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food.brewing-abv-calculator Calculator
Calculates beer ABV from original gravity (OG) and final gravity (FG) using the standard formula (OG–FG) × 131.25, and estimates calories per 12 oz serving. Every homebrewer needs this after fermentation — gravity readings are the only way to know actual alcohol content.
Inputs
Original Gravity
Reference formula or conversion factor shown for context.
Final Gravity
Reference formula or conversion factor shown for context.
Style
Age in completed years. Many health and fitness formulas adjust for age.
Results
ABV (%)
Reference formula or conversion factor shown for context.
ABW (%)
Reference formula or conversion factor shown for context.
apparent attenuation
The value at the specified point or condition.
calories per 12 oz
Reference formula or conversion factor shown for context.
ABV = (OG - FG) × 131.25
Reference formula or conversion factor shown for context.
style target ABV
Reference formula or conversion factor shown for context.