Sourdough Bread Calculator

Free Sourdough Bread Calculator — compute flour, water, salt and starter weights for any dough weight using baker percentages and target hydration.

862.2K uses Updated · 2026-05-12 Runs locally · zero upload
AD

How to Use Sourdough Bread Calculator

The Sourdough Bread Calculator turns a tedious planning task into a few clicks. Each input maps directly to a concrete recommendation, and the result panel updates as you adjust the form.

  1. Enter the target dough weight and unit.
  2. Set the hydration percentage and salt percentage (typically 1.8–2.2%).
  3. Set the starter percentage and starter hydration.
  4. Read the flour, water, salt and starter amounts plus the effective dough hydration.

Formula & Theory — Sourdough Bread Calculator

Under the hood, the Sourdough Bread Calculator uses these formulas:

total_pct = 100 + hydration% + salt% + starter%
flour_g   = dough_weight × 100 ÷ total_pct
water_g   = flour_g × hydration%
salt_g    = flour_g × salt%
starter_g = flour_g × starter%

Every row in the result is derived from these formulas, so you can audit the recommendation, swap units, or rebuild the same numbers in a spreadsheet if you want to extend the model. The Sourdough Bread Calculator keeps the math transparent so you stay in control of your shopping or cooking decisions.

Use Cases for Sourdough Bread Calculator

The Sourdough Bread Calculator is built for real-world planning. Common scenarios include:

  • Home bakers dialling in consistent loaves week after week.
  • Sourdough bakeries scaling production from a single proven formula.
  • Culinary students learning to read and use baker’s percentage.
  • Recipe developers designing new sourdough variants with predictable hydration.
  • Bread bloggers documenting recipes so readers can scale them at home.

Whether you’re organising a party, designing a recipe, or simply trying to avoid waste, the Sourdough Bread Calculator delivers an instantly actionable plan that scales from one guest to dozens.

Frequently asked questions about Sourdough Bread Calculator

What is baker’s percentage?

Baker’s percentage expresses every ingredient as a percentage of flour weight. The Sourdough Bread Calculator uses it to scale recipes precisely for any dough weight.

How does the calculator handle starter hydration?

The Sourdough Bread Calculator subtracts the flour and water already inside your starter so the effective dough hydration matches your target.

Is the bulk ferment time accurate?

It is a rough guideline based on starter strength and room temperature. The Sourdough Bread Calculator emphasises judging dough behaviour over time alone.

Can I scale to bigger or smaller loaves?

Yes. Just change the target dough weight (g, kg, oz) and the Sourdough Bread Calculator rescales every ingredient.