Input
How to use this calculator
Select the gravity scale of the value you have and the scale you need. The converter supports SG, gravity points, Plato and Brix. Use SG values such as 1.050; use points as 50; use Plato or Brix as degrees.
Use the converted value when comparing recipe notes, instrument displays or brewing references that use different conventions. Keep the original value in your notes as well.
How the calculation works
Gravity points are represented as the SG difference from 1.000 multiplied by 1000. Plato and Brix use the project polynomial conversion between dissolved extract and SG. Brix is an optical scale and is not automatically a fermentation-corrected reading.
Example calculation
SG 1.050 converts to 50 gravity points and approximately 12.4 degrees Plato using the implemented conversion. Small differences between references are expected because conversion polynomials are approximations.
Understanding the result
These scales describe related but not identical things. SG is density relative to water; points are a compact brewer notation; Plato and Brix express approximate dissolved extract by mass.
After fermentation, do not infer finished-beer extract from Brix alone. Use the Refractometer tool when alcohol correction is required.
Common mistakes
- Entering 50 when the selected unit is SG.
- Treating Brix as corrected finished-beer gravity.
- Rounding before converting.
- Comparing values from different correction methods without noting the method.
Frequently asked questions
Are Plato and Brix identical?
They are close in common wort ranges, but they originate from different measurement conventions and should not be treated as exact synonyms.
What are gravity points?
Gravity points are the digits after 1.000 expressed as thousandths, so 1.050 is 50 points.
Can this correct fermented refractometer readings?
No. Use the dedicated Refractometer calculator for alcohol correction.
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