Free Tool: Sourdough ↔ Yeast Recipe Converter

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One of the most common questions I see in baking communities is "how do I convert this yeast recipe to sourdough?" (or the other way around). The math isn't hard once you know it, but it trips people up every single time.

So we built a tool for it.

At Crust & Crumb Academy, we develop free resources for home bakers. This is one of them. Paste in any recipe (or upload a photo of one), and it handles the conversion for you. Both directions.

What it does:

Converts yeast recipes to sourdough with a full levain build and adjusted fermentation schedule
Converts sourdough recipes back to commercial yeast with correct ratios
Detects enriched doughs (brioche, milk bread, challah) and adjusts timing accordingly
Lets you edit ingredients after parsing if something looks off
Calculates hydration automatically
Gives you complete method steps, not just ingredient swaps
Saves your recipes so you can come back to them
Downloads as PDF or prints cleanly
Works in English and Spanish

It's free. No signup. No email required. Just use it.

👉 sourdough-yeast-converter-5rtj.vercel.app

We built this because we believe better tools make better bakers. If it helps even one person in your community stop guessing at conversions and start baking with confidence, that's a win.

If you want to see what else we're building for home bakers, Crust & Crumb Academy is where it all lives: https://www.skool.com/crust-crumb-academy-7621/about

Happy baking. 🍞

— Henry

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