Free tools
Free dairy calculators. No signup.
These work whether or not you ever become a customer. No email wall, no watermark, no “enter your details to see the result”.
Cattle & buffalo gestation calculator
One service date in. Due date, dry-off date, pregnancy check window and steaming-up date out. Species-aware.
Milk rate calculator
Fat and SNF in, rate per litre and total amount out. Fat-only or fat + SNF models.
Dairy profit calculator
Herd size, yield, milk price and feed cost in. Monthly profit and cost per litre out.
Free Excel record template
A working herd and milk register, if you are not ready for software yet.
These calculators do one animal at a time
Lactra does the whole herd — due lists on your phone, rate charts applied automatically, cost per litre calculated every day.