# Required amount of water for the sourdough

Calculate the water amount needed for making sourdough usually for bread - based on starter amount, flour amount and desired hydration percentage of sourdough.

Assuming that starter is made of 100% hydration (same amount of water and flour).

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### Starter weight

Total amount of starter in grams - usually a combination of water and flour

### Flour weight

The total amount of flour you want to use in grams

### Desired percentage

Desired percentage of sourdough hydration

### Water amount

The amount of water in grams that needs to be added to achieve the desired percentage of hydration of the sourdough.