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ABV Calculator

Calculate alcohol by volume from original and final gravity readings for beer, wine, and mead.

Inputs

Specific gravity before fermentation

Specific gravity after fermentation

Results

ABV

5.25%

0–3
Non-alc
3–5
Session
5–8
Standard
8–12
Strong
12–16
Wine
16–20
Barleywine
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Tips

1
Take your OG reading before pitching yeast, and FG after fermentation is fully complete
2
For high-gravity beers (OG > 1.070), the alternate formula ABV = (76.08 × (OG-FG) / (1.775-OG)) × (FG/0.794) is more accurate

Open formula

ABV = (OG - FG) × 131.25

Standard ABV formula using the difference between original and final gravity.

Standard brewing calculation (BJCP)

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