Book Signature Calculator
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Sheets and signature count from total pages and pages per folded sheet — planning estimate for print imposition.
Page count
Sheets needed
8
128 pages @ 8 pages/side (16 per sheet)
- Pages per sheet
- 16
- Signature groups (est.)
- 2
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Book signatures
Printed books are imposed on large sheets, folded into signatures, and bound. A 16-page signature uses one sheet printed both sides (8 pages per side × 2 sides = 16 pages). Total sheets = ceil(pages ÷ pages per sheet).
Page count usually includes both sides — a 32-page booklet needs 16 physical sheets if each sheet is one page, or fewer if printed as multi-page signatures. Enter pages per side of the press sheet (4, 8, etc.) as your printer specifies.
Example: 128-page book, 8 pages per side (16 per sheet) → 8 sheets. Signature count depends on binding — perfect binding uses single-sheet signatures; saddle stitch folds nested sheets.
Common questions
What are pages per side?
How many book pages fit on one side of a press sheet before folding. Your print shop's imposition software determines the exact count.
Does cover count?
Enter interior page count only unless your printer includes cover pages in the same run.