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Cut size and blank fit calculator

Find the largest aspect-preserving fit inside a measured blank, with your own margins and optional rotation.

Example design dimensions. Replace these with your own measurements.

A file canvas may include gaps and separate pieces. It does not reveal their assembled size. Changing this choice clears the design dimensions.

Your largest fit

Blank outline and centered design

This is a mathematical fit. Hole sizes and fine details scale too; this calculation does not predict how a material will cut.

Measuring a favor-box belly band?

Measure the two sides the band wraps around on the assembled box. Add your chosen total clearance and overlap. The straight strip length changes; keep the decorative front separate.

Uses the unit selected above.

Measure the space you will actually use

Measure the flat usable area yourself. Curved edges, seams and hardware can make the usable space smaller than the item’s overall size. Enter that width and height, then choose how much empty space to leave on each edge. The tool preserves the design’s proportions and compares a 90-degree rotation when allowed.