Pottery
Shrinkage Calculator

Enter your target finished dimensions — we'll tell you how large to make your wet piece, with a visual before & after comparison.

Advanced: separate drying / bisque / glaze shrinkage

Percentages are applied sequentially. Separate stage sizes shown in results.

How to measure

Got a piece you love? Measure the fired dimensions and enter them above.

Dimension Finished target Min wet size Max wet size Mid wet size
Visual comparison
mid
Wet clay
Fired piece
Shrinkage range