Free Ceramic Calculators — 50+ Tools for Potters & Engineers
Scientifically accurate ceramic tools covering every stage of the making process — from calculating clay shrinkage and sizing wet pieces, to glaze batch scaling, kiln firing schedules, and studio business math. All calculators are free, run in the browser, and require no account.
Slip Casting
Slip Specific Gravity Calculator
Calculate slip specific gravity from weight measurements to determine slip consistency for casting.
Plaster Mixing Calculator
Calculate exact plaster and water weights needed to fill a mold volume using the WCR method.
Slip Casting Cycle Calculator
Estimate casting time, drain time, demold window, and mold drying time for plaster slip casting.
Brongniart's Formula Calculator
Calculate dry material content and water content in a slip using Brongniart's formula.
Plaster Mold Volume Calculator
Calculate how much pottery plaster and water to mix for a block, cylinder, or oval casting mold based on cavity dimensions and wall thickness.