Sourdough starter feeding calculator
Feed ratio is starter : flour : water (e.g. 1:1:1 or 1:5:5).
- Use starter
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- Add flour
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- Add water
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- Final weight
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If a target weight is set, the starter portion is scaled to match. Discard excess starter, then feed.
About this tool
Sourdough starter feeding calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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