Total flour including starter
Total formula · g
Allowed range: 0.001 to 10000000
Sourdough Recipe Calculator
Split total flour and water between a starter and the final mix.
Open this toolA sourdough formula can be balanced around total flour and total water, with part of each arriving through the starter.
Enter the starter hydration and prefermented flour share, then check what remains for the final mix. Keep starter percentage and flour percentage distinct.
Inputs and controls
Target total hydration
Total formula · %
Allowed range: 0 to 200
Flour held in starter
Total formula · %
Allowed range: 0 to 100
Salt / total flour
Total formula · %
Allowed range: 0 to 100
Starter hydration
Starter · %
Allowed range: 0.1 to 500
How to use
- Enter total flour including starter, target total hydration, flour held in starter and salt / total flour.
- Enter starter hydration.
- Select Calculate result. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.
Why use this tool
The split lets you weigh the starter and final ingredients without counting the same flour or water twice.
Before relying on the result
Prefermented flour percentage is not starter mass percentage. A formula that already has too much starter water is rejected.
Tool limitations
Prefermented flour percentage is not starter mass percentage. A formula that already has too much starter water is rejected.
Questions
Why can a requested formula be rejected?
A starter amount may already contribute more water than the target allows. Change the formula rather than treating a negative remaining quantity as an ingredient.
What should I check before using Sourdough Recipe Calculator?
Check Total flour including starter, Target total hydration, Flour held in starter and Salt / total flour. Use the exact units shown beside the controls and replace any example values with your own inputs.
Source page last modified: 2026-10-01T16:12:30+00:00. This profile describes the tool; use its page to run it.
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