# Gravity Conversion

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


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