Best Leaflet Sizes for Marketing Campaigns

When planning a marketing campaign, one of the first questions you’ll face is: what size should my leaflet be?

The right size can make all the difference — it affects not only how much information you can include, but also how your audience engages with it. Too small, and your message might get lost. Too large, and you risk higher print costs or leaflets that are awkward to handle.

Here’s a breakdown of the most popular leaflet sizes and the best times to use them.

A6 Leaflets (105mm x 148mm)

• Compact and cost-effective
• Great for: handing out at events, vouchers, discount codes, loyalty promotions
• Fits easily into wallets, purses, and pockets
• Best when your message is short and punchy

? Think of A6 as the “business-card-plus” size — small, memorable, and perfect for quick impact.

A5 Leaflets (148mm x 210mm)

• The most popular flyer size
• Big enough for bold graphics, special offers, and menus
• Ideal balance of portability and space for information
• Cost-efficient for both small and bulk runs

? This is the go-to choice for takeaways, gyms, estate agents, and retail promotions. If in doubt, choose A5.

A4 Leaflets (210mm x 297mm)

• High impact with maximum space
• Great for detailed product guides, price lists, or event programmes
• Doubles as a poster — fold it and use as a handout, or pin it on walls
• More expensive than smaller formats, but makes a statement

? Perfect when your audience needs detail — or when you want your leaflet to double as something they’ll keep.

DL Leaflets (99mm x 210mm)

• Tall and slim, stylish design
• Fits perfectly in envelopes and brochure holders
• Great for menus, price lists, and event schedules
• Offers a professional look without being bulky

? DL is the choice for businesses that want to look sleek and modern, while keeping information structured and easy to read.

? Folded Leaflets

Sometimes one sheet isn’t enough — that’s where folded leaflets come in.

• Bifold (A4 folded to A5) – Perfect for menus, service brochures, and programmes
• Trifold (A4 folded into three DL panels) – Great for step-by-step guides, travel info, or product catalogues

? Folded leaflets give you more space without going up a size — ideal when you want to tell a story.

Choosing the Right Size for Your Campaign

• For quick promotions: A6 or DL
• For everyday marketing: A5 (best all-rounder)
• For detail-heavy campaigns: A4 or folded formats
• For sleek presentation: DL

The best leaflet size depends on your audience, budget, and how much information you need to share.

✨ Final Thoughts

Leaflets are one of the most versatile marketing tools out there. By choosing the right size, you’ll maximise both impact and return on investment.

At Leafletfrog, we print all the popular sizes — from handy A6 to eye-catching A4, plus folded formats for when you need that little extra space.

Ready to bring your campaign to life? Browse our leaflet printing options and find the perfect size for your next promotion.