaller ones, reflecting the additional paper and ink coverage, though the difference is often smaller than people expect relative to the total order cost, particularly at higher print quantities. Rather than choosing purely on price, it's usually more effective to choose the size that fits your actual use case, then look at quantity as the main lever for managing overall budget.

Content and size need to match

A common mistake is designing content for one size, then discovering it feels cramped or sparse once scaled to a different format. A dense, information-heavy layout designed for A4 will feel overcrowded shrunk to A6; a simple, punchy A6-style message will feel sparse and underwhelming stretched across an A3 sheet. Decide your size early, ideally before finalising the amount of content you're trying to fit, rather than designing first and hoping it scales cleanly afterwards.

How the A-series sizes relate to each other

It's worth understanding the underlying logic of the A-series, since it makes size decisions more intuitive once you see the pattern: each size is exactly half the area of the one before it, so two A6 flyers fit within the space of one A5, and two A5s fit within one A4, and so on up to A3. This isn't just trivia — it's genuinely useful when planning print layouts or thinking about how much content realistically fits as you move down a size, since halving the area roughly halves the amount of comfortable content space, not just the physical dimensions in a way that might feel proportionally smaller than it actually is.

Testing a size before a full print run

If you're genuinely unsure which size suits your campaign, it costs very little to print a small proof run at two candidate sizes and physically compare them in the actual context you'll use them — held at a shop counter, tested through a real letterbox, laid out on a noticeboard. Sizes that look similar side by side on a screen can feel meaningfully different once handled physically, and this small step avoids discovering after a large print run that your chosen size doesn't suit the space or distribution method as well as expected.

A simple way to decide

If you need visual presence from a distance — a shop window, a noticeboard — go A3 or A4. For general-purpose handouts balancing message and portability, A5 is the reliable, most commonly used default. For high-volume, short-message distribution or something meant to be pocketed and kept, A6 or A7 are the practical choice. If you're still torn between two sizes, a small proof run at each is a cheap way to settle the decision with the real object in hand rather than guessing from a screen. Browse the full flyers range to compare sizes directly, or visit the Gloss Label homepage for everything else we print.