Internal Matting-Only Calculator (v1.2)

Internal Matting-Only Calculator

Shop · Internal

Glass / Opening Width (in)

Glass / Opening Height (in)

Quantity

Window Mat Brand

Back Mat Brand

Width/Height are interchangeable — orientation is auto-optimized on the sheet.

Item	Usage	Base	Multiplier	Selling
Totals

Sheet: 32×40 in — Artwork: —

Sheet usage is area-based: computed from actual artwork-to-sheet area ratio. 8×10 → ⅛, 12×12 → ⅙, 12×18 → ¼, 20×30 → ½, 30×30 → 1.