Alcohol By Volume (ABV) & Attenuation Calculator
Essential brewing calculator for beer, wine, cider, and mead. Computes Alcohol By Volume (ABV) using both the standard (OG - FG) × 131.25 formula and the advanced Hall & Daniels high-gravity equation. Also determines Alcohol By Weight (ABW), apparent yeast attenuation %, and estimated calories per 12 oz serving.
ABV & Brewing Attenuation Calculator
Calculate Alcohol By Volume (ABV), Alcohol By Weight (ABW), yeast attenuation %, and 12oz calories from Original and Final Gravity.
Hydrometer Readings
How to Use Alcohol By Volume (ABV) & Attenuation Calculator
Enter Original Gravity (OG)
Input the specific gravity reading taken before fermentation (e.g. 1.054).
Enter Final Gravity (FG)
Input the hydrometer reading taken after fermentation ceases (e.g. 1.010).
Read ABV & Attenuation
View your beverage’s alcohol percentage, attenuation efficiency, and calorie count.
Frequently Asked Questions
Related Tools
Percentage Calculator
Calculate percentages, percentage increases, decreases, and percentage differences.
Unit Conversion Calculator
Convert between metric and imperial units for length, mass, volume, temperature, and speed.
Discount & Sale Price Calculator
Calculate final sale prices, discount amounts, and savings with sales tax.
Compound Interest Calculator
Calculate investment growth over time with compound interest and recurring contributions.