Pottery calculators — CeramikaTo
Shrinkage, recipes, firing cost, kiln capacity, clay and glaze in one lightweight service.
Green size before shrinkage
Calculate the wet size needed to reach a target after drying and firing.
Size after drying and firing
Calculate dry size, fired size and compounded total shrinkage.
Drying shrinkage
Calculate the percentage change from wet to dry length.
Firing shrinkage
Calculate the change from dry to fired length.
Fired clay water absorption
Calculate water uptake relative to dry fired mass.
Scale a ceramic recipe
Scale four ingredients to any batch mass and normalize percentages.
Recipe weights to percentages
Convert ingredient weights into recipe percentages.
Colorant or oxide addition
Calculate an addition percentage relative to the base recipe.
Blend two ceramic materials
Split a batch between two materials by percentage.
Kiln firing electricity cost
Estimate energy and cost from kiln power, time, tariff and duty factor.
Firing cost per piece
Allocate firing and extra material cost across successful pieces.
Kiln load capacity
Estimate pieces per shelf with spacing, rotation and utilisation.
Clay needed for a series
Calculate clay mass for a batch with waste and testing allowance.
Glaze needed by surface area
Estimate dry glaze mass from area, coats and waste allowance.