Pottery & Ceramics Tools
Shrinkage, glaze batches and vessel volumes — the studio arithmetic that decides whether a lid fits.
Work out total shrinkage from the drying and firing stages, and how large to throw a piece so it finishes on size.
Glaze Batch CalculatorScale a glaze recipe to any batch size, keeping colourant additions on top of the base where they belong.
Vessel Capacity CalculatorInterior volume of a straight or tapered pot in millilitres and fluid ounces, with the average-diameter shortcut measured against the real thing.
Throwing Weight CalculatorHow much clay to centre for a form, and why a pot twice the size takes under four times the clay rather than eight.
Kiln Load CalculatorHow many pieces fit in a firing and what each one costs — a half-full kiln doubles the cost of everything in it.
Plaster Mix CalculatorPlaster and water for a mould at any consistency — where a higher number means a wetter, softer mix, not a thicker one.