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

B0 vs. B4

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

Comparing:
B0 B0
B4 B4

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 →

B4 is an ISO 216 standard paper size measuring 250 × 353 mm (9.84 × 13.90 inches) with a surface area of ~0.088 square meters. Sized intermediate between A3 and A4, it is the worldwide standard for printed orchestral sheet music, professional accounting ledgers, and Japanese manga manuscript paper.

View full B4 spec sheet →

Specification Comparison Table

8 Parameters
Parameter / Spec
B0 B0
B4 B4
Width × Height (Metric)
1000 × 1414 mm 250 × 353 mm
Width × Height (Imperial)
39.37 × 55.67 in 9.84 × 13.90 in
Nominal Surface Area
1.414 m² (√2 m² — 1,414,000 mm²) 0.088 m² (88,250 mm²)
Geometric Mean Origin
Geometric mean of A0 (841×1189 mm) and 2×A0 (1189×1682 mm) Geometric mean of A3 (297×420 mm) and A4 (210×297 mm)
Weight of 80 gsm Sheet
113.1 grams 7.06 grams
Primary Applications
Subway transit billboard posters, large geographic wall maps, tradeshow backdrop banners Classical sheet music scores, accounting ledgers, Japanese manga manuscripts
Defining Dimension
Short edge is exactly 1.000 meter (1000 mm)
Japanese JIS B4 Distinction
JIS B4 is slightly larger (257 × 364 mm) due to historical Mino paper origins