Side-by-Side Comparison
A-Series (ISO 216)
A8 vs. A9
Comparing 2 standards across 8 specifications. 7 key differences identified.
Comparing:
A8
A9
A8 is an ISO 216 standard paper size measuring 52 × 74 mm (2.05 × 2.91 inches), with a surface area of 1/256 square meter. Approximately matching the footprint of standard bank payment cards, it is standard for European business cards, loyalty stamps, retail price tags, and transit ticket stubs.
A9 is an ISO 216 standard paper size measuring 37 × 52 mm (1.46 × 2.05 inches), with a surface area of 1/512 square meter. Created by cutting an A8 sheet in half, it is standard for miniature barcode labels, commemorative postage stamps, bookkeeper index tabs, and food expiration stickers.
Specification Comparison Table
8 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
52 × 74 mm | 37 × 52 mm |
|
Width × Height (Imperial)
|
2.05 × 2.91 in | 1.46 × 2.05 in |
|
Nominal Surface Area
|
0.00390625 m² (1/256 m² — 3,848 mm²) | 0.001953125 m² (1/512 m² — 1,924 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
0.3125 grams | 0.156 grams |
|
Primary Applications
|
European calling cards, retail product price swing tags, barcode labels, flash cards | Postage stamps, small jar adhesive labels, index divider tabs, coupon tokens |
|
Comparison to ISO 7810 ID-1
|
Slightly smaller than credit card size (85.60 × 53.98 mm) | — |
|
A4 Imposition Yield
|
— | 32 individual A9 pieces per single A4 master sheet |