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

B6 vs. B7

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

Comparing:
B6 B6
B7 B7

B6 is an ISO 216 standard paper size measuring 125 × 176 mm (4.92 × 6.93 inches) with a surface area of ~0.022 square meters. Created by cutting a B5 sheet in half, it is standard for mass-market paperback novels, Japanese manga tankōbon volumes, and multi-language consumer product warranty booklets.

View full B6 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
B6 B6
B7 B7
Width × Height (Metric)
125 × 176 mm 88 × 125 mm
Width × Height (Imperial)
4.92 × 6.93 in 3.46 × 4.92 in
Nominal Surface Area
0.022 m² (22,000 mm²) 0.011 m² (11,000 mm²)
Geometric Mean Origin
Geometric mean of A5 (148×210 mm) and A6 (105×148 mm) Geometric mean of A6 (105×148 mm) and A7 (74×105 mm)
Weight of 80 gsm Sheet
1.76 grams 0.88 grams
Primary Applications
Paperback novels, manga volumes (Tankōbon), consumer electronics warranty manuals International national passports, small pocket memo booklets, specialized medical record booklets
Japanese JIS B6 Distinction
JIS B6 (128 × 182 mm) is the standard commercial manga tankōbon format
ICAO Travel Document Code
ID-3 format (Mandated for all electronic e-Passports globally)