Pottery Calculators
Free pottery and ceramics calculators for kiln firing schedules, glaze chemistry, clay shrinkage, and more.
Tools for potters and ceramic artists.
Pottery Kiln Electricity Cost Calculator
Estimate pottery kiln electricity cost per firing. Enter kiln size, cone target, and local kWh rate for cone 06, cone 6, and cone 10 firings.
Pottery Bone-Dry Drying Schedule Calculator
Calculate pottery drying time from leather-hard to bone-dry. Get a day-by-day schedule for plates, bowls, mugs, and sculpture by clay thickness and humidity.
Pottery Slab Thickness Calculator
Calculate slab thickness for pottery from piece dimensions, clay type, and use. Covers dinnerware, sculpture, tiles, and platters in stoneware and porcelain.
Pottery Throwing Speed by Form Calculator
Find the optimal wheel speed in RPM for throwing bowls, cylinders, vases, and plates from form diameter and clay type. Covers stoneware and earthenware.
Kiln Shelf Load Weight Calculator
Calculate maximum safe weight per kiln shelf from shelf dimensions and temperature range. Returns total safe load and post spacing for bisque and glaze firings.
Pottery Bisque Kiln Load Calculator
Calculate how many pottery pieces fit in your kiln for bisque firing based on kiln size, piece dimensions, and stacking rules.
Pottery Clay Weight Calculator
Calculate clay weight needed for bowls, mugs, plates, vases, and other pieces from dimensions and wall thickness. Supports lbs and grams for studio use.
Pottery Coil Building Height Calculator
Calculate coil count and clay weight to build a pottery vessel from coil diameter, wall thickness, and target height. Useful for hand-building bowls and vases.
Pottery Glaze Thickness Calculator
Calculate optimal glaze thickness from cone temperature, application method, and type. Returns target dry thickness in mm for dipping, brushing, and spraying.
Pottery Handle Pull Weight Calculator
Calculate the right clay weight for pulled handles from mug size, handle style, and cross-section thickness. Helps potters plan handle proportions and weight.
Pottery Throwing Weight Guide Calculator
Calculate ideal clay throwing weight for mugs, bowls, and vases from target dimensions. Returns wet weight with 10-15% shrinkage for stoneware and porcelain.
Pottery Wheel Speed (RPM) Calculator
Calculate the ideal pottery wheel RPM based on your clay piece diameter, technique, and skill level for optimal centering and throwing.
Clay Shrinkage Calculator
Calculate the wet clay size needed to achieve your target fired size. Accounts for drying shrinkage and firing shrinkage for any clay body.
Glaze Recipe Scaler
Scale pottery glaze recipes by batch weight in grams or lbs. Enter percentages and total weight to get exact amounts for cone 6 and cone 10 firings.
Kiln Firing Schedule Calculator
Calculate kiln firing times and ramp rates for bisque and glaze firings. Covers cone temperatures from 06 to 10 for electric and gas kilns.