Your book’s size (called trim size) depends on genre, printing cost, and reader expectations.
Popular sizes:
- 5” x 8” – poetry or small non-fiction
- 6” x 9” – standard non-fiction or fiction
- 8.5” x 11” – workbooks or journals
- 8” x 10” – children’s picture books
Smaller sizes feel more compact, larger ones feel more spacious. Choose based on purpose, aesthetics, and how you want the book to be used.