Animal Weight Calculator

Estimate animal weight, livestock weight, total herd weight, average daily gain, weight gain, and market value. Use this animal weight calculator for cattle, calves, sheep, goats, pigs, horses, and other livestock using heart girth, body length, starting weight, ending weight, or known average weight.

Calculate Animal Weight

Estimated Weight = Heart Girth² × Body Length ÷ Formula Divisor.
Your result will appear here.

How the animal weight calculator works

Estimate weight:
Enter heart girth, body length, and formula divisor to estimate animal weight from body measurements.

Total herd weight:
The calculator multiplies average animal weight by number of head, then applies shrink if entered.

Average daily gain:
Starting weight, ending weight, and days are used to estimate weight gain per day.

Market value:
Sale weight, price per pound, feed cost, and other costs are used to estimate gross value and net value.

Why use an animal weight calculator?

An animal weight calculator helps estimate livestock weight when scale access is limited.

It can help compare estimated weight, scale weight, shrink, total herd weight, average daily gain, days to target weight, sale value, and feeding cost.

What your result means

Your result shows estimated animal weight, adjusted sale weight, total herd weight, total sale weight, weight gain, average daily gain, days to target weight, gross market value, feed cost, other cost, and net value. These are estimates based on the values you enter.

Animal weight calculator formulas

Frequently asked questions

How do you estimate animal weight without a scale?

Measure heart girth and body length, then use a livestock weight formula. This gives an estimate and should be checked against scale weights when possible.

What is heart girth?

Heart girth is the measurement around the animal’s chest, usually taken just behind the front legs.

How do you calculate average daily gain?

Subtract starting weight from ending weight, then divide by the number of days between weights.

What is shrink in livestock weight?

Shrink is weight loss from handling, hauling, sorting, feed withdrawal, water loss, or stress before weighing or sale.