Side-by-Side Comparison
A-Series (ISO 216)
A4 vs. A7
Comparing 2 standards across 9 specifications. 8 key differences identified.
Comparing:
A4
A7
A4 is the international standard paper format defined by ISO 216, measuring 210 × 297 mm (8.27 × 11.69 inches). Utilized by over 140 countries representing approximately 95% of the world's population, it is the universal standard for business letters, official contracts, academic papers, magazine publishing, and desktop office printers.
A7 is an ISO 216 standard paper size measuring 74 × 105 mm (2.91 × 4.13 inches), with a surface area of 1/128 square meter. Created by cutting an A6 sheet in half, it is widely utilized for pocket memo pads, medical prescription slips, event tickets, and promotional product tags.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
210 × 297 mm | 74 × 105 mm |
|
Width × Height (Imperial)
|
8.27 × 11.69 in | 2.91 × 4.13 in |
|
Nominal Surface Area
|
0.0625 m² (1/16 m² — 62,500 mm²) | 0.0078125 m² (1/128 m² — 7,770 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
5.0 grams exactly | 0.625 grams |
|
Weight of 500-Sheet Ream (80 gsm)
|
2.50 kg (5.51 lbs) | — |
|
Postal Envelope Pairings
|
C4 (unfolded), C5 (folded once), C6 (folded twice), DL (folded in thirds) | — |
|
Halving Relationship
|
— | Cut in half yields 2 sheets of A8 |
|
Primary Applications
|
— | Pocket sticky note pads, pharmacy prescription slips, event passes, luggage tags |