IBU Calculator

Calculate International Bitterness Units using the Tinseth formula.

Hop Weight (oz)

Alpha Acid (%)

Boil Time (min)

Batch Size (gallons)

Wort Gravity (SG)

Uses the widely-accepted Tinseth method accounting for gravity and boil time.

Shows hop utilization percentage so you can optimize your hop schedule.

Calculate each hop addition separately and sum the IBU values for total bitterness.

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