Definition & Meaning of "B-format"

B-format

a book that measures approximately 5.1 x 7.8 inches (130 x 198 mm) and is generally larger than a mass-market paperback but smaller than a trade paperback

What is "B-format"?

B-format refers to a specific size of paperback books, typically measuring around 5 inches by 7.75 inches, or 129 mm by 198 mm. This format is larger than mass-market paperbacks but smaller than trade paperbacks. B-format books are commonly used for literary fiction, non-fiction, and other genres aimed at a general readership. The size makes them more portable than larger formats while still offering enough space for comfortable reading.