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.
Clay & Shrinkage
Clay Shrinkage Calculator
Calculate drying, firing, and total shrinkage rates from wet, dry, and fired measurements.
Target Finished Size Calculator
Calculate the wet throwing size needed to achieve a specific finished fired dimension.
Clay Weight Estimator
Estimate the correct amount of wet clay needed for a pot based on dimensions and form type.
Drying Time Predictor
Estimate how long a ceramic piece will take to dry based on wall thickness, humidity, and airflow.
Crack Risk Calculator
Assess the cracking risk of a ceramic piece during drying based on form, clay type, and conditions.
Multi-Axis Shrinkage Calculator
Measure shrinkage in X, Y, and Z axes to detect anisotropic behavior and warping risk.
Clay Water Requirement Calculator
Calculate how much water to add to dry clay powder to reach a workable consistency.
Slab Size & Weight Calculator
Calculate the wet cutting dimensions and clay weight for a slab with a target fired size.
Clay Body Blend Calculator
Blend two clay bodies by percentage and predict the shrinkage and absorption of the resulting mix.
Grog Addition Calculator
Calculate how much grog to add to reduce clay body shrinkage to a target percentage.
Clay Moisture Content Calculator
Measure clay moisture percentage from wet and dry weights, or calculate how much water to add or remove to reach a target working consistency.
Wheel Throwing Weight Calculator
Calculate how much wet clay you need to throw a cylinder, mug, bowl, plate, or vase based on target dimensions and wall thickness.
Clay Inventory Calculator
Calculate how many ceramic pieces you can make from your current clay stock, accounting for trimming waste, cracking losses, and kiln scrap.