Price of milk from fat % and SNF %, by rate per kg fat and SNF or by a rate chart
Estimates only, not financial advice. What you type stays on your device. Checked against sources on 30 Oct 2026.A dairy society pays for the fat and SNF in the milk. At ₹520 per kg of fat and ₹350 per kg of SNF, 10 litres of milk with 6.5% fat and 9.0% SNF, weighing 10.3 kg, holds 0.67 kg fat and 0.93 kg SNF and is worth ₹672.59.
Rates and rules read from BIS IS 10083:1982 (SNF from lactometer reading and fat) on 30 Oct 2026; they may have changed since.
Under "SNF", choose "I have the SNF %" or "From lactometer (CLR)", and enter the "Fat" %.
Enter the "Milk" quantity and choose Litres or Kg under "Milk measured in".
Under "Society pays by", choose "Rate per kg fat and SNF" or "Rate chart" and enter the figures from your society’s rate list.
Read the "Amount" with its price per litre and per kg, then press "Share result" to copy a link.
Dairy cooperatives in India do not pay one flat price for milk. They test each sample for fat and SNF (solids-not-fat: protein, lactose and minerals) and pay for what the milk contains. This calculator works out that payment from your test results and your society's rates.
Two ways societies price milk. Under two-axis pricing, the society fixes a rate per kg of fat and a rate per kg of SNF. The calculator finds the kilograms of each in your milk and multiplies. Under a rate chart, the society fixes a base price per litre or per kg at a standard fat and SNF, and adds or cuts a set amount for each 0.1% above or below. Choose the one on your society's slip and enter its figures; the numbers shown are examples.
SNF from the lactometer. Many collection centres read SNF from a lactometer instead of a machine. The Indian Standard IS 10083, as amended in 1992, gives SNF = CLR ÷ 4 + 0.25 × fat + 0.44, where CLR is the lactometer reading corrected to 27°C. Some unions use a different last figure, so it can be changed. The standard itself calls this an estimate for routine use.
Litres or kilograms. Rates per kg of fat work on the weight of milk. If you measure in litres, the calculator multiplies by the density, 1.030 kg per litre unless you change it. A lactometer reading of 30 means a density of about 1.030.
What the calculator does not do. It does not know your union's rate chart, correct a lactometer reading for temperature, or add incentives, bonuses and deductions for cattle feed or loans. Readings are applied in proportion, so 6.85% fat counts as 3.5 steps above 6.5%.
Find the kilograms of fat and SNF in the milk by multiplying the weight of milk by each percentage. Multiply each by the society's rate per kg and add. For 10.3 kg of milk at 6.5% fat and 9% SNF, with ₹520 and ₹350 per kg, that is ₹348.14 plus ₹324.45, or ₹672.59.
The Indian Standard IS 10083, amended in 1992, gives SNF = CLR ÷ 4 + 0.25 × fat + 0.44. CLR is the lactometer reading corrected to 27°C. With a CLR of 28 and 4% fat, SNF is 7 + 1 + 0.44, which is 8.44%. Some unions use a different constant in place of 0.44.
The chart sets a base price at a standard fat and SNF, for example ₹54 per litre at 6.5% fat and 9.0% SNF. Each 0.1% of fat above the standard adds a fixed sum, and each 0.1% below takes it off; SNF works the same way. Enter the base and the two steps from your society's chart.
A litre of milk weighs slightly more than one kilogram, because milk is denser than water. The calculator uses 1.030 kg per litre unless you change it. The lactometer reading gives the figure directly: density is about 1 plus the reading divided by 1,000, so a reading of 30 means about 1.030.
Not quite. IS 10083 itself says the lactometer method is for routine use and gives an estimate close to the laboratory (gravimetric) method, not a precise figure. Temperature matters too: the reading must be corrected to 27°C before it goes into the formula, using the table in the standard or the chart at the collection centre.
Societies may deduct for cattle feed, loans, insurance or share capital, or pay a separate bonus later. Some round fat and SNF readings to one decimal or pay only for full 0.1% steps. The calculator shows the milk value from the rates entered, before any of these adjustments.
Rates and rules change; check the source before you rely on a figure.
Still stuck? Ask about Milk Fat SNF Rate Calculator and anybody who knows can answer. No account needed.
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