ClayHub Calculators
Welcome to the ultimate suite of ceramic calculators. Whether you're engineering a new glaze, estimating throwing weights, or casting slip, these tools are designed to take the guesswork out of your studio practice.
Available Calculators
Clay Shrinkage Calculator
Calculate drying, firing, and total shrinkage rates from wet, dry, and fired measurements.
Target Size Calculator
Calculate the wet throwing size needed to achieve a specific finished fired dimension.
Kiln Firing Cost Calculator
Estimate the electricity cost of a kiln firing based on wattage, duration, and local electricity rates.
Plaster Mixing Calculator
Calculate exact plaster and water weights needed to fill a mold volume.
Wheel Throwing Weight Calculator
Find out how much clay you need to throw a pot. Enter vessel type, height, diameter, and wall thickness to get the correct clay weight including waste.
Glaze Chemistry (UMF)
Calculate Unity Molecular Formula (UMF), Seger formula, and Silica/Alumina limits for any glaze recipe.
Specific Gravity Calculator
Calculate the density of a slip or glaze compared to water.
Porosity & Absorption Calculator
Determine the water absorption and apparent porosity of a fired clay body.
Studio Pricing Calculator
Calculate wholesale and retail prices based on material cost, labor, and profit margins.
Kiln Element Power Calculator
Calculate the electrical amperage and wattage of kiln elements based on resistance and studio voltage.
Glaze Colorant Calculator
Calculate the exact grams of colorants to add to a batch of base glaze.
saveSave to Workspace
Every calculation you perform can be instantly saved to your personal Workspace. Build a library of your specific clay bodies, plaster mixes, and shrinkage rates to access them whenever you need.