Clay Shrinkage Calculator

Convert between wet and fired dimensions, and see what a linear shrinkage does to the volume and the capacity.

Which direction are you converting?

The third option works out the shrinkage of a piece you have already fired, which is how you find your own figure.

Linear shrinkage from wet to fired %

Five to twelve percent is typical. Seven percent is a common stoneware mid range figure.

Wet diameter cm

The dimension as it comes off the wheel or out of the mould.

Wet height cm

Measured fired diameter cm

Only used by the comparison option, to work out the shrinkage you actually got.

Wall thickness mm

Used for the interior capacity. The wall thickness shrinks with the pot, so it is quoted fired here.

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Free calculator by Handcraft worked examples and methodology No account, nothing stored.