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

A1 vs. A8

Comparing 2 standards across 8 specifications. 7 key differences identified.

Comparing:
A1 A1
A8 A8

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 →

A8 is an ISO 216 standard paper size measuring 52 × 74 mm (2.05 × 2.91 inches), with a surface area of 1/256 square meter. Approximately matching the footprint of standard bank payment cards, it is standard for European business cards, loyalty stamps, retail price tags, and transit ticket stubs.

View full A8 spec sheet →

Specification Comparison Table

8 Parameters
Parameter / Spec
A1 A1
A8 A8
Width × Height (Metric)
594 × 841 mm 52 × 74 mm
Width × Height (Imperial)
23.4 × 33.1 in 2.05 × 2.91 in
Nominal Surface Area
0.500 m² (500,000 mm²) 0.00390625 m² (1/256 m² — 3,848 mm²)
Exact Aspect Ratio
1 : √2 (1 : 1.4142) 1 : √2 (1 : 1.4142)
Weight of Standard 80 gsm Sheet
40.0 grams 0.3125 grams
Primary Applications
Architectural blueprints, conference presentation boards, large flipcharts, theatrical event posters European calling cards, retail product price swing tags, barcode labels, flash cards
Halving Relationship
Cut in half yields 2 sheets of A2
Comparison to ISO 7810 ID-1
Slightly smaller than credit card size (85.60 × 53.98 mm)