All Breeds › Bernese Mountain Dog
Predict your Bernese Mountain Dog's adult weight using veterinary growth data
| Male Adult Weight | 80–115 lbs |
| Female Adult Weight | 70–95 lbs |
| Male Height | 25–27.5 inches |
| Female Height | 23–26 inches |
| Life Expectancy | 7–10 years |
| Size Category | giant |
| AKC Group | Working |
| Full Grown By | ~21 months (90 weeks) |
Enter your puppy's age and current weight for a personalized prediction.
Open CalculatorExpected weight at key ages based on veterinary growth data for giant-sized breeds.
| Age | % Adult Weight | Male Est. | Female Est. |
|---|---|---|---|
| 8 weeks | 12% | ~12 lbs | ~11 lbs |
| 4 months | 35% | ~34 lbs | ~31 lbs |
| 6 months | 59% | ~58 lbs | ~50 lbs |
| 8 months | 82% | ~81 lbs | ~68 lbs |
| 12 months | 94% | ~92 lbs | ~77 lbs |
| 15 months | 99% | ~97 lbs | ~82 lbs |
| 19 months | 100% | ~98 lbs | ~83 lbs |
| Adult | 100% | 80–115 lbs | 70–95 lbs |
Most Bernese Mountain Dogs reach their adult weight by around 21 months (90 weeks).
As a giant-sized breed, your Bernese Mountain Dog reaches adult size by 18-24 months. Larger breeds have a longer growth phase. Feeding a giant-breed-specific puppy food during this period supports proper bone and joint development.
Individual dogs may reach full size slightly earlier or later. Spayed or neutered puppies may also have slightly different growth timelines. Regular vet checkups are the best way to track your Bernese Mountain Dog's progress.
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Because Bernese Mountain Dogs are a giant-sized breed, look for a large/giant breed puppy formula designed for their growth needs. Controlled minerals with added joint support.
Feed puppy-specific food until your Bernese Mountain Dog reaches adult size (around 21 months), then transition to an adult formula over 7–10 days.
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For a giant-sized breed like the Bernese Mountain Dog, a 48-inch crate (fits dogs up to 90+ lbs) is the right adult size. Buy the adult size from the start and use the included divider panel while your puppy is still growing.