Guide
How to Measure Alcohol Content at Home
Learn what hydrometer readings can tell you about fermentation strength, and where common homebrew estimates fall short.
Alcohol & ABV
ABV Calculator
Use corrected hydrometer readings taken before and after fermentation to estimate the alcohol by volume (ABV) of beer, wine, cider, or mead.
Enter your measurements
Estimate alcohol by volume from original and final specific gravity readings.
Good to know
Frequently asked questions
Do I need temperature-corrected readings?
Yes. Hydrometers are calibrated at a stated temperature. Correct readings taken at a different temperature with the instrument maker’s correction table.
Is this result exact?
No. The equation is an estimate and can be less accurate for very strong, very sweet, or unusual fermentations.
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