ABV Calculator & Homebrew Gravity Tool

ABV Calculator & Homebrew Gravity Tool

Calculate ABV and alcohol by volume from Original Gravity (OG) and Final Gravity (FG). Supports refractometer Brix correction, apparent attenuation, and calories.

Load Example

Sec controls

1.062
15.2 Unit plato
1.011
2.8 Unit plato
Lbl sample temp:68 °F
Lbl calib temp:

Sec dashboard

Lbl standard abv
6.70%
5.26% Lbl abw abbr
Lbl apparent attenuation
81.2%
High Attenuation
Lbl serving calories
206Unit kcal
12 Unit fl oz (1.3 Unit drinks)
Lbl real extract
5.3Unit plato
Sweet balanced
Sec visual fermenterΔ 51 Lbl gravity points
Liquid meniscus (1.012)81.2%High Attenuation60%78%95%
Lbl equation type
Opt standard linear6.70%
Opt high gravity hall6.95%
Lbl formula delta0.25%
Lbl attenuation zone
Lbl apparent attenuation81.2%
Lbl real attenuation65.9%
Lbl sweetness profileSweet balanced

Disclaimer text

Primary Metric6.70%
Efficiency / Capacity81.2%
Net Output206 Unit kcal

Client-Side Processing

High-performance calculation executed entirely in browser memory.

Zero Server Upload Privacy

All payloads remain strictly local with zero external server communication.

Production Ready Export

Clean, optimized output formats ready for immediate deployment.

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