Side-by-Side Comparison
A-Series (ISO 216)
A0 vs. A6
Comparing 2 standards across 8 specifications. 8 key differences identified.
Comparing:
A0
A6
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.
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.
Specification Comparison Table
8 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
841 × 1189 mm | 105 × 148 mm |
|
Width × Height (Imperial)
|
33.1 × 46.8 in | 4.13 × 5.83 in |
|
Nominal Surface Area
|
1.000 m² (1,000,000 mm²) | 0.015625 m² (1/64 m² — 15,625 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 | 1.25 grams |
|
Primary Applications
|
Architectural blueprints, GIS cartography, technical CAD schematics, academic research posters | International postcards, pocket notebooks (Field Notes style), thermal photo prints, lab sample tags |
|
Halving Relationship
|
Cut in half across length yields 2 sheets of A1 | — |
|
Matching Postal Envelope
|
— | C6 Envelope (114 × 162 mm) |