DemijohnGravity scale converter: SG, Brix, Oechsle, Baumé
Type a reading in any scale to see it in the others, with the potential alcohol. The table below works without JavaScript and prints on one page.
Result
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Conversion table
SG 20/20 from 1.000 to 1.130. Potential alcohol: grape or fruit must from OIV Table II, honey must from honey’s sugar content, both at 16.83 g/L per % ABV.
| SG | °Brix | °Oechsle | °Baumé | Potential % (grape) | Potential % (honey) |
|---|---|---|---|---|---|
| 1.000 | 0 | 0 | 0 | – | 0.0 |
| 1.005 | 1.3 | 5 | 0.7 | – | 0.7 |
| 1.010 | 2.6 | 10 | 1.4 | – | 1.4 |
| 1.015 | 3.8 | 15 | 2.1 | – | 2.2 |
| 1.020 | 5.1 | 20 | 2.8 | – | 2.9 |
| 1.025 | 6.3 | 25 | 3.5 | – | 3.6 |
| 1.030 | 7.6 | 30 | 4.2 | – | 4.3 |
| 1.035 | 8.8 | 35 | 4.9 | – | 5.1 |
| 1.040 | 10 | 40 | 5.6 | – | 5.8 |
| 1.045 | 11.2 | 45 | 6.2 | 5.5 | 6.5 |
| 1.050 | 12.4 | 50 | 6.9 | 6.3 | 7.3 |
| 1.055 | 13.6 | 55 | 7.6 | 7.1 | 8.0 |
| 1.060 | 14.7 | 60 | 8.2 | 7.8 | 8.7 |
| 1.065 | 15.9 | 65 | 8.8 | 8.6 | 9.5 |
| 1.070 | 17.1 | 70 | 9.5 | 9.3 | 10.2 |
| 1.075 | 18.2 | 75 | 10.1 | 10.1 | 10.9 |
| 1.080 | 19.3 | 80 | 10.7 | 10.8 | 11.7 |
| 1.085 | 20.5 | 85 | 11.4 | 11.6 | 12.4 |
| 1.090 | 21.6 | 90 | 12 | 12.3 | 13.1 |
| 1.095 | 22.7 | 95 | 12.6 | 13.1 | 13.9 |
| 1.100 | 23.8 | 100 | 13.2 | 13.8 | 14.6 |
| 1.105 | 24.9 | 105 | 13.8 | 14.6 | 15.4 |
| 1.110 | 25.9 | 110 | 14.4 | 15.3 | 16.1 |
| 1.115 | 27 | 115 | 15 | 16.0 | 16.8 |
| 1.120 | 28.1 | 120 | 15.5 | 16.8 | 17.6 |
| 1.125 | 29.1 | 125 | 16.1 | 17.5 | 18.3 |
| 1.130 | 30.2 | 130 | 16.7 | 18.2 | 19.1 |
How it’s worked out
SG and Brix
°Brix = ((182.46007 × SG − 775.68212) × SG + 1262.7794) × SG − 669.56218, a fit to the NBS sugar tables accurate to 0.002 °Bx up to SG 1.179. The reverse is solved exactly. The “gravity points ÷ 4” shortcut is close at 1.040 but 0.67 °Bx too high at 1.080 and 1.9 too high at 1.120.
Plato, Balling and Blg
Plato uses Buhl’s fit to the brewing tables. Brix, Balling (Blg in Poland) and Plato are the same idea, sugar as a percentage of mass, and differ by less than 0.02 between 1.000 and 1.120.
Oechsle, Babo and Baumé
°Oechsle = 1000 × (SG − 1). Babo (KMW, used in Austria and Italy) relates to it as °Oe = KMW × (4.54 + 0.022 × KMW). Baumé is the heavy scale with modulus 145: °Bé = 145 × (1 − 1/SG).
Potential alcohol
Grape must holds non-sugar solids, so the same gravity means less sugar than in a honey or sugar must. The grape column uses OIV Table II (from 1.041; below that the table has no rows). The honey column uses honey’s sugar content.
Sources
- Wikipedia, “Brix”: NBS cubic fit for SG and °Bx, Buhl (2023) fit for °P
- Bates et al., NBS Circular C440 (1942), Tables 109, 110 and 114
- Wikipedia (de), “Grad Oechsle”
- Wikipedia (de), “Klosterneuburger Mostwaage” (Babo relation)
- OIV-MA-AS2-02, Table II: Brix, must density, sugar and potential alcohol
Doses are estimates. Add in steps, test again, follow the product label. For personal use only.
Checked against the sources: October 25, 2026