Alcohol Percentage Calculator

The Alcohol Percentage Calculator allows users to determine the alcohol by volume (ABV), apparent attenuation, and original extract (Plato) of their brew using various calculation methods based on initial and final gravity inputs.

Use Our Alcohol Percentage Calculator

How to Use the Alcohol Percentage Calculator

This guide will walk you through the steps to calculate the Alcohol By Volume (ABV), Apparent Attenuation, and Original Extract (Plato) using the Alcohol Percentage Calculator. Follow the instructions below to ensure accurate results.

Step 1: Gather Required Information

Before using the calculator, ensure you have the following information ready:

  • Initial/Original Gravity (OG): This is the density of the wort before fermentation.
  • Final Gravity (FG): This is the density of the beer after fermentation.

Step 2: Enter Initial/Original Gravity (OG)

Input the Initial (Original) Gravity into the designated field. This value should be between 1.0 and 1.2. It is crucial that you enter a valid numerical value within this range to proceed.

Step 3: Enter Final Gravity (FG)

Input the Final Gravity into the corresponding field. The acceptable range for FG is 0.99 to 1.2. Ensure the value is entered correctly for accurate calculations.

Step 4: Select Calculation Method

Choose a Calculation Method from the following options:

  • Standard Method
  • Alternative Method
  • Refined Method

This selection will determine the formula used to calculate the ABV. Make sure to select the method that best fits your needs.

Step 5: Review Results

Once all inputs are entered correctly, the calculator will display the results below:

  • Alcohol By Volume (ABV): Displayed as a percentage with one decimal place. Calculated based on your selected method.
  • Apparent Attenuation: Displayed as a percentage with one decimal place, indicating the percentage of sugars converted to alcohol.
  • Original Extract (Plato): Displayed as a number with one decimal place followed by the symbol °P, indicating the original concentration of extract in the wort.

Ensure all values reflect your input data accurately.

Conclusion

By following the steps outlined above, you can accurately use the Alcohol Percentage Calculator to determine key brewing metrics. Always double-check your inputs to ensure the reliability of your results.