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

A1 vs. A10

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

Comparing:
A1 A1
A10 A10

A1 is an ISO 216 standard paper size measuring 594 × 841 mm (23.4 × 33.1 inches), with an exact surface area of 0.500 square meters (half of A0). It is the premier standard format for architectural blueprints, structural engineering drawings, municipal planning maps, and large-format flipcharts.

View full A1 spec sheet →

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 →

Specification Comparison Table

9 Parameters
Parameter / Spec
A1 A1
A10 A10
Width × Height (Metric)
594 × 841 mm 26 × 37 mm
Width × Height (Imperial)
23.4 × 33.1 in 1.02 × 1.46 in
Nominal Surface Area
0.500 m² (500,000 mm²) 0.0009765625 m² (1/1024 m² — 962 mm²)
Exact Aspect Ratio
1 : √2 (1 : 1.4142) 1 : √2 (1 : 1.4142)
Weight of Standard 80 gsm Sheet
40.0 grams 0.078 grams
Halving Relationship
Cut in half yields 2 sheets of A2
Primary Applications
Architectural blueprints, conference presentation boards, large flipcharts, theatrical event posters
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