SNF Calculator (from CLR & FAT)
Enter the lactometer reading (CLR) and FAT to get the milk's SNF percentage and total solids instantly, with a quick check against the FSSAI cow-milk minimum.
The compliance check uses the common FSSAI cow-milk minimum (FAT 3.2%, SNF 8.3%); buffalo and mixed milk have higher standards — confirm the exact standard for your milk with your authority. Everything runs in your browser; nothing is stored or sent.
How SNF is calculated
SNF (Solids-Not-Fat) is estimated from the density of the milk — measured as the Corrected Lactometer Reading (CLR) — together with the FAT:
Example: a CLR of 28 with 4.0% FAT gives (28 ÷ 4) + (0.25 × 4.0) + 0.44 = 7 + 1 + 0.44 = 8.44% SNF. The constant (0.44) can vary slightly by region and standard, so use the version your union follows.
For the full picture on milk quality and pricing, read how milk rate is calculated from FAT and SNF, and use the Milk Rate Calculator to turn quality into a rate.
Frequently asked questions
How do you calculate SNF from CLR and FAT?
SNF% = (CLR ÷ 4) + (0.25 × FAT%) + 0.44, where CLR is the Corrected Lactometer Reading.
What is CLR in milk testing?
The Corrected Lactometer Reading — the lactometer reading adjusted to the standard temperature. It reflects milk density and is used with FAT to estimate SNF.
What is the minimum SNF for cow milk?
The common FSSAI minimum is around 8.3% SNF with 3.2% FAT. Buffalo milk is higher. Confirm the current standard with your authority.
Capture quality automatically at collection
Mobile Dairy records FAT, SNF and CLR for every farmer — try it free for 7 days.
