Spine Width Calculator

The Spine Width Calculator is a tool within Momovu that helps book publishers and designers calculate the spine width for their book covers and dustjackets based on the page count.

Accessing the Calculator

The Spine Width Calculator can be accessed from the main menu:

  1. Open Momovu

  2. Go to Document → Spine Width Calculator…

  3. Or use the keyboard shortcut: Ctrl+K

Using the Calculator

The calculator dialog provides a simple interface:

  1. Page Count Input: Pre-filled with your current document’s page count - For interior documents: Uses the total page count from the PDF - For covers/dustjackets: Uses the value from the Pages spinbox in the toolbar

  2. Document Type Selection: Choose between Cover or Dustjacket

  3. The spine width is calculated automatically as you change the inputs

Spine Width Calculator dialog

Results

The calculator displays the spine width in millimeters.

  • Minimum pages: Covers require at least 32 pages

  • Minimum spine width: 6.35mm (0.25 inches) for covers

  • Standard range: Dustjackets work best with 24-800 pages

Examples

Cover Examples:

  • 200 pages = 11.44mm spine width

  • 500 pages = 28.6mm spine width

  • 112 pages = 6.406mm spine width

Dustjacket Examples:

  • 350 pages = 27mm spine width

  • 100 pages = 13mm spine width

Note

Different printers may use different paper thicknesses. These calculations are based on standard print-on-demand specifications.