Border Collie Growth Chart. Border Collie Weight Calculator.

Male Border Collies are about the same size as Female Border Collies. The average size of a male Border Collie is 35 pounds (16 kg) while the average size of a female Border Collie is 35 pounds (16 kg).

In general, male dogs are usually bigger than female dogs. However, in the case of a Border Collie, both the male and the female are about the same size.