Pattern Scale Calculator

Find the correct scale percentage for printing patterns at home, or calculate the scaling factor for your measurements.

Printer / Copier Scale

Print a test square, measure it, and find the exact scale % to set on your printer.

Printed measurement (what you measured on paper)

Actual measurement (what it should be)

Find the scaling factor to adjust a pattern from its printed size to your finished garment size.

Your body measurement

Ease to add (same unit as above)Pattern's printed measurement (same unit)

Always print a test square and verify before cutting fabric. Paper shrinks slightly when printing — check both horizontal and vertical axes.