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Beer Brewing

IBU Calculator

Estimate an International Bitterness Unit value with a simple mass-balance formula. Actual bitterness depends on boil gravity, time, hop form, and process losses.

Enter your measurements

Estimate bitterness from hop mass, alpha acids, utilization, and wort volume.

g
Enter a value in g.
%
Enter a value in %.
%
Enter a value in %.
L
Enter a value in L.

Good to know

Frequently asked questions

Does this replace a full hop model?

No. It is a transparent estimate and omits boil-time, wort-gravity, hop-form, and equipment-specific corrections.

Can perceived bitterness match the IBU?

Not necessarily. Sweetness, malt, carbonation, and water chemistry change perceived bitterness.

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