Bernese Mountain Dog Growth Chart: Puppy Weight by Month

Bernese Mountain Dog puppy weight chart (lb)

Adult weight	2 mo	3 mo	4 mo	5 mo	6 mo	8 mo	10 mo	12 mo	15 mo	18 mo
Male, 80 lb	11	18	27	35	42	53	63	69	75	78
Male, 115 lb	15	26	38	50	60	76	90	99	108	113
Female, 70 lb	9.3	16	23	30	36	47	55	60	66	69
Female, 95 lb	13	21	32	41	49	63	74	82	89	93

Bernese Mountain Dog puppy weight chart (kg)

Adult weight	2 mo	3 mo	4 mo	5 mo	6 mo	8 mo	10 mo	12 mo	15 mo	18 mo
Male, 36 kg	4.8	8.2	12	16	19	24	28	31	34	36
Male, 52 kg	7.0	12	17	23	27	35	41	45	49	51
Female, 32 kg	4.2	7.1	11	14	17	21	25	27	30	31
Female, 43 kg	5.7	9.7	14	19	22	29	34	37	41	42

Typical weights by month. Individual puppies often sit 10–15% above or below these numbers. Last reviewed October 7, 2026.

How big does a Bernese Mountain Dog get?

According to the American Kennel Club's breed profile for the Bernese Mountain Dog, adults weigh: male 80–115 lb; female 70–95 lb. Life expectancy is 7–10 years.

	Weight	Height
Male	80–115 lb	25–27.5 in
Female	70–95 lb	23–26 in

When does a Bernese Mountain Dog stop growing?

Bernese Mountain Dogs grow like other giant-sized dogs: they are close to adult weight at around 18 months. At 6 months a typical Bernese Mountain Dog puppy has reached about 52% of its adult weight.

To estimate your own puppy's adult weight from its current weight and age, use the puppy weight calculator and choose "Giant" as the expected adult size.

How the chart is made

The adult weights come from the AKC breed profile. The weight at each month is estimated with our giant-breed growth curve, which gives the share of adult weight a typical puppy of that size reaches at each age. The curves are simplified from published research on dog growth, including the growth standard charts by Salt and colleagues (PLOS ONE, 2017).

If your puppy is well below or above the chart, stops gaining weight, or looks very thin or round, ask your vet to check its body condition.

Questions people ask

How much should a 3-month-old Bernese Mountain Dog weigh?

Typically about 16–26 lb, depending on sex and how big the dog will be as an adult.

How much should a 6-month-old Bernese Mountain Dog weigh?

Typically about 36–60 lb, roughly 52% of adult weight.

When is a Bernese Mountain Dog full grown?

Most Bernese Mountain Dogs are close to their adult weight at around 18 months, though many keep filling out with muscle for a while after that.

How big will my Bernese Mountain Dog get?

The AKC lists adult weights of male 80–115 lb; female 70–95 lb. Your puppy's parents are a good guide to where in that range it will end up.

Bernese Mountain Dog growth chart