Examples
Examples
Try the starting example
- Book block leaf width (mm)
- 150
- Book block height (mm)
- 220
- Added hinge allowance per leaf (mm)
- 5
- Trimming allowance at each outside edge (mm)
- 3
- Books
- 10
- Unfolded endpaper blank width (mm)
- 316
- Unfolded endpaper blank height (mm)
- 226
- Endpaper sheets for both book ends
- 20
- Total blank paper area (m²)
- 1.42832
Try another scenario
- Book block leaf width (mm)
- 150
- Book block height (mm)
- 220
- Added hinge allowance per leaf (mm)
- 0
- Trimming allowance at each outside edge (mm)
- 0
- Books
- 1
- Unfolded endpaper blank width (mm)
- 300
- Unfolded endpaper blank height (mm)
- 220
- Endpaper sheets for both book ends
- 2
- Total blank paper area (m²)
- 0.132
Calculation method
Calculation method
Unfolded endpaper blank width (mm)
2 × (book leaf width + added hinge allowance) + 2 × outside trim.
Unfolded endpaper blank height (mm)
Book block height + 2 × outside trim.
Endpaper sheets for both book ends
Two folded endpaper sheets per book.
Total blank paper area (m²)
Blank width × height × sheet count / 1,000,000.
Symbols and units
- a
- Book block leaf width (mm)
- b
- Book block height (mm)
- c
- Added hinge allowance per leaf (mm)
- d
- Trimming allowance at each outside edge (mm)
- e
- Books
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A specified folded-blank convention with the hinge allowance added to EACH leaf width. It does not infer board overhang, pastedown geometry, turn-ins or a binding method; verify the blank pattern with your binder.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: arithmetic and geometry ↗
Background reading; this does not imply endorsement or independent review of SumFizz.