Bernese Mountain Dog Growth Chart & Puppy Weight by Month
Adult Bernese Mountain Dogs weigh 70–115 lb on the AKC breed weight chart. Enter your puppy’s age and weight to see where in that range they’re likely to land.
Bernese Mountain Dog puppy weight chart
- Adult weight (AKC)
- 70–115 lb · 32–52 kg
- Size class
- Large (57–99 lb)
- Weight at 1 year, typical curve
- about 99% of adult
- Life expectancy, size class
- 11.51 years (Montoya 2023)
| Age | Range (lb) | Range (kg) | Typical |
|---|---|---|---|
| 8 weeks | 13–23 lb | 5.9–10.4 kg | 17.7 lb |
| 10 weeks | 18–32 lb | 8.0–14.7 kg | 24.5 lb |
| 12 weeks | 23–42 lb | 10.2–19.3 kg | 31.7 lb |
| 16 weeks | 33–62 lb | 15–28 kg | 46.2 lb |
| 20 weeks | 42–79 lb | 19–36 kg | 59 lb |
| 26 weeks | 53–96 lb | 24–43 kg | 73.2 lb |
| 39 weeks | 65–111 lb | 29–50 kg | 87.4 lb |
| 1 year | 68–114 lb | 31–52 kg | 91.2 lb |
Check your own puppy
Expected adult weight
Enter age and weight to see the range.
Not veterinary advice. PupRange gives estimates from published veterinary sources. Every dog is different. If you’re worried, call your veterinarian.
When to call your vet
- Body condition is 3 or lower, or 7 or higher, on the 9-point chart.
- Weight drops, or stays the same across two weigh-ins while your puppy should still be growing.
- Your puppy seems unwell: not eating, vomiting, diarrhea or low energy.
How the Bernese Mountain Dog chart reads
The Bernese Mountain Dog was #20 in the AKC’s 2025 popularity ranking. Of the 9 breeds with a fitted chart on this site, the Bernese Mountain Dog has the heaviest top weight.
From 70 lb to 115 lb, the top of the range is 64% above the bottom, so two adults inside the AKC range can differ by 45 lb. The range crosses the 99 lb line between our large and giant classes. We use the large curve because the middle of the range falls there.
On the typical large curve, a puppy has about 50% of its adult weight at 16 weeks, 79% at 26 weeks and 99% at 1 year. For a Bernese Mountain Dog, that puts the 16-week band at 33–62 lb and the 26-week band at 53–96 lb. Our large curves reach 99% of adult weight at 50 weeks for an early maturing puppy, 55 weeks for a typical one and 60 weeks for a late one.
Montoya et al. (2023) estimated a life expectancy at birth of 11.51 years for purebred large dogs, against 12.69 years across all dogs in their data. That is a figure for the size class, not for Bernese Mountain Dogs specifically.
Our large curve is derived from a study that followed puppies of four large breeds, Labradors and Newfoundlands among them (Trangerud et al. 2007).
How it’s calculated
The table starts from the AKC adult range. At each age, the low end is the bottom of the range times the share of adult weight a late maturing large puppy has, and the high end is the top of the range times the share for an early maturing one. The calculator on this page works the other way round: it starts from your puppy’s weight today.
Mixed breed or not sure of the breed? The puppy size calculator works from a size class or “Not sure” instead. Every step, source and open question is on our methodology page.
Sources
- American Kennel Club. AKC Breed Weight Chart Checked
- American Kennel Club. AKC, Most Popular Dog Breeds of 2025 Checked
- Montoya M, Morrison JA, Arrignon F, Spofford N, Charles H, Hours M-A, Biourge V. Life expectancy tables for dogs and cats derived from clinical data. Front Vet Sci 2023;10:1082102, Table 2 Checked
- Trangerud C, Grøndalen J, Indrebø A, Tverdal A, Ropstad E, Moe L. A longitudinal study on growth and growth variables in dogs of four large breeds raised in domestic environments. J Anim Sci 2007;85:76–83 Checked
Questions owners ask
How big will a Bernese Mountain Dog puppy get?
The AKC lists adult Bernese Mountain Dogs at 70–115 lb (32–52 kg). Enter your puppy’s age and weight in the calculator on this page to see where in that range they’re heading.
How much does a Bernese Mountain Dog puppy weigh at 3 months?
Our band for 12 weeks runs 23–42 lb (10.2–19.3 kg), from a late to an early maturing puppy. At 6 months (26 weeks) it is 53–96 lb. These are estimates from the adult range and growth curves, not targets.
Charts for breeds of a similar size
Guides
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How big will my puppy get?
How big will your puppy get? We test the common online rules against growth curves by size and show when each one over- or underestimates.
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How much exercise does a puppy need?
The 5-minutes-per-month puppy exercise rule has no study behind it. What the research and vet sources do say, with jogging ages by size.
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When do puppies stop growing?
Small dogs finish growing near their first birthday, giants closer to two. Ages by size class, why weight keeps rising after height stops, and when to worry.
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When to switch a puppy to adult food
When to switch a puppy to adult food by size, where vet and breed sources disagree, what the label must say for big dogs, and a one-week switch plan.