# item.guide
Side-by-Side Comparison A-Series (ISO 216)

A10 vs. A2

Comparing 2 standards across 9 specifications. 8 key differences identified.

Comparing:
A10 A10
A2 A2

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.

View full A10 spec sheet →

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.

View full A2 spec sheet →

Specification Comparison Table

9 Parameters
Parameter / Spec
A10 A10
A2 A2
Width × Height (Metric)
26 × 37 mm 420 × 594 mm
Width × Height (Imperial)
1.02 × 1.46 in 16.5 × 23.4 in
Nominal Surface Area
0.0009765625 m² (1/1024 m² — 962 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
0.078 grams 20.0 grams
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 —
Halving Relationship
— Cut in half yields 2 sheets of A3
Primary Applications
— Artistic photographic prints, desk calendars, sales territory charts, school classroom diagrams