# 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