A1 vs. A8
Comparing 2 standards across 8 specifications. 7 key differences identified.
A1 is an ISO 216 standard paper size measuring 594 × 841 mm (23.4 × 33.1 inches), with an exact surface area of 0.500 square meters (half of A0). It is the premier standard format for architectural blueprints, structural engineering drawings, municipal planning maps, and large-format flipcharts.
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)
|
594 × 841 mm | 52 × 74 mm |
|
Width × Height (Imperial)
|
23.4 × 33.1 in | 2.05 × 2.91 in |
|
Nominal Surface Area
|
0.500 m² (500,000 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
|
40.0 grams | 0.3125 grams |
|
Primary Applications
|
Architectural blueprints, conference presentation boards, large flipcharts, theatrical event posters | European calling cards, retail product price swing tags, barcode labels, flash cards |
|
Halving Relationship
|
Cut in half yields 2 sheets of A2 | — |
|
Comparison to ISO 7810 ID-1
|
— | Slightly smaller than credit card size (85.60 × 53.98 mm) |