Side-by-Side Comparison
A-Series (ISO 216)
A6 vs. A8
Comparing 2 standards across 8 specifications. 7 key differences identified.
Comparing:
A6
A8
A6 is an ISO 216 standard paper size measuring 105 × 148 mm (4.13 × 5.83 inches), with a surface area of 1/64 square meter. Created by folding an A4 sheet into quarters, it is the worldwide postal standard for international picture postcards, pocket diaries, and point-of-sale receipt slips.
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.
Specification Comparison Table
8 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
105 × 148 mm | 52 × 74 mm |
|
Width × Height (Imperial)
|
4.13 × 5.83 in | 2.05 × 2.91 in |
|
Nominal Surface Area
|
0.015625 m² (1/64 m² — 15,625 mm²) | 0.00390625 m² (1/256 m² — 3,848 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
1.25 grams | 0.3125 grams |
|
Primary Applications
|
International postcards, pocket notebooks (Field Notes style), thermal photo prints, lab sample tags | European calling cards, retail product price swing tags, barcode labels, flash cards |
|
Matching Postal Envelope
|
C6 Envelope (114 × 162 mm) | — |
|
Comparison to ISO 7810 ID-1
|
— | Slightly smaller than credit card size (85.60 × 53.98 mm) |