Milk Fat And SNF Calculator

Work out milk fat and snf instantly with clear inputs, formula shown and shareable results.

About Milk Fat And SNF Calculator

Solids-not-fat is estimated from the corrected lactometer reading and fat percentage using the ISI formula SNF = CLR/4 + 0.21 x fat + 0.36. Total solids is SNF plus fat. Converting percentages to kilograms through volume and density gives the payable solids in a consignment.

Formulas

SNF from lactometer

SNF % = CLR / 4 + 0.21 x fat % + 0.36

Total solids

TS % = SNF % + fat %; solids mass = volume x density x % / 100

Worked example

With the default values below, Milk Fat And SNF Calculator returns Solids-Not-Fat of 8.242%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Corrected Lactometer Readingaccepts 10–40: 28
Fat Percentageaccepts 0.1–15 %: 4.2 %
Milk Volumeminimum 0 L: 100 L
Milk Densityaccepts 1–1.1 kg/L: 1.03 kg/L

Results

Solids-Not-Fat: 8.242%
Total Solids: 12.442%
Fat In The Consignment: 4.326
SNF In The Consignment: 8.489

Step by step

1Values used
2SNF from lactometer
3Total solids
4Solids-Not-Fat= 8.242
5Total Solids= 12.442
6Fat In The Consignment= 4.326
7SNF In The Consignment= 8.489

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Milk composition standards are legally defined. Persistent low SNF or fat may indicate adulteration and should be confirmed by an accredited laboratory before any commercial action.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Milk composition standards are legally defined. Persistent low SNF or fat may indicate adulteration and should be confirmed by an accredited laboratory before any commercial action.

Frequently Asked Questions

What is a corrected lactometer reading?

The lactometer reading adjusted to the calibration temperature, usually 27 C, by adding 0.2 per degree above and subtracting 0.2 per degree below.

What SNF should buffalo and cow milk show?

Cow milk typically 8.3-8.7% SNF with 3.5-4.5% fat; buffalo milk 9.0-9.5% SNF with 6-8% fat. SNF below the legal standard suggests added water.