Side-by-Side Comparison
A-Series (ISO 216)
A2 vs. A5
Comparing 2 standards across 7 specifications. 6 key differences identified.
Comparing:
A2
A5
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.
A5 is an ISO 216 standard paper size measuring 148 × 210 mm (5.83 × 8.27 inches), created by cutting or folding an A4 sheet in half. It is the dominant global format for commercial spiral notebooks, daily planners, paperback novels, corporate marketing flyers, and restaurant menus.
Specification Comparison Table
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
420 × 594 mm | 148 × 210 mm |
|
Width × Height (Imperial)
|
16.5 × 23.4 in | 5.83 × 8.27 in |
|
Nominal Surface Area
|
0.250 m² (250,000 mm²) | 0.03125 m² (1/32 m² — 31,250 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
20.0 grams | 2.5 grams |
|
Halving Relationship
|
Cut in half yields 2 sheets of A3 | Cut in half yields 2 sheets of A6 |
|
Primary Applications
|
Artistic photographic prints, desk calendars, sales territory charts, school classroom diagrams | Stationery notebooks (Moleskine, Rhodia), marketing flyers, paperback booklets, event programs |