Calculateur du degré d'Alcool bière

Calculating the alcohol content of your beer is more than a simple curiosity: it is a key step in understanding your brew, checking that fermentation has progressed correctly, and keeping control over your intended style.

A reliable ABV estimate also helps you fine‑tune your recipes, compare different batches, and maintain consistency from one brew to the next. With just a few simple gravity measurements, you can quickly obtain an accurate value for both the alcohol level and the yeast’s attenuation.

Pack mini densimètre et éprouvettevoir les détails

Mini hydrometer and test tube pack

€5.67 €4.54
In stock - Ready to ship
Refractometer 0-18°Plato with ATCvoir les détails

Refractometer 0-18°Plato with ATC

€33.25
In stock - Ready to ship
Refractometer 0-32% Brix + 1.000-1.130 specific gravity with ATCvoir les détails

Refractometer 0-32% Brix + 1.000-1.130 specific gravity with ATC

€24.92
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RAPT connected densimetervoir les détails

RAPT connected densimeter

€57.50 €51.75
In stock - Ready to ship
View our measuring tools


Use our calculation tool:


Input data:

  • Original Gravity: enter the original gravity before pitching the yeast. If the value is expressed as 1.051, enter 51 in the calculator.
  • Final Gravity: enter the final gravity after fermentation. If the value is 1.012, enter 12 in the calculator.


Output data:

  • Alcohol content: this is the alcohol level excluding priming sugar*
  • Attenuation: this is the percentage of gravity points consumed by the yeast

*Important: if you use sugar to carbonate your beers, this adds density points to the beer and increases the final alcohol content.