Cooking Sourdough Hydration Calculator
Sourdough flour/water balance includes independently characterized starter water/flour, unlike simple already-total water/flour hydration; assumes starter contains only flour/water. Caller establishes matching ingredient basis and method. Not food-safety, doneness, preservation or allergy certification.
Description
Sourdough hydration divides total water by total flour including starter contributions.
Sourdough hydration divides total water by total flour including starter contributions.1
Starter mass alone is insufficient without its water fraction. Use Cooking Sourdough Hydration Calculator to evaluate the supplied inputs under the specific model below.
When to use Cooking Sourdough Hydration Calculator
Use Cooking Sourdough Hydration Calculator to evaluate the supplied inputs under the specific model below. Establish the units, measurement scope and applicable model or recipe assumptions before entering values.
How to use Cooking Sourdough Hydration Calculator and understand its results
- Establish the units, measurement scope and applicable model or recipe assumptions before entering values.
- Enter Added flour g, Added water g, Starter mass g, Caller starter water mass fraction using the field table and validation rules below, then run the tool.
- Read Total flour g, Total water g, Starter inclusive hydration percent and interpret units, signs, ordering and placeholders as explained below.
- If the tool reports an input error, correct that field and rerun. A successful false result, empty match list or unknown-evidence placeholder has the specific meaning described here; check the limitations before applying the result.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| addedFlourG | Added flour g | number | Required; constraints below |
| addedWaterG | Added water g | number | Required; constraints below |
| starterMassG | Starter mass g | number | Required; constraints below |
| callerStarterWaterMassFraction | Caller starter water mass fraction | number | Required; constraints below |
Enter nonnegative added flour, added water and starter masses in g and starter water mass fraction from 0 to 1. Split starter into water and non-water flour mass, add both contributions and require total flour to be positive. Return 100×water/flour. This assumes the starter's non-water component is counted as flour and does not infer starter hydration.
totalFlour = addedFlour+starter×(1−starterWaterFraction); totalWater = addedWater+starter×starterWaterFraction; hydrationPercent=100×totalWater/totalFlour Field order, units and branch conditions follow the implementation explanation above.
| Output field | Meaning | Value type |
|---|---|---|
| totalFlourG | Total flour g | number |
| totalWaterG | Total water g | number |
| starterInclusiveHydrationPercent | Starter inclusive hydration percent | number |
{
"input": {
"addedFlourG": 100,
"addedWaterG": 50,
"starterMassG": 60,
"callerStarterWaterMassFraction": 0.5
},
"output": {
"totalFlourG": 130,
"totalWaterG": 80,
"starterInclusiveHydrationPercent": 61.53846153846154
}
}Limitations and assumptions
Starter mass alone is insufficient without its water fraction. Apply the exact scope and assumptions described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are stated above; extremely large inputs or outputs can also be rejected. These errors differ from successful results such as false, no matches or unknown evidence.
Alternative or Complementary methods
Use Cooking Sourdough Starter Feed Ratio Calculator for a related task: Starter feeding adds flour and water to an already mixed starter.
Use Cooking Yeast Amount Calculator for a related task: Yeast quantity can be expressed as a flour-mass fraction adjusted for matched potency.
References
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Cooking Sourdough Hydration Calculator — tool.io
Similar or alternative tools
- Cooking Sourdough Starter Feed Ratio Calculator
Starter feeding adds flour and water to an already mixed starter.
- Cooking Yeast Amount Calculator
Yeast quantity can be expressed as a flour-mass fraction adjusted for matched potency.