Free Tools
Interactive calculators built for pottery and ceramics for beginners — wheel throwing, hand-building, glazing, kilns, and clay. No sign-up, no downloads — enter your numbers and get an answer you can act on.
Clay Shrinkage Calculator
Work out what wet size to throw or hand-build so a piece fires to the size you actually want, using your clay's shrinkage rate.
Glaze Batch Calculator
Turn a glaze recipe written in percent into exact grams for any batch size, and check that your recipe totals 100%.
Kiln Cone Temperature Lookup
Look up the firing temperature in °F and °C for Orton pyrometric cones 06 through 10, with the use case for each range.