Refractometer / Brix / SG Calculator

Convert Brix and SG and correct post-fermentation refractometer readings to estimate true final gravity and ABV.

After-fermentation correction

Corrected FG

1.011

Estimated ABV

6.30%

Estimated OG (from Brix)

1.059

Quick conversion result: 12.39 Brix / Plato

Formula references

This page uses the Sean Terrill refractometer correction polynomial for post-fermentation FG estimation. ABV is then estimated using(OG − corrected FG) × 131.25.