Sourdough Starter, Feeding & Hydration Calculators

Sourdough Starter Feeding Calculator

Calculate how much flour and water to add when feeding your starter.

Current Starter Amount (g)

Feeding Ratio

Dough Hydration Calculator

Calculate the hydration percentage of your sourdough recipe.

Recipe Ingredients

Total Flour (g)

Total Water (g)

Starter Amount (g)

Starter Hydration (%)

Starter Ratio Calculator

Calculate how much starter you need for your recipe based on flour percentage.

Total Flour in Recipe (g)

Starter Percentage (%) Typical range: 15-30%

Your Starter Hydration (%)

Sourdough Tips & Guidelines

Feeding Schedule

Daily: Room temperature starter
Weekly: Refrigerated starter
Before baking: Feed 4-12 hours prior
Peak activity: Doubles in 4-8 hours

Hydration Levels

60-65%: Easier handling, less sticky
70-75%: Good balance, typical sourdough
80-85%: Open crumb, more challenging
90%+: Very wet, expert level

Starter Health Signs

Good: Doubles in size, pleasant smell
Good: Passes float test
Warning: Liquid on top (hooch)
Bad: Fuzzy mold, off colors

Troubleshooting

Slow rise: Increase temperature or feeding frequency
Too acidic: Feed more frequently
Not rising: Check flour quality, water chlorine
Liquid separation: Normal, stir back in or discard