Key takeaway: A5 flyers measure 148 × 210 mm and A6 flyers 105 × 148 mm — A6 is exactly half the area of A5 and one quarter of A4 (ISO 216 standard). Pick A6 for hand-to-hand street distribution, A5 for menus, direct mail and trade shows; A5 tri-folded becomes DL size (99 × 210 mm), mailable without an envelope. ZprintPro A5 flyers start at 100 pieces from US$0.25/pc (site product page 2026 pricing), standard 3-5 business days, 30-second AI instant quote.
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Dimensions: A5 = 148 × 210 mm (5.83 × 8.27 in), A6 = 105 × 148 mm (4.13 × 5.83 in). Two A6 sheets make one A5; two A5 sheets make one A4 (ISO 216).
Pricing: A6 uses half the paper of A5 and typically runs 20-30% cheaper per piece (site 2026 quote basis); A5 flyers start at US$0.25/pc at 100 pieces, A4 flyers from US$0.35/pc (site product page 2026 pricing).
Direct mail: A5 tri-folded = DL size (99 × 210 mm), mailable without an envelope; the ANA/DMA 2025 report puts direct mail response at 4.4% — 37× email's 0.12%.
What Are the Exact A5 and A6 Dimensions?
A5 and A6 belong to the ISO 216 international paper standard. The A-series starts at A0 with exactly 1 square meter; each fold halves the area and adds one to the number. A4 folded once is A5, folded twice is A6. Every size keeps the same 1:√2 aspect ratio (about 1:1.414), so proportions survive folding — that is why one design file can scale cleanly from A5 down to A6.
| Size | mm | inches | Area | Pixels at 300 dpi |
|---|---|---|---|---|
| A4 | 210 × 297 | 8.27 × 11.69 | 623.7 cm² | 2480 × 3508 px |
| A5 | 148 × 210 | 5.83 × 8.27 | 310.8 cm² | 1748 × 2480 px |
| A6 | 105 × 148 | 4.13 × 5.83 | 155.4 cm² | 1240 × 1748 px |
| A5 tri-fold (DL) | 99 × 210 | 3.90 × 8.27 | folded piece | lay out on A5 |
Area figures are converted from ISO 216 standard dimensions (papersizes.org); pixel counts follow the 300 dpi print standard. For larger A-series sizes, see the poster size guide; for A4 flyer specs and pricing, see the A4 flyers product page.
【A6 = 105 × 148 mm — exactly half of A5, one quarter of A4; the A-series ratio is 1:√2, so folding never changes proportions】
Is A6 Half of A5?
Yes. Fold one A5 sheet along its long edge (the 210 mm side) and you get two 105 × 148 mm A6 sheets — the area halves from 310.8 cm² to 155.4 cm² (ISO 216 conversion). Read it backwards: two A6 sheets equal one A5, and four A6 sheets equal one A4. Memory rule: one size number up, half the area.
This half-relationship is practical: an A5 design scaled to 50% becomes the A6 version with no re-layout. One caution — body text shrinks by half too, so keep type at 7 pt or larger on A6 or it gets hard to read in print.
How Big Is A6 Compared to a Postcard?
A6 (105 × 148 mm) is close to a standard postcard: the US 4 × 6 in postcard measures 101.6 × 152.4 mm (USPS specification), slightly wider and longer than A6. A5 is roughly half a sheet of US Letter (8.5 × 11 in) — the classic size for countertop menus and price lists. A5 also fits half-letter rack slots, while A6 matches common postcard displays.
Artwork pixels at the 300 dpi print standard: A6 = 1240 × 1748 px, A5 = 1748 × 2480 px. Below 300 dpi, print will pixelate — check resolution before ordering; full file requirements are in the design file specs guide.
Which Size Fits Which Use Case?
