Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
Brix to Specific Gravity Converter (Brewing)
SG ≈ 1 + Brix / (258.6 − (Brix / 258.2) × 227.1) for pre-fermentation wort.
Refractometers speak Brix; hydrometers speak SG. Unfermented wort: SG ≈ 1 + Bx / (258.6 − (Bx/258.2)×227.1). After fermentation alcohol fools a refractometer — use a correction, not this page alone.
Refractometer
Unfermented wort
1.0484
After fermentation, alcohol fools a refractometer.
- Points
- 48.4
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
Brix (°Bx)
The “Brix (°Bx)” value used in this tool’s formula. Adjust it to see results update live.
How this calculator works
Refractometers speak Brix; hydrometers speak SG. Unfermented wort: SG ≈ 1 + Bx / (258.6 − (Bx/258.2)×227.1). After fermentation alcohol fools a refractometer — use a correction, not this page alone. SG ≈ 1 + Brix / (258.6 − (Brix / 258.2) × 227.1) for pre-fermentation wort. Example: 12 °Bx wort → about 1.048 SG. 24 °Bx → about 1.101.
SG ≈ 1 + Brix / (258.6 − (Brix / 258.2) × 227.1) for pre-fermentation wort.
Example: 12 °Bx wort → about 1.048 SG. 24 °Bx → about 1.101.
When to use this Brix to Specific Gravity
Common use cases
- Refractometers speak Brix; hydrometers speak SG. Unfermented wort: SG ≈ 1 + Bx / (258.6 − (Bx/258.2)×227.1). After fermentation alcohol fools a refractometer — use a correction, not this page alone.
- Sanity-check with this case: 12 °Bx wort → about 1.048 SG. 24 °Bx → about 1.101.
- The relationship is: SG ≈ 1 + Brix / (258.6 − (Brix / 258.2) × 227.1) for pre-fermentation wort.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: Brix (°Bx)
- SG ≈ 1 + Brix / (258.6 − (Brix / 258.2) × 227.1) for pre-fermentation wort.
- Example on the page: 12 °Bx wort → about 1.048 SG. 24 °Bx → about 1.101.
How to Convert Brix to Specific Gravity Step-by-Step
- 1Enter Brix (°Bx). Use the values you have, not a catalog average, unless that is all you know.
- 2SG ≈ 1 + Brix / (258.6 − (Brix / 258.2) × 227.1) for pre-fermentation wort.
- 3Worked case: 12 °Bx wort → about 1.048 SG. 24 °Bx → about 1.101.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
SG ≈ 1 + Brix / (258.6 − (Brix / 258.2) × 227.1) for pre-fermentation wort.
12 °Bx wort → about 1.048 SG. 24 °Bx → about 1.101.
Example: set Brix (°Bx) = 12, then read the result.
Variable definitions
- value
Brix (°Bx)
The “Brix (°Bx)” field. Default 12; typical range 0–40.
- The conversion (SG ≈ 1 + Brix / (258.6 − (Brix / 258.2) × 227.1) for pre-fermentation wort.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
Not with an uncorrected refractometer. Take a hydrometer reading.
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Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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