Frequently Asked Questions
How is alcohol by volume calculated?
Standard formula: ABV = (OG - FG) x 131.25, where OG is original gravity and FG is final gravity. So a beer that goes from 1.050 to 1.010 ends up at 5.25% ABV.
OG vs Brix?
Specific gravity is unitless density vs water. Brix is sugar percent by mass. 1 Brix is roughly 4 gravity points; OG 1.048 is about 12 Brix.
Why is my ABV different from a calculator?
High-ABV beverages (over 6%) need a corrected formula because alcohol's density skews the linear approximation. Use ABV = (76.08 x (OG-FG) / (1.775-OG)) x (FG / 0.794) for accuracy above 8%.
Is ABV the same in the US and EU?
Yes - ABV is defined by volume of pure ethanol over total beverage volume. The US sometimes also uses "proof" which is exactly 2x ABV (80 proof = 40% ABV).
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This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.