Clay Calc

Wet size calculator

Clay

Shrinkage, wet to fired

FiredMake it wet

Browse all clays

Values are copied as published by each manufacturer. An orange source tag means that value came from somewhere other than the maker's own site (e.g. a copy of their data sheet). "Not published" means the maker didn't state it or it couldn't be read.

Temperatures shown as "approx." are converted from Orton cones (self-supporting, 60 °C/h final rate) and are a guide only. Shrinkage and absorption vary with kiln, firing schedule and atmosphere: always fire test tiles before committing to sizes or functional use. Data checked October 2026.