Glaze Unity Formula
Convert a glaze recipe from percentages to unity molecular formula (UMF) for glaze chemistry analysis.
Inputs
The glass former - grams of silica in your batch
The stabilizer - controls melt viscosity and durability
Primary flux at cone 6+ - usually from whiting or wollastonite
Strong alkaline flux - typically from feldspar or frit
Alkaline flux - usually rides in with potash feldspar
Secondary flux - adds butteriness; from talc or dolomite
Secondary flux - promotes crystal growth in some glazes
Results
SiO2 (unity)
3.23
Al2O3 (unity)
0.32
SiO2:Al2O3 Ratio
10.18:1
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Start FreeGlaze Unity (UMF) Calculator
Artysan by Irora Labs
July 16, 2026
Inputs
| SiO2 (Silica) | 180 g |
| Al2O3 (Alumina) | 30 g |
| CaO (Calcium Oxide) | 40 g |
| Na2O (Sodium Oxide) | 10 g |
| K2O (Potassium Oxide) | 5 g |
| MgO (Magnesium Oxide) | 0 g |
| ZnO (Zinc Oxide) | 0 g |
Results
| SiO2 (unity) | 3.23 |
| Al2O3 (unity) | 0.32 |
| SiO2:Al2O3 Ratio | 10.18:1 |
Created with Artysan. artisan.iroralabs.com/craft-calculators/glaze-unity
Tips
Open formula
Converts weight percentages to moles of each oxide, normalizes fluxes to 1.0.
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