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Bitterness Calculator

This is the Javascript version of the Bitterness Calculator. All you have to do is change any value and click Calculate and the BUs will be calculated. If you want to make multiple additions, simply fill in another line's Alpha Acid Percentage, Mass Added, and Time Boiled fields. The Utilization Percentage, Bittering Units, and Total Bittering Units fields are calculated for you; any entries you make to those fields are ignored. The Bitterness Calculator takes into account both the time of boil and the wort gravity during the boil. The numbers are my own, based partly on data and partly on experience. Your experience and brewing practices may be different than mine.

Wort Specific Gravity (during the boil)

Final Volume (gal)

Hop Addition	Alpha Acid Percentage	Mass Added (oz)	Time Boiled (minutes)	Utilization Percentage	Bittering Units
First
Second
Third
Fourth
Fifth
				Total IBUs
				Calculate