Flyer Sizes Guide: 4x6 vs 5x7 vs 8.5x11 (Which to Use When)

You have an event, a sale or a new service to announce, and you know a flyer is the right tool. Then the order form asks for a size, and suddenly you are choosing between 4x6, 5x7, 5.5x8.5 and 8.5x11 with no idea which one fits your plan. Pick too small and your message gets cramped. Pick too big and you pay more for paper that ends up folded in a back pocket or rejected by the mail rate you were counting on.

This guide walks through the common flyer sizes, what each one is good at, and how to choose based on where the flyer will actually be seen: handed out, posted on a wall, left on a counter or sent through the mail.

Start with one question: where will people see it?

Size is not a style choice first. It is a distribution choice. Before you open a design file, decide which of these describes your flyer:

• Handed out at an event, store counter or job site, where people put it in a pocket or bag.
• Posted on a bulletin board, window or wall, where it competes with everything around it.
• Left behind in a takeaway stack, a folder or a lobby rack.
• Mailed, either addressed or through Every Door Direct Mail (EDDM), where postal rules decide what counts as a postcard or a flat.

Once you know the channel, the right size usually becomes obvious.

4x6: the pocket-friendly handout

A 4x6 flyer is really a postcard-sized piece. It is easy to hand out, easy to keep, and it fits in a wallet, a takeout bag or a car cup holder. That makes it great for:

• Restaurant promos and coupons tucked into delivery orders
• Event reminders handed out at the door
• Contractors leaving a quick "we were here" card after an estimate
• Realtors handing out open house details

The trade-off is space. Plan for one headline, one offer, one call to action and your contact details. If you need a menu, a price list or a map, 4x6 is too small.

It is also a good size for mail. According to the USPS postcard size guidelines, a mailpiece qualifies as a postcard when it is at least 3.5 x 5 inches and no more than 4.25 x 6 inches, between 0.007 and 0.016 inch thick. A 4x6 sits inside that range. Printed on a heavier card stock such as 14pt Postcards (14pt is roughly 0.014 inch; see our paper stock guide), it feels substantial in the hand.

5x7: more room, still easy to carry

A 5x7 gives you noticeably more space than a 4x6 without becoming a full sheet. It works well when you need a short list, a few photos or a two-sided layout with an offer on the front and details on the back. Good uses:

• Event invitations and save-the-dates
• Service menus for salons, spas and cleaning companies
• Grand opening announcements with hours, address and a map
• Leave-behinds for property showings with photos and key features

One thing to know: 5x7 is larger than the USPS postcard maximum of 4.25 x 6 inches, so it will not mail at postcard pricing. If postage cost matters, either use 4x6 for mail and save 5x7 for handouts, or confirm the rate with your mail provider before printing.

5.5x8.5: the half-letter workhorse

Half-letter (exactly half of an 8.5x11 sheet) is an underrated size. It holds about as much content as most people actually read, it stacks neatly on counters, and it fits inside standard presentation folders. Use it for:

• Counter flyers at a register or front desk
• Class schedules, event agendas and program inserts
• Price sheets for small product lines
• Community board postings where space is tight

If you are torn between 5x7 and 8.5x11, half-letter is often the right middle ground.

8.5x11: the classic full-page flyer

Letter size is what most people picture when they hear "flyer." It gives you the most room for headlines, photos, details and directions, and it reads well from a few feet away on a wall or window. Use it for:

• Bulletin boards, storefront windows and community centers
• Sales sheets and product spec sheets for B2B meetings
• Real estate feature sheets with multiple photos
• Restaurant specials and catering menus

An 8.5x11 is also the starting point for folded pieces. Fold it once and you have a half-fold brochure; fold it twice and you have a Tri Fold Brochure. If your content is outgrowing a single flat page, a fold is often better than a bigger sheet.

For EDDM, size matters too. The USPS EDDM-Retail flat standards require a piece to weigh no more than 3.3 ounces and be longer than 10.5 inches, taller than 6.125 inches, or thicker than 0.25 inch. A flat 8.5x11 meets the length rule, which is one reason larger flyers are popular for neighborhood saturation mailings. If you plan to go that route, look at EDDM Flyers - Print Only and confirm the final size against the USPS rules before you design.

11x17: when it needs to be seen across the room

Tabloid size (11x17) sits in the gap between a flyer and a poster. Use it for event announcements in high-traffic areas, café and gym walls, or anywhere people will view it from several feet away. Keep text short and large; at this size, a headline and a date matter more than paragraphs.

Quick comparison table

Design tips that work at any size

• Design at the final size from the start. Scaling a letter-size layout down to 4x6 almost always leaves text too small to read.
• Add bleed and keep a safe zone. Extend backgrounds past the trim line and keep text away from the edges. Our print-ready file checklist covers bleed, resolution and color mode.
• One message per flyer. A smaller size forces this discipline; keep it even on 8.5x11.
• Make the call to action obvious. A phone number, website or QR code should be easy to find at a glance.
• Use the back. Two-sided printing doubles your space without changing the size.
• Consider tear-off tabs for community boards. Tearoff Flyers let people take your number without taking the whole flyer.

Checklist before you order

• I know where the flyer will be seen (handed out, posted, left behind or mailed).
• The size matches that channel and holds my content without cramming.
• If mailing, I checked the size against USPS postcard or EDDM rules.
• My file is built at the final size with bleed and a safe zone.
• I picked a paper weight that fits how the flyer will be handled.
• The headline, offer and call to action are readable at arm's length.

Frequently asked questions

What is the most common flyer size?

8.5x11 (letter size) is the most familiar because it matches standard paper and works for walls, windows and sales sheets. For handouts, smaller sizes like 4x6 and 5.5x8.5 are often more practical because people can keep them.

Can I mail a flyer without an envelope?

Yes, as long as it meets USPS standards for the mail class you use. A 4x6 on card stock can mail as a postcard if it falls within the USPS size and thickness range. Larger flat pieces can go through EDDM if they meet the flat requirements linked above. Always confirm before printing.

Should I choose a bigger flyer to stand out?

Not necessarily. A bigger flyer stands out on a wall, but in a hand-to-hand setting a sturdy, well-designed 4x6 or 5x7 is more likely to be kept. Match the size to the channel, then make the design do the work.

Print your flyers with KEOPSY

At KEOPSY, you can choose your size, paper stock, finish and quantity in the live configurator on Flat Flyers Brochures, starting at $18.40 as listed on keopsy.com, and see your price instantly. Every file is reviewed by a real person before it prints, so problems like missing bleed or low-resolution images get caught before they cost you a reprint.

Don't have a design yet? Try the KEOPSY AI Design Studio to create a flyer at the right size, then send it straight to print.