The core trade-off is information density × distribution method — more information or sit-down reading calls for A5; mass handouts, mailbox drops and package inserts call for A6:
- Restaurant / takeout menus: A5 leads — room for menu highlights, promo code, address and phone; thicker stock survives delivery bags, see the thick-paper takeout flyer guide and the restaurant opening flyer guide
- Street handouts: A6 is lighter and smaller — 100 sheets in one hand, cheaper per piece, denser coverage
- Direct mail / mailbox drops: A5 tri-folded to DL slips into mailboxes without an envelope — details in section 6
- Trade shows / seminars: A5 on tables carries full details; A6 works as a follow-up card
- Retail counters / shelf tags: A6 fits tight display spots with a hanger or stand; agents canvassing neighborhoods should see the real estate flyer printing guide
Print response is backed by third-party data: the ANA/DMA 2025 report records a 4.4% direct mail response rate — 37× email (0.12%); house-list direct mail ROI reaches 161% versus 44% for email and 21% for social. USPS figures show 96% of direct mail is handled by recipients and stays in the home 17 days on average; Canada Post neuromarketing research found physical mail demands 21% less cognitive effort than digital ads and triggers 20% higher motivation response.
【For mass street handouts pick A6 — lighter, smaller, 20-30% cheaper; for information density, direct mail and tabletop display pick A5】
How Much Cheaper Is A6 than A5?
A6 uses half the paper of A5, so unit print cost typically runs 20-30% lower (site 2026 quote basis); the gap narrows on larger runs as press setup costs amortize. ZprintPro 2026 product-page pricing: A5 flyers from US$0.25/pc at 100 pieces, A4 flyers from US$0.35/pc, and folded leaflets from US$0.70/pc (157 gsm coated, double-sided full color).
| Dimension | A5 flyer | A6 flyer |
|---|---|---|
| Paper used | 310.8 cm² (1/2 of A4) | 155.4 cm² (1/4 of A4) |
| Unit price trend | Baseline (from US$0.25/pc at 100 pcs) | Typically 20-30% lower |
| Layout capacity | Menu + promo code + address | Single offer + QR code |
| Typical scenarios | Menus, direct mail, trade shows | Street handouts, counters, package inserts |
| Suggested runs | 100-5,000 pieces | 500-10,000 piece mass drops |
For a broader cost picture, see the printing cost baseline 2026. Market context: Grand View Research sizes the global commercial printing market at US$510.33 billion in 2025, growing to US$675.08 billion by 2033 at a 3.8% CAGR, with Asia-Pacific the largest region — short-run flyer demand keeps growing, and 100-piece digital minimums are now the industry norm.
【A5 flyers from US$0.25/pc at 100 pieces (site product page 2026 pricing); A6 typically runs 20-30% cheaper, with the gap narrowing on big runs】
Why Tri-Fold A5 to DL for Direct Mail?
A5 tri-folded becomes 99 × 210 mm — the DL size. The matching DL envelope measures 110 × 220 mm (ISO 269 standard) and was designed precisely for tri-folded A4/A5 sheets. DL fits standard mail slots and US #10 envelopes, so the piece mails without an envelope — saving envelope stock and inserting labor — or drops neatly into one for a more formal look. For 4-page double-sided content, half-fold A5 or pick a folded leaflet format instead.
Direct mail ROI is measurable: Lob's 2025 State of Direct Mail reports 84% of marketers rank direct mail as their highest-ROI channel; USPS finds personalized direct mail lifts response rates by 135%. A tri-folded A5 gives you six panels — enough for brand story, product highlights, a promo code and a reply form — which is why it is the most-used direct mail format.
【A5 tri-fold = DL size (99 × 210 mm), mailable without an envelope; DL envelopes measure 110 × 220 mm (ISO 269)】
Which Paper and Finishing Should You Pick?
| Paper | Characteristics | Best for |
|---|---|---|
| 100-120 gsm offset | Lightweight, writable | Mass street handouts, reply forms |
| 128 gsm coated | Vivid color, best value | Takeout flyers, retail distribution (the standard flyer stock) |
| 157-200 gsm coated | Sturdy, resists curling | Trade shows, direct mail, tabletop display |
| 250 gsm matte silk | Non-glare matte, premium feel | Brand cards, keepsake cards |
Match finishing to the distribution scenario: matte/gloss lamination for water and smudge resistance, rounded corners, or drill holes for hanging. See the double-sided flyers product page for duplex printing and the thick-paper flyers product page for heavier stocks.
