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Livestock Calculators

Animal Weight Calculator

Estimated livestock weight from heart girth and body length measurements.

Enter values

Results update as you type.

Result

Estimated weight

448.4 kg

In pounds
988.6
Heart girth
180 cm
Body length
150 cm
Daily feed at 2.5%
11.21 kg
Daily water need
35.9 litres
Accuracy
Typically within 5% of scale weight when measured carefully

About the Animal Weight Calculator

Estimated livestock weight from heart girth and body length measurements.

Also known as: cattle weight tape, estimate cow weight, livestock weight without scales, heart girth weight.

How to use this calculator

  1. Enter animal, heart girth, body length.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

weight (lb) = girth² × length ÷ species constant

Worked example

Using the values pre-filled in the calculator above:

  • Animal: Cattle
  • Heart girth = 180 cm
  • Body length = 150 cm

the calculator returns:

  • Estimated weight: 448.4 kg
  • In pounds: 988.6
  • Heart girth: 180 cm
  • Body length: 150 cm