🍺 Homebrewing ABV Calculator
Calculate alcohol by volume, attenuation, and calories from your gravity readings. Supports specific gravity (1.0xx) and Plato (°P).
Gravity Input
SG
SG
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ABV (Standard)
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ABV (Advanced)
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App. Attenuation
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Real Attenuation
Calories/330ml: — kcal
Calories/12oz: — kcal
Style: —
Refractometer Corrector
Refractometers read Brix, but alcohol distorts readings after fermentation. Enter your readings to get the corrected FG.
°Bx
°Bx
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OG (SG)
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Corrected FG
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ABV %
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OG (°P)
Formula used: Corrected FG = 1.0000 – 0.0044993 × ogBrix + 0.011774 × fgBrix + 0.00027581 × ogBrix² – 0.0012717 × fgBrix² – 0.0000072800 × ogBrix³ + 0.000063293 × fgBrix³ (Sean Terrill correction)
Yeast FG Predictor
Enter your OG and yeast's stated attenuation to predict expected final gravity and ABV.
SG
%
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Predicted FG
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Predicted ABV
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FG (°P)
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Style Range
Note: Attenuation is stated as apparent attenuation. Real attenuation is ~20% lower. Temperature, pitch rate, nutrient levels, and fermentable composition all affect actual attenuation.
Common Yeast Strains
| Strain | Type | Attenuation | Character |
|---|---|---|---|
| WY1056 / WLP001 | Ale | 73–77% | Clean, neutral |
| WY1968 / WLP002 | Ale | 64–70% | Malty, English |
| WY3068 / WLP300 | Wheat | 73–77% | Banana/clove |
| WY3787 | Belgian | 74–78% | Spicy, fruity |
| WY2124 / WLP830 | Lager | 73–77% | Clean, crisp |
| EC-1118 | Champagne | 80–85% | Very dry, neutral |
| S-04 | Ale | 71–75% | Fruity, English |
| US-05 | Ale | 73–77% | Clean, versatile |
Beer Style Gravity Reference
| Style | OG (SG) | FG (SG) | ABV % | Attenuation |
|---|---|---|---|---|
| American Lite Lager | 1.028–1.040 | 1.004–1.008 | 2.8–4.2% | 73–82% |
| American Lager | 1.040–1.050 | 1.004–1.010 | 4.2–5.3% | 75–82% |
| Blonde Ale | 1.038–1.054 | 1.008–1.013 | 3.8–5.5% | 70–76% |
| American Pale Ale | 1.045–1.060 | 1.010–1.015 | 4.5–6.2% | 73–80% |
| American IPA | 1.056–1.070 | 1.008–1.014 | 5.5–7.5% | 75–85% |
| Double IPA | 1.065–1.085 | 1.008–1.018 | 7.5–10% | 75–85% |
| English Bitter | 1.032–1.040 | 1.008–1.012 | 3.0–3.8% | 70–76% |
| English ESB | 1.048–1.060 | 1.010–1.016 | 4.6–6.0% | 70–75% |
| Porter | 1.040–1.060 | 1.008–1.016 | 4.0–5.4% | 65–75% |
| Stout (Dry Irish) | 1.036–1.050 | 1.007–1.011 | 4.0–5.0% | 70–78% |
| Imperial Stout | 1.075–1.115 | 1.018–1.030 | 8.0–12% | 65–75% |
| Hefeweizen | 1.044–1.052 | 1.010–1.014 | 4.9–5.6% | 73–78% |
| Belgian Witbier | 1.044–1.052 | 1.008–1.012 | 4.5–5.5% | 74–80% |
| Belgian Saison | 1.048–1.065 | 1.004–1.010 | 5.0–7.0% | 78–88% |
| Belgian Golden Strong | 1.070–1.095 | 1.005–1.016 | 7.5–10.5% | 78–88% |
| Barleywine | 1.080–1.120 | 1.016–1.030 | 8.0–12% | 70–80% |
| Oktoberfest/Märzen | 1.050–1.057 | 1.012–1.016 | 4.8–5.7% | 71–76% |
| Pilsner (Bohemian) | 1.044–1.056 | 1.010–1.015 | 4.2–5.4% | 75–82% |
| Scottish Heavy (70/-) | 1.035–1.040 | 1.010–1.015 | 3.2–3.9% | 60–70% |
| Milk Stout | 1.052–1.066 | 1.020–1.030 | 4.0–6.0% | 55–65% |
ABV Style Ranges: Session (<4.5%) · Standard (4.5–6%) · Strong (6–9%) · Imperial (9%+)