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How to Calculate ABV from Gravity
Formula
ABV (alcohol by volume) is calculated from the difference between original gravity (before fermentation) and final gravity (after fermentation).
Apparent attenuation measures what percentage of available sugars were fermented. Most ales achieve 70-80% attenuation.
Common use cases:
- Homebrewing ABV calculation
- Wine fermentation tracking
- Hard cider alcohol estimation
Frequently Asked Questions
Maria Gonzalez
Registered Dietitian, RD, MPH
Maria is a Registered Dietitian with a Master's in Public Health. She focuses on evidence-based nutrition assessment tools including BMI, calorie calculations, and body composition analysis.
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