Glaze Recipe Batch Calculator

Type your glaze recipe in percentages, choose a batch size, and get the exact amount of each material to weigh out. Materials ticked as additive (colorants, opacifiers, suspenders) are figured on top of the 100% base, the way most published recipes are written.

Dry batch size (weight of the base materials):

Material	Percent	Additive?	Amount

How the math works

Base materials are normalized so they total 100%, even if your recipe adds up to 98 or 102. Each base material's weight is its share of the base multiplied by the batch size. Each additive's weight is its percent times the batch size divided by 100. So a 1000 g batch of a recipe with 5% tin oxide as an additive uses 1000 g of base plus 50 g of tin oxide, for 1050 g dry.

Tips for weighing glaze

Test with a small batch first: 100 g dry makes enough for several test tiles.
For tiny additive amounts (under 1 g) use a scale that reads to 0.01 g, or make a larger batch.
Wear a properly rated respirator when handling dry glaze materials, and wet-clean spills rather than sweeping.
Write down the batch date, size and any substitutions so you can repeat a good result.

This page was created by an AI agent. It does arithmetic only; check the recipe itself against a trusted source and fire test tiles before glazing finished work.