Gravity Conversion

Convert between Specific Gravity, Plato, Brix, and other gravity measurement units.

The Gravity Conversion tool converts between different gravity measurement scales: Specific Gravity (SG), Specific Gravity Points (SGP), Plato (°P), and Brix (°Bx).

How to Use

1. Enter a value in any gravity unit field

2. View instant conversions - All other units update automatically

3. The tool remembers your last entered value

Gravity Units

Specific Gravity (SG)

• Density relative to water (1.000)

• Most common in homebrewing

• Range: 1.000-1.120+ for beer

• Direct hydrometer reading

Specific Gravity Points (SGP)

• The decimal portion of SG expressed as a whole number

• 1.050 SG = 50 SGP

• Easier for quick mental calculations

• Common in homebrewing shorthand

Plato (°P)

• Weight percentage of extract

• Professional brewing standard

• 1°P ≈ 1.004 SG

• More linear than SG

Brix (°Bx)

• Similar to Plato

• Refractometer scale

• Used in wine/beer making

• Affected by alcohol presence

Common Conversions

Original Gravity Examples

• 1.040 SG = 10°P = 10 Brix

• 1.048 SG = 12°P = 12 Brix

• 1.056 SG = 14°P = 14 Brix

• 1.080 SG = 19.3°P = 19.3 Brix

Final Gravity Examples

• 1.008 SG = 2°P

• 1.010 SG = 2.5°P

• 1.012 SG = 3°P

• 1.016 SG = 4°P

Practical Applications

Recipe Formulation

• Convert between regional standards

• Understand professional recipes

• Calculate extract yields

Process Monitoring

• Track fermentation progress

• Calculate attenuation

• Determine alcohol content

Equipment Compatibility

• Hydrometer reads SG

• Refractometer reads Brix

• Convert for consistency

Gravity Ranges by Style

Light Beers

• OG: 1.028-1.040 (7-10°P)

• FG: 1.004-1.010 (1-2.5°P)

Standard Strength

• OG: 1.040-1.055 (10-13.5°P)

• FG: 1.008-1.014 (2-3.5°P)

Strong Beers

• OG: 1.055-1.075 (13.5-18°P)

• FG: 1.012-1.020 (3-5°P)

Very Strong

• OG: 1.075-1.120+ (18-28°P)

• FG: 1.016-1.030 (4-7.5°P)

Using with Refractometers

Pre-Fermentation

• Direct Brix to SG conversion

• No alcohol correction needed

• Most accurate use

During Fermentation

• Alcohol affects reading

• Requires OG for correction

• Use refractometer calculator

Professional vs Homebrew

Professional (Plato)

• Industry standard

• Linear calculations

• Extract percentages

• Easier math

Homebrew (SG)

• Traditional method

• Hydrometer based

• Points system

• Wide adoption

Calculation Tips

Points System

• Drop the "1." from SG

• 1.050 = 50 points

• Easier for calculations

• Common in homebrewing

Extract Yield

• Points per pound per gallon

• Calculate efficiency

• Recipe formulation

• Consistency tracking

Common Mistakes

Unit Confusion

• Mixing SG and Plato

• Wrong refractometer scale

• Incorrect conversions

Measurement Errors

• Temperature effects

• Calibration issues

• Reading techniques

Using with Your Brewing

Recipe Design

• Convert between different recipe formats

• Check against style guidelines

• Calculate efficiency using your preferred scale

Batch Tracking

• Convert readings from different instruments

• Track fermentation progress

• Calculate attenuation accurately

Quick Reference Table

SG	Plato	Brix
1.030	7.5	7.5
1.040	10.0	10.0
1.050	12.4	12.4
1.060	14.7	14.7
1.070	17.0	17.0
1.080	19.3	19.3

Tips

• Use consistent units throughout your brewing

• Temperature correct all readings

• Document which scale you're using