Sourdough Starter Feeding Calculator
Choose how much starter you need and your feeding ratio, and get the exact grams of starter, flour and water to mix.
How fast a starter peaks depends mostly on temperature and on your starter. As a rough guide in a warm kitchen, a 1:1:1 feeding often peaks within about 4 to 6 hours, and higher ratios like 1:5:5 or 1:10:10 take noticeably longer, which is useful for overnight feedings. Watch your own starter and note its peak time.
Guides on this topic
GuideSourdough Baking Schedule for a 9-to-5 Job (3 Weekday Timelines)
Three sourdough schedules that fit around a full-time job, using the fridge as a pause button, plus how to adjust for temperature.
GuideSourdough Starter Feeding Ratios Explained (1:1:1 vs 1:5:5)
What sourdough starter feeding ratios mean, how they change peak timing, which to use for your schedule, and real gram examples.
GuideWhy Is My Sourdough Dense? 9 Real Fixes for a Flat, Gummy Loaf
Why sourdough turns out dense or gummy: underproofing, weak gluten development, hydration and shaping mistakes, and oven fixes, in order.