Alcohol & ABV

SG to Plato Converter

Convert specific gravity to degrees Plato using a standard polynomial approximation for wort and must measurements.

Enter your measurements

Convert specific gravity to an approximate degrees Plato extract reading.

Good to know

What does Plato measure?

Degrees Plato estimates extract by mass in an original sucrose solution; wort is a mixture, so it remains an approximation.

Can I use a fermented beer gravity?

The conversion maps density to an equivalent extract reading; it does not correct for alcohol in fermented beer.

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.