A0 vs. A10
Comparing 2 standards across 9 specifications. 9 key differences identified.
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.
A10 is the smallest standardized paper size defined under ISO 216, measuring 26 × 37 mm (1.02 × 1.46 inches) with a surface area of 1/1024 square meter. It is standard for admission raffle ticket stubs, micro coupons, small security inspection stamps, and dental sample labels.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
841 × 1189 mm | 26 × 37 mm |
|
Width × Height (Imperial)
|
33.1 × 46.8 in | 1.02 × 1.46 in |
|
Nominal Surface Area
|
1.000 m² (1,000,000 mm²) | 0.0009765625 m² (1/1024 m² — 962 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 | 0.078 grams |
|
Halving Relationship
|
Cut in half across length yields 2 sheets of A1 | — |
|
Primary Applications
|
Architectural blueprints, GIS cartography, technical CAD schematics, academic research posters | — |
|
A4 Imposition Yield
|
— | 64 individual A10 pieces per single A4 master sheet |
|
Status in ISO 216
|
— | The absolute smallest formal size defined in the standard |