Pottery & Clay Calculators
Clay weight for a form, shrinkage allowance, glaze quantity, kiln load planning and the cost of a firing batch.
Ceramic Tile Cost Calculator
The material and firing cost of a batch of hand-made tiles, per tile and per square metre.
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Clay Shrinkage Calculator
Convert between wet and fired dimensions, and see what a linear shrinkage does to the volume and the capacity.
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Clay Weight Calculator
How much wet clay a wheel thrown or hand built form needs, worked out from the surface area and the wall thickness.
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Glaze Quantity Calculator
Glaze needed for a batch of pots, the dry glaze powder to make it, and the bucket size to mix it in.
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Kiln Cost Per Firing Calculator
The electricity cost of one firing and of each piece in it, from the kiln power, the duration and the duty cycle.
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Kiln Load Calculator
How many pieces fit on the kiln shelves, how many firings a batch needs, and the firing cost per piece.
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Pottery Cost Calculator
Cost one pot from the clay, glaze, firing and your own time, with a suggested retail price.
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Pottery Glaze Mixing Calculator
Scale a dry glaze recipe to fill a bucket at a target specific gravity, with the water and the material breakdown.
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Pottery Shrinkage Scale Calculator
Work backwards from a target fired size to the wet size to throw, and forwards from a thrown size to what it will fire to.
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Throwing Dimensions Calculator
Work out the diameter and height a lump of clay can make, and the clay needed for a shape you have in mind.
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Wheel Throwing Time Calculator
The wheel time for a batch and a realistic calendar including drying, bisque and glaze firing.
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Other calculator categories
Educational estimates only. Results on this page are free educational estimates based on the numbers you enter and standard formulas, not financial advice. Nothing you calculate here is stored.