Refractometer Correction Calculator

Refractometer Correction | Brülosophy

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Refractometer Correction

Enter pre- and post-fermentation °Bx from a refractometer to get accurate OG and FG readings without using a hydrometer.

Brix Readings

Original and final readings straight off your refractometer — no need to correct anything yourself first. Both get adjusted for your wort correction factor (refractometers are calibrated for pure sugar, not wort), and the final reading gets an additional correction for alcohol, which a raw reading can't account for.

°Bx before fermentation
°Bx after fermentation
default 1.040
Corrected OG
—°Bx
Corrected FG
—°Bx
Alcohol by Volume
%
apparent attenuation
real attenuation

SG ↔ Brix Converter

=
Correction per Sean Terrill's linear refractometer correlation (validated for OG 1.036–1.106, FG 1.007–1.022, 73–91% attenuation). ABV via George Fix's formula. SG↔Brix conversion per the standard ASBC-derived polynomial.  ·  brulosophy.com
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