Guide
Understanding Specific Gravity
A practical introduction to gravity readings, hydrometers, temperature correction, and fermentation progress.
Alcohol & ABV
Translate a refractometer reading in degrees Brix into an estimated specific gravity for an unfermented solution.
Convert an approximate sucrose Brix reading to specific gravity.
Good to know
Not by itself. Alcohol changes refractive index; use a validated alcohol-correction method with both original and current readings.
Brix is a sucrose-equivalent refractive measurement. Fruit must contains other dissolved substances, so the relationship is approximate.
Keep exploring
Guide
A practical introduction to gravity readings, hydrometers, temperature correction, and fermentation progress.
Guide
Compare two common ways of describing dissolved extract and learn when a conversion is only an estimate.
Calculator
Estimate alcohol by volume from original and final specific gravity readings.
Calculator
Estimate the water needed to bring a measured alcohol solution to a target strength.
Calculator
Estimate the alcohol potential represented by a starting specific-gravity reading.
Calculator
Convert alcohol by volume to US proof and back.