Beer Calculator

Step-by-Step Guide to Using the Beer Calculator

Step 1: Understanding the Calculator’s Purpose

The Beer Calculator is designed to help home brewers estimate various important aspects of their brewing process, including Alcohol By Volume (ABV), total grain needed, and calories per serving. To achieve accurate results, each input must be entered carefully.

Step 2: Entering Batch Size

• Locate the Batch Size (Liters) input field.
• Input the desired amount of beer you plan to brew, in liters.
• Ensure the batch size is between 1 and 1000 liters and adjust the value by increments of 0.1 if necessary.

Step 3: Specifying the Original Gravity (OG)

• Find the Original Gravity (OG) input field.
• Input the OG value, a measure of the wort’s density before fermentation begins. Typical values range between 1.0 and 1.2.
• Use increments of 0.001 to refine your input if needed.

Step 4: Specifying the Final Gravity (FG)

• Locate the Final Gravity (FG) input field.
• Input the FG value, which is the density of the wort after fermentation. This should be between 0.99 and 1.2.
• Adjust your input with increments of 0.001 for accuracy.

Step 5: Selecting Fermentation Temperature

• Navigate to the Fermentation Temperature dropdown menu.
• Choose either Ale (15-22°C) or Lager (7-13°C) depending on your brewing requirements.

Step 6: Entering Mash Efficiency

• Find the Mash Efficiency (%) input field.
• Input the efficiency percentage of your mash process, which should be between 1% and 100%.
• Adjust using increments of 1% to fit your specific brewing process.

Step 7: Obtaining Results

Once all input fields are filled out correctly, the calculator will automatically provide you with the final results. These include:

• Alcohol By Volume (ABV): Calculated using the logic ((originalGravity - finalGravity) * 131.25), this will give you the ABV as a percentage with one decimal accuracy.
• Apparent Attenuation: The percentage calculated by ((originalGravity - finalGravity) / (originalGravity - 1)) * 100, displayed with one decimal point precision.
• Total Grain Needed: Determine how much grain you need, calculated by (batchSize * (originalGravity - 1) * 1000) / (mashEfficiency / 100), and provided in kilograms to two decimal places.
• Calories per 100ml: The calorie content of your beer per 100ml, calculated using ((6.9 * alcoholByVolume) + 4 * (finalGravity * 1000 - 1000) / 4) * 2.5, shown in whole kcal.
• Final Beer Volume: The final quantity of beer after fermentation, calculated as batchSize * 0.96, displayed in liters to one decimal.

Review these results to ensure they meet your brewing expectations. Adjust input as necessary to fine-tune your brewing process.