Side-by-Side Comparison
A-Series (ISO 216)
A0 vs. A7
Comparing 2 standards across 7 specifications. 7 key differences identified.
Comparing:
A0
A7
A0 is the base unit of the ISO 216 international paper standard, defined with an exact surface area of 1 square meter (1.000 m²) and dimensions of 841 × 1189 mm (33.1 × 46.8 inches). Operating on the 1:√2 Lichtenberg aspect ratio, it is the global standard for large architectural CAD plots, engineering schematics, and academic conference poster presentations.
A7 is an ISO 216 standard paper size measuring 74 × 105 mm (2.91 × 4.13 inches), with a surface area of 1/128 square meter. Created by cutting an A6 sheet in half, it is widely utilized for pocket memo pads, medical prescription slips, event tickets, and promotional product tags.
Specification Comparison Table
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
841 × 1189 mm | 74 × 105 mm |
|
Width × Height (Imperial)
|
33.1 × 46.8 in | 2.91 × 4.13 in |
|
Nominal Surface Area
|
1.000 m² (1,000,000 mm²) | 0.0078125 m² (1/128 m² — 7,770 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142 — Lichtenberg ratio) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
80.0 grams exactly | 0.625 grams |
|
Halving Relationship
|
Cut in half across length yields 2 sheets of A1 | Cut in half yields 2 sheets of A8 |
|
Primary Applications
|
Architectural blueprints, GIS cartography, technical CAD schematics, academic research posters | Pocket sticky note pads, pharmacy prescription slips, event passes, luggage tags |