Brew blending gravity calculator

Calculate volume-weighted approximate blended SG and total additive volume with your own figures.

Your numbers

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

Use volume-weighted approximate blended SG and total additive volume to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Liquid volumes at common temperature (L)
10,5
Specific gravities at common reference temperature
1.05,1.01
Volume-weighted approximate blended SG
1.036667
Total additive volume (L)
15

Try another scenario

Liquid volumes at common temperature (L)
11.0,5.0
Specific gravities at common reference temperature
1.05,1.01
Volume-weighted approximate blended SG
1.0375
Total additive volume (L)
16
Calculation method

Calculation method

Volume-weighted approximate blended SG

SGblend=sum volume×SG/sum volume; additive volume approximation.

Total additive volume (L)

SGblend=sum volume×SG/sum volume; additive volume approximation.

Symbols and units
a
Liquid volumes at common temperature (L)
b
Specific gravities at common reference temperature

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

  • Approximate volume additivity; no chemical reaction, contraction or dissolved-gas correction. 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. Approximate volume additivity; no chemical reaction, contraction or dissolved-gas correction.
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