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Bookshelf Capacity Calculator

Calculate how many books fit on a shelf based on shelf dimensions and average book thickness.

Bookshelf Capacity

Bookshelf Capacity Formula:

Books per shelf = Shelf Width / Average Book Thickness

Total capacity = Books per shelf × Number of shelves

Unit conversions:

  • Inches to cm: multiply by 2.54
  • Cm to inches: divide by 2.54

Average book thicknesses:

  • Paperback novel: 0.5–0.8 in (1.3–2 cm)
  • Hardcover novel: 0.8–1.2 in (2–3 cm)
  • Textbook: 1.0–1.5 in (2.5–3.8 cm)
  • Comic/graphic novel: 0.3–0.5 in (0.8–1.3 cm)

Standard bookshelf dimensions:

  • Width: 24–36 in (60–90 cm)
  • Depth: 10–12 in (25–30 cm)
  • Shelf spacing: 10–12 in (25–30 cm)

Tip: Leave about 10–15% of shelf space empty for easy browsing and aesthetics.


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