Biga Build Calculator

How to Use the Biga Build Calculator

Enter all flour in the dough formula, overall hydration, the flour share assigned to biga, and biga hydration. Add the entered yeast and salt percentages.

The result separates biga flour and water from the final mix. It also shows biga yeast, final salt, and the complete dough weight.

Biga Build Formula

Biga flour equals total formula flour multiplied by the biga flour share. Biga water equals biga flour multiplied by biga hydration.

Total dough water equals total flour multiplied by overall hydration. Final-mix flour and water are the complete amounts minus the biga components.

Worked Biga Example

A dough with 1,000 g flour and 20% flour in biga assigns 200 g flour to the preferment. At 55% hydration, the biga uses 110 g water.

A 65% overall hydration requires 650 g water. The final mix therefore receives 800 g flour and 540 g water.

Biga Is a Stiff Preferment

This tool keeps biga hydration separate from finished dough hydration. The lower preferment hydration creates a stiff build rather than a liquid poolish.

Names alone do not guarantee one hydration. Enter the actual percentage from a tested formula instead of relying on a label.

Do Not Add Biga Ingredients Twice

Biga flour and water come from the total formula. They are moved into an earlier stage, not added above the complete totals.

The final-mix lines show only the amounts still needed. Adding the biga lines again would enlarge the dough and change hydration.

Check Whether the Water Split Is Possible

Biga water cannot exceed the total water allowed by overall dough hydration. A high biga share and high biga hydration may create an impossible split.

The calculator stops in that case. Reduce the share, revise hydration, or return to the tested formula.

Treat Yeast as a Measured Input

Biga yeast is calculated from biga flour and the percentage you enter. The tool does not select a yeast rate, type, temperature, or fermentation duration.

Use one named yeast product and a trusted method. Product strength and process conditions affect behavior beyond the arithmetic.

Keep Salt Based on Total Flour

Salt is calculated from total formula flour, even when flour is divided between stages. This keeps the baker percentage reference consistent.

The simple model places salt in the final mix. Follow a documented recipe if your process uses another sequence.

Confirm Both Stage Totals

Add biga flour to final-mix flour and confirm the sum equals total flour. Do the same with biga water and final-mix water.

These checks prove the formula was reallocated rather than duplicated. Save the result with the full recipe.

Biga Calculator Limits

The result does not predict maturity, aroma, gluten development, mixing needs, or bake quality. It is a formula allocation tool.

Record actual time, temperature, flour, yeast product, and readiness observations outside the report.

Choose the Biga Flour Share Deliberately

The flour share controls how much of the formula moves into the biga. The calculator does not label one share as ideal because products and schedules differ.

Begin from a tested formula. Changing the share alters both stages even when total flour and finished hydration stay fixed.

Plan Mixer Capacity Across Two Stages

The prepared biga and final additions must fit the mixer. Compare the total dough with equipment capacity before production.

Keep the prepared biga as a visible ingredient line. This reduces the risk of adding its flour and water again.

Round and Recheck the Operational Formula

Round weights only to the resolution of the available scale. Then add the rounded stage totals and compare them with the original formula.

Small differences are normal, but record them. Repeated undocumented rounding can shift hydration and batch size.

Compare Biga With Poolish Without Mixing the Rules

Poolish is fixed at equal flour and water on its dedicated page. Biga is intentionally stiffer and requires its own hydration input.

Do not move a poolish percentage into this calculator without rebuilding the formula. The two preferments allocate different water amounts.

Account for Preferment Weight in Production

Biga total equals its flour, water, and entered yeast. Weigh that prepared component before combining it with final-mix ingredients.

A missing or partial biga changes the actual dough formula. Record any handling loss instead of silently replacing it with extra flour or water.

Use the Export as a Mixing Checklist

The CSV and copied report separate early-stage and final-stage weights. Keep those lines together with the tested method.

The report is not a schedule. Add mixing order, rest time, temperature, and readiness notes in the production record.

Biga Build Calculator FAQs

Sources and Further Reading

Explore Related Cooking Calculators

Use the Baker Percentage Calculator for a complete formula, or return to the Cooking Calculators hub.