Starter Feeding Calculator
Scale a sourdough starter feeding.
How the Starter Feeding Calculator works
Starter Feeding Calculator turns starter grams and feed ratio into flour to add. It computes that as starter weight times the feed ratio for flour and water.
Worked example: with Starter grams 50, Feed ratio 2, this tool returns flour to add 100 g, water to add 100 g, total after feed 250 g. That default state is deterministic, so you can check the page against a known result before trusting your own numbers.
Private, in your browser
Starter Feeding Calculator runs entirely in your browser with no upload, account, or server call. Every figure is a planning estimate, so confirm anything important against the authoritative source or a professional before you rely on it.
Frequently Asked Questions
How does the Starter Feeding Calculator work?
It computes flour to add as starter weight times the feed ratio for flour and water. It also reports water to add and total after feed.
Does this tool use live data?
No. It runs on the numbers you type, using local arithmetic that recalculates instantly — nothing is fetched, uploaded, or stored.
What should I keep in mind?
This assumes a 1:x:x feed with equal flour and water; adjust for stiffer or wetter starters.
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