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

B0 vs. B7

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

Comparing:
B0 B0
B7 B7

B0 is the largest standard size in the ISO 216 B-series, measuring exactly 1000 × 1414 mm (39.37 × 55.67 inches) with a surface area of √2 square meters (~1.414 m²). Defined with an exact 1-meter short edge, it is the international standard for giant subway transit advertisements, commercial billboards, and wall cartography.

View full B0 spec sheet →

B7 is an ISO 216 standard paper size measuring 88 × 125 mm (3.46 × 4.92 inches). Standardized under ICAO Doc 9303 as the official ID-3 machine-readable travel document format, it is the universal size for all national passport booklets issued worldwide.

View full B7 spec sheet →

Specification Comparison Table

8 Parameters
Parameter / Spec
B0 B0
B7 B7
Width × Height (Metric)
1000 × 1414 mm 88 × 125 mm
Width × Height (Imperial)
39.37 × 55.67 in 3.46 × 4.92 in
Nominal Surface Area
1.414 m² (√2 m² — 1,414,000 mm²) 0.011 m² (11,000 mm²)
Geometric Mean Origin
Geometric mean of A0 (841×1189 mm) and 2×A0 (1189×1682 mm) Geometric mean of A6 (105×148 mm) and A7 (74×105 mm)
Weight of 80 gsm Sheet
113.1 grams 0.88 grams
Primary Applications
Subway transit billboard posters, large geographic wall maps, tradeshow backdrop banners International national passports, small pocket memo booklets, specialized medical record booklets
Defining Dimension
Short edge is exactly 1.000 meter (1000 mm)
ICAO Travel Document Code
ID-3 format (Mandated for all electronic e-Passports globally)