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

A10 vs. A6

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

Comparing:
A10 A10
A6 A6

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 →

A6 is an ISO 216 standard paper size measuring 105 × 148 mm (4.13 × 5.83 inches), with a surface area of 1/64 square meter. Created by folding an A4 sheet into quarters, it is the worldwide postal standard for international picture postcards, pocket diaries, and point-of-sale receipt slips.

View full A6 spec sheet →

Specification Comparison Table

9 Parameters
Parameter / Spec
A10 A10
A6 A6
Width × Height (Metric)
26 × 37 mm 105 × 148 mm
Width × Height (Imperial)
1.02 × 1.46 in 4.13 × 5.83 in
Nominal Surface Area
0.0009765625 m² (1/1024 m² — 962 mm²) 0.015625 m² (1/64 m² — 15,625 mm²)
Exact Aspect Ratio
1 : √2 (1 : 1.4142) 1 : √2 (1 : 1.4142)
Weight of Standard 80 gsm Sheet
0.078 grams 1.25 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
Matching Postal Envelope
C6 Envelope (114 × 162 mm)
Primary Applications
International postcards, pocket notebooks (Field Notes style), thermal photo prints, lab sample tags