Free Homebrew Tool
ABV & Attenuation
Calculate alcohol by volume, apparent & real attenuation, and calories from your original and final gravity readings.
1) Enter Your Beer Data
Gravity Unit
Beer Style Presets
Tip: take both gravity readings at the same temperature and calibrate your hydrometer.
2) Calculation Results
ABV
—
Alcohol by Volume
Apparent Attenuation
—
% sugars consumed
Real Attenuation
—
% actual fermentation
Calories per 12 oz
—
total calories
Total Alcohol
—
Total Calories
—
ABW
—
Enter OG and FG to see calculations.
FG must be lower than OG.
ABV: alcohol by volume. Apparent attenuation: what your hydrometer reads. Real attenuation: accounts for alcohol's lower density. ABW: alcohol by weight.
