# Brix to Gravity Converter

Brix and degrees Plato measure dissolved sugar as a percentage of solution weight, while specific gravity compares solution density to water. The conversion between them is a cubic polynomial: °P = −676.0 + 1286.4 × SG − 800.4 × SG² + 190.74 × SG³. For quick mental math, gravity points divided by four approximates degrees Plato.

For wort with no alcohol in it. Once fermentation has started, use the refractometer correction calculator instead.

HTML version: https://brewgravity.com/calculators/brix-to-gravity/

## Inputs

- **Convert** (Brix / Plato → specific gravity / Specific gravity → Brix / Plato) — default: brix
- **Brix / Plato (°)** (min 0, step 0.1) — default: 13.5
- **Specific gravity** (min 1, step 0.001) — default: 1.055

## Outputs

- **sgOut**: Specific gravity
- **brixOut**: Brix / Plato
- **points**: Gravity points

## FAQ

### Is Brix the same as Plato?

Close enough for brewing. Both measure dissolved solids as a percentage by weight; they are defined against slightly different reference sugars, and the difference is smaller than the error in reading the instrument.

### Can I use this during fermentation?

No. Once alcohol is present a refractometer reading needs correcting — use the refractometer calculator. A hydrometer reading can be converted directly with this page at any stage.

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Source: https://brewgravity.com — Free converter between Brix, degrees Plato and specific gravity with the cubic conversion polynomial and a reference table.