Open-source ceramic chemistry software

UMF calculator for ceramic glaze chemistry

Convert recipe percentages into Unity Molecular Formula so you can see fluxes, stabilizers, glass formers, and the SiO₂:Al₂O₃ balance.

View OpenGlaze on GitHub Self-host with Docker

Short answer

A UMF calculator converts glaze materials into normalized oxide chemistry. OpenGlaze uses this to show the flux unity, silica-to-alumina ratio, and oxide roles that affect melt, durability, surface, and fit.

Why it matters

A recipe like “feldspar 45, silica 25, whiting 18, kaolin 12” does not show the underlying oxide balance. UMF does.

Private by default

The supported launch path is self-hosted SQLite with Docker volumes, so studio recipes stay under your control.

Computational, not magic

The optimizer uses chemistry calculations and ranked suggestions; kiln tests still confirm real-world results.

How OpenGlaze helps

Paste a batch recipe into OpenGlaze.

OpenGlaze maps materials to oxides and normalizes fluxes to unity.

Use the calculated ratio and oxide roles to compare recipes consistently.

FAQ

What does UMF mean?

UMF means Unity Molecular Formula, a normalized way to compare ceramic glaze chemistry.

Does OpenGlaze replace firing tests?

No. It helps choose smarter tests; real kiln tests still confirm results.