Specific gravity to degrees Brix
Type a value in SG to get it in °Bx instantly.
12.39°Bx
That's 1.03× as sweet as fruit juice, while strong beer wort is 1.45× sweeter. Fermented dry, that would give roughly 7.308% ABV.
Convert the other way: °Bx to SG
What it means
How sweet is that?
Refractometer readings drift once fermentation starts, because alcohol bends light differently. Hydrometers stay honest.
The math
How to convert SG to °Bx
Brix and specific gravity relate through a cubic fit: SG ≈ 1 + °Bx ÷ (258.6 − °Bx × 0.88). Potential alcohol is roughly °Bx × 0.59.
Example: 1.05 SG = 12.387 °Bx.
Every unit
Your reading in every unit
Tables
SG to °Bx conversion table
| SG | °Bx |
|---|---|
| 1.01 SG | 2.56051 °Bx |
| 1.02 SG | 5.08125 °Bx |
| 1.03 SG | 7.55852 °Bx |
| 1.04 SG | 9.99341 °Bx |
| 1.05 SG | 12.387 °Bx |
| 1.06 SG | 14.7405 °Bx |
| 1.07 SG | 17.0548 °Bx |
| 1.08 SG | 19.3311 °Bx |
| 1.09 SG | 21.5706 °Bx |
| 1.11 SG | 25.9431 °Bx |
| 1.13 SG | 30.1812 °Bx |
°Bx to SG conversion table
| °Bx | SG |
|---|---|
| 2 °Bx | 1.00779 SG |
| 4 °Bx | 1.01568 SG |
| 6 °Bx | 1.02369 SG |
| 8 °Bx | 1.0318 SG |
| 10 °Bx | 1.04003 SG |
| 12 °Bx | 1.04838 SG |
| 14 °Bx | 1.05684 SG |
| 16 °Bx | 1.06543 SG |
| 18 °Bx | 1.07414 SG |
| 20 °Bx | 1.08298 SG |
| 22 °Bx | 1.09195 SG |
| 25 °Bx | 1.10566 SG |
| 30 °Bx | 1.12919 SG |
Quick answers
Quick answers
- How many °Bx is 1 SG?
- 1 SG is 0 °Bx.
- How many °Bx is 1.05 SG?
- 1.05 SG is 12.387 °Bx.
The units
About these units
Specific gravity (SG)
Density compared with water. Fresh wort might read 1.048.
Degrees Brix (°Bx)
Grams of sugar per 100 grams of liquid, the winemaker’s scale.
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