Milk Fat Standardisation Calculator
Solve a two-stream milk-fat mass balance for a chosen total blend mass and target fat mass fraction.
A QUICK WALKTHROUGH
How to use this tool
- Enter a positive total blend mass in kilograms.
- Enter distinct stream fat mass fractions and a target between them, as kg fat per kg stream.
- Calculate, then copy or download the report.
Formula and units
mA = total mass × (target fraction − fraction B) / (fraction A − fraction B). mB = total mass − mA. Fat mass = mA × fraction A + mB × fraction B. Fractions are kg fat/kg stream, from 0 to 1, not percentages or volume fractions.
Scope
Two-stream mass conservation only, with no losses or reactions. Streams must have distinct fat mass fractions; the target must lie between them, including the endpoints. No volume/density conversion, product specification, processing, nutrition or safety judgment is supplied.
Local processing
Inputs stay in your browser. Copy and TXT export include the inputs, calculation, formula and scope.
Reference
FAO dairy processing reference: standardisation and material balance. The calculator solves mass and fat conservation algebraically. https://www.fao.org/4/t1265e/t1265e.pdf
GOOD TO KNOW
Common questions
Can I enter fat percentage?
Convert percent to a mass fraction first: 4% by mass is 0.04 kg/kg. Volume fractions are not supported.
What if both streams have equal fat fractions?
The split is not uniquely determined by fat conservation, so equal fractions are rejected.