Pattern & Dimensional ScalingTanner Guild

Scale sewing and cutting patterns up or down uniformly. Convert dimensions between source and target sizes.

Leather Parameters
Uniform Scale Factor120%
50% (Half Size)100% (Original)250% (Large)
Scaled Pattern Output
New Width240.0mm
New Height180.0mm

Note on stitch spacing scaling:

⚠️ Warning: Scaling pattern layouts changes seam path lengths. If stitching guides are pre-punched onto the paper pattern, scaling will scale the stitch hole spacing as well. Re-punch using standard pricking irons rather than scaled pattern marks.

Material and calculation specifications designed for professional saddlers and leathercraft hobbyists. Measure twice, cut once.

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