Brew apparent attenuation calculator

Calculate apparent attenuation with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use apparent attenuation to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Original specific gravity
1.05
Final specific gravity
1.01
Apparent attenuation (%)
80

Try another scenario

Original specific gravity
1.1550000000000002
Final specific gravity
1.01
Apparent attenuation (%)
93.548387
Calculation method

Calculation method

Apparent attenuation (%)

Apparent attenuation=100(OG-FG)/(OG-1).

Symbols and units
a
Original specific gravity
b
Final specific gravity

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Apparent gravity convention; not real attenuation or yeast health assessment. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Apparent gravity convention; not real attenuation or yeast health assessment.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Share this page
Share this calculator

Leave unchecked to share the page without your entered values.