# ABV Calculator

> Calculate alcohol by volume (ABV) from original and final gravity readings. Includes apparent attenuation, ABW, and estimated calories.

**URL:** https://www.calculatoranswers.com/abv-calculator
**Category:** Home

## Quick Answer

Calculate alcohol by volume (ABV) for homebrew. Enter the original gravity (OG) and final gravity (FG) to find the alcohol percentage.

## Definition

An ABV calculator (Alcohol by Volume) is a brewing utility used to determine the percentage of alcohol in a batch of beer, cider, wine, or mead. It calculates alcohol content by comparing gravity measurements taken before and after fermentation: the original gravity (OG), which measures sugar density, and the final gravity (FG), which measures density after yeast converts sugar to alcohol. The calculator applies standard or alternate high-gravity formulas to find the alcohol percentage and estimate apparent attenuation. Homebrewers and commercial brewers use this tool to verify fermentation progress, ensure recipe consistency, and comply with labeling regulations.

## How to Use

1. **Enter original gravity (OG)** — Type the gravity reading taken before fermentation began.
2. **Enter final gravity (FG)** — Input the gravity reading taken after fermentation was completed.
3. **Read the ABV percentage** — View the calculated ABV percentage, estimated apparent attenuation, and the sugar depletion level.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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