Sourdough Starter Feed Calculator
Calculate the flour and water needed to feed your sourdough starter at a specific ratio and determine when it will peak.
Flour to Add
50 g
How to Calculate Sourdough Starter Feeding
Formula
Flour = Starter Weight x Ratio
Water = Starter Weight x Ratio
Total = Starter + Flour + Water
The feed ratio (starter : flour : water) controls how quickly the starter reaches its peak. A 1:1:1 ratio peaks in about 4 hours at 75°F. Higher ratios like 1:5:5 take longer but produce a more mellow, less acidic flavor.
Temperature Effect
Warmer environments speed fermentation. At 85°F a 1:1:1 feed may peak in 3 hours; at 65°F it may take 6 hours.
Example Calculation
50 g of starter with a 1:2:2 feed ratio at 75°F.
- 01Flour = 50 x 2 = 100 g
- 02Water = 50 x 2 = 100 g
- 03Total = 50 + 100 + 100 = 250 g
- 04Peak time = (75/75) x 6 = 6 hours
Frequently Asked Questions
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