Side-by-Side Comparison
A-Series (ISO 216)
A1 vs. A2
Comparing 2 standards across 7 specifications. 6 key differences identified.
Comparing:
A1
A2
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.
A2 is an ISO 216 standard paper size measuring 420 × 594 mm (16.5 × 23.4 inches), with a surface area of 0.250 square meters (one quarter of A0). Providing a balanced medium-large format, it is standard for fine-art photographic prints, architectural site overviews, large wall calendars, and retail window display posters.
Specification Comparison Table
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
594 × 841 mm | 420 × 594 mm |
|
Width × Height (Imperial)
|
23.4 × 33.1 in | 16.5 × 23.4 in |
|
Nominal Surface Area
|
0.500 m² (500,000 mm²) | 0.250 m² (250,000 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
40.0 grams | 20.0 grams |
|
Halving Relationship
|
Cut in half yields 2 sheets of A2 | Cut in half yields 2 sheets of A3 |
|
Primary Applications
|
Architectural blueprints, conference presentation boards, large flipcharts, theatrical event posters | Artistic photographic prints, desk calendars, sales territory charts, school classroom diagrams |