Conversor de Fermento

Equivalência entre fermento seco ativo, instantâneo e fresco.
Created by
Renato Passos, Eng. de Software
Reviewed by
Renato Passos, Eng. de Software

Last updated: Apr 18, 2026

Seco ativo (cc)
1,00
Instantâneo (cc)
0,75
Fresco (cc)
3,00

Formula

seco ativo : instantâneo : fresco = 1 : 0,75 : 3

About this calculator

The Yeast Converter is a practical tool for those who cook or bake breads, cakes, and pizzas. It converts quantities between the three most common types of biological yeast: active dry, instant, and fresh. The conversion follows the standard ratio of 1 part active dry yeast to 0.75 parts instant to 3 parts fresh. This means that if a recipe calls for 10g of active dry yeast, you can use 7.5g of instant or 30g of fresh.

The tool works simply: you enter the amount of one yeast type and select the source and target types. The calculation is automatic, based on the mentioned ratio. For example, to convert 10g of active dry yeast to fresh, the result will be 30g. The calculator only considers weight equivalence, without accounting for differences in hydration or usage method, which may vary by recipe.

Use this converter whenever you need to substitute one yeast for another in baking recipes. It is useful when you only have one type at home or prefer a specific format. It also helps adjust recipes from foreign books that may use different yeasts. Keep in mind that texture and flavor may slightly change, but the ratio ensures proper dough rising.

Cautions: the conversion is an estimate; results may vary by yeast brand and storage conditions. Fresh yeast has a shorter shelf life and must be refrigerated. When using dry yeast, activate it in warm water before adding to the dough, unless the recipe states otherwise. Always check the expiration date and appearance of the yeast before use.

Frequently asked questions

Can I substitute active dry yeast with instant yeast in the same amount?

No, the ratio is 1 part active dry to 0.75 parts instant. For example, 10g of active dry equals 7.5g of instant.

Does fresh yeast need to be activated before use?

Yes, fresh yeast is usually dissolved in warm water with a little sugar to activate before mixing with flour.

Does the conversion work for any bread recipe?

Yes, the ratio is standard for substitutions, but fermentation time may vary. Fresh yeast tends to act faster than dry.

How long does fresh yeast last compared to dry yeast?

Fresh yeast lasts about 2 weeks in the refrigerator, while dry yeast can last months in a cool, dry place.

If a recipe calls for active dry yeast and I only have instant, should I change the preparation method?

Yes, instant yeast can be mixed directly with flour without prior activation, unlike active dry which needs to be hydrated.

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