How big will my Saint Bernard get?
An adult Saint Bernard weighs 140 to 180 pounds for males and 120 to 140 pounds for females (63.5 to 81.6 kg for males and 54.4 to 63.5 kg for females), according to the American Kennel Club. Put in your puppy’s age and weight to see where they’re heading.
Saint Bernard puppy weight calculator
Saint Bernard adult weight
| Pounds | Kilograms | |
|---|---|---|
| Male | 140 to 180 pounds | 63.5 to 81.6 kg |
| Female | 120 to 140 pounds | 54.4 to 63.5 kg |
Adult weight from the American Kennel Club’s Saint Bernard breed page, checked 1 October 2026. Individual dogs vary, and a healthy weight for your dog is one for your vet to judge.
How the estimate works
The calculator takes your puppy’s weight, divides it by their age in weeks, and multiplies by 52. It’s a quick guide, not a growth chart: puppies gain fast early on and slow down as they near adult size, so the answer shifts as they grow. That’s why the result is shown next to the breed’s adult weight. If the two disagree, trust the breed’s weight and your vet.
More on the Saint Bernard
- Our Saint Bernard breed guide: temperament, care and training.
- Ask other owners on the forum how their Saint Bernard grew.
- Find a dog trainer near you, ranked by Bark Score with training methods labelled.
- Dog age calculator: your dog’s age in human years.