【128 gsm coated is the standard flyer stock — vivid color at the best balance of cost; use 100-120 gsm offset for mass street distribution】
How to Prepare Print-Ready Files?
File requirements: PDF/X-1a format, 300 dpi resolution, CMYK color, 3 mm bleed on all four sides, fonts outlined. A5 artwork = 1748 × 2480 px, A6 = 1240 × 1748 px at 300 dpi. RGB screens and CMYK print differ — run a digital proof before large runs to confirm color. Full specs are in the design file specs guide and the CMYK color guide; no artwork yet? Use the free design service.
How to Order, and What's the Turnaround?
- Submit print-ready artwork (PDF/X-1a with 3 mm bleed) or use the free design service
- Pick A5 or A6, paper, folding and quantity — the 30-second AI instant quote prices it immediately
- Approve a digital proof for color (RGB screen vs CMYK print)
- Production: standard 3-5 business days; A5 flyers offer a 48-hour express option (site product page 2026 pricing), and rush jobs can use same-day flyers — see the rush printing guide
- SF Express local delivery; DHL Express 2-4 days worldwide
【100-piece minimum, standard 3-5 business days, 48-hour express on A5; the 30-second AI quote means no waiting】
A5 vs A6 FAQ
Q：Which is bigger — A5 or A6? What are the exact dimensions?
A：A5 (148 × 210 mm) is twice the area of A6 (105 × 148 mm). A5 is roughly half a sheet of A4; A6 is close to postcard size (ISO 216 standard).
Q：Is A6 half of A5?
A：Yes. Folding A5 along its long edge yields two A6 sheets — area halves from 310.8 cm² to 155.4 cm²; two A6 sheets make one A5.
Q：Should I hand out A5 or A6 flyers on the street?
A：For hand-to-hand distribution pick A6 — lighter, smaller and 20-30% cheaper per piece, so you distribute more. A5 suits countertop display, menus and direct mail with twice the information room.
Q：Can A5 flyers be mailed without an envelope?
A：Yes. A5 tri-folded becomes DL size (99 × 210 mm), which fits standard mail slots — no envelope needed, lower postage. For 4-page content, half-fold A5 or use a folded leaflet.
Q：Which is cheaper, A5 or A6 — and by how much?
A：A6 uses half the paper, so unit cost is typically 20-30% lower (site 2026 quote basis); A5 flyers start at US$0.25/pc at 100 pieces (site product page 2026 pricing), with the gap narrowing on larger runs.
Q：How many pixels should A5/A6 artwork be?
A：At the 300 dpi print standard: A5 = 1748 × 2480 px, A6 = 1240 × 1748 px, plus 3 mm bleed on all four sides; supply PDF/X-1a in CMYK with fonts outlined.
Q：What are the minimum order and turnaround for flyers?
A：ZprintPro starts at 100 pieces with standard 3-5 business day turnaround; A5 flyers carry a 48-hour express option, and same-day printing is available for rush jobs (site product page 2026 pricing).
Q：What's the difference between a US 4 × 6 in postcard and A6?
A：4 × 6 in = 101.6 × 152.4 mm (USPS specification), slightly wider and longer than A6 (105 × 148 mm); both work for mailed cards — A6 is the ISO international standard, 4 × 6 in the US convention.
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About the author: ZprintPro Print Engineering Team — 15 years of experience in commercial offset and digital printing, FSC-certified paper sourcing, ISO 12647-2 compliant color management. A5/A6 flyers from 100 pieces, covering restaurants, retail, real estate and trade shows, with free design and digital proofing. Last updated: 2026-09-19.
Sources: ISO 216 paper size standard; ISO 269 envelope size standard; papersizes.org size conversions; ANA/DMA 2025 Response Rate Report; Lob 2025 State of Direct Mail; USPS direct mail statistics; Canada Post neuromarketing research; Grand View Research commercial printing market report 2025; ZprintPro product page 2026 pricing.
