Side-by-Side Comparison
A-Series (ISO 216)
A3 vs. A6
Comparing 2 standards across 8 specifications. 7 key differences identified.
Comparing:
A3
A6
A3 is an ISO 216 standard paper size measuring 297 × 420 mm (11.7 × 16.5 inches), with a surface area of 0.125 square meters (one eighth of A0). It is the standard large-format paper supported by commercial office multifunction printers (MFPs), widely used for financial spreadsheets, two-page A4 magazine spreads, and engineering diagrams.
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)
|
297 × 420 mm | 105 × 148 mm |
|
Width × Height (Imperial)
|
11.7 × 16.5 in | 4.13 × 5.83 in |
|
Nominal Surface Area
|
0.125 m² (125,000 mm²) | 0.015625 m² (1/64 m² — 15,625 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
10.0 grams | 1.25 grams |
|
Primary Applications
|
Office spreadsheets, folded A4 booklets, ledger accounting, small posters | International postcards, pocket notebooks (Field Notes style), thermal photo prints, lab sample tags |
|
Halving Relationship
|
Cut or folded in half yields 2 sheets / 4 pages of A4 | — |
|
Matching Postal Envelope
|
— | C6 Envelope (114 × 162 mm) |