Cooking & Food · Free tool
Sourdough Hydration Calculator
Baker’s hydration ratio with starter accounting. Tier-labeled from stiff to high-hydration.
Updated April 2026
Total hydration
72.7%
Classic sourdough
Standard open-crumb country loaf
Total flour
550 g
(incl. 50g from starter)
Total water
400 g
(incl. 50g from starter)
Salt
11.0 g
Total dough
961 g
Scaled recipe to 950g total
Flour494 g
Water346 g
Starter99 g
Salt10.9 g
Hydration accounts for water contribution from your starter (half its weight at 100% hydration). Tiers: 55–65% stiff, 70–75% classic, 80–85% high-hydration, 90%+ expert.
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What it does
Hydration math minus the sourdough-forum confusion. Accounts for starter water content so your 70% really is 70%.
Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/sourdough-hydration-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="Sourdough Hydration Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Enter flour, water, starter.
- Read total hydration %.
- Compare to tier.
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