Beer Brewing ABV & IBU Calculator
ABV Calculator
Calculate alcohol by volume from gravity readings
IBU Calculator (Tinseth)
Calculate bitterness from hop additions
Beer Color (SRM)
Estimate beer color from grain bill
Formula
ABV = (OG - FG) × 131.25; IBU = (oz × AA% × utilization × 7490) / batch_gallons
Frequently Asked Questions
How do I calculate ABV of my homebrew?
Use the formula: ABV = (Original Gravity - Final Gravity) × 131.25. Take a gravity reading before and after fermentation using a hydrometer or refractometer.
What is IBU in beer?
IBU stands for International Bitterness Units. It measures the bitterness from hops. Light lagers have 5-15 IBU, pale ales 30-50 IBU, and IPAs can be 40-100+ IBU.
What is a good OG for a standard beer?
A standard beer typically has an original gravity between 1.040 and 1.060. This usually results in an ABV of 4-6%. Stronger beers can have an OG of 1.080 or higher.
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