Side-by-Side Comparison
A-Series (ISO 216)
A10 vs. A4
Comparing 2 standards across 9 specifications. 8 key differences identified.
Comparing:
A10
A4
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.
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.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
26 × 37 mm | 210 × 297 mm |
|
Width × Height (Imperial)
|
1.02 × 1.46 in | 8.27 × 11.69 in |
|
Nominal Surface Area
|
0.0009765625 m² (1/1024 m² — 962 mm²) | 0.0625 m² (1/16 m² — 62,500 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
0.078 grams | 5.0 grams exactly |
|
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 | — |
|
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) |