Bernese Mountain Dog Size & Weight: How Big Do They Get?

By the Riverside Berner Guide editorial team
Last updated November 7, 2026

Bernese Mountain Dog size comes down to two sets of numbers. The American Kennel Club (AKC) breed standard puts males at 25 to 27½ inches tall at the withers and females at 23 to 26 inches. The Bernese Mountain Dog Club of America (BMDCA) says males generally weigh 80 to 115 pounds and females 70 to 95 pounds.

That makes a Berner a large, heavy dog by any measure. Below, you’ll see where those figures come from, what they leave out, and what living with a dog this size really means.

Bernese Mountain Dog size at a glance

Here are the official figures in one place. The height comes from the AKC standard, which is the written description judges use. The weight comes from the BMDCA, the breed’s national club in the US.

The BMDCA repeats the same height and weight figures in its About Bernese Mountain Dogs sheet. Both club sheets describe the breed as large and sturdy.

How tall is a Bernese Mountain Dog?

Height is measured at the withers, the highest point of the shoulders, not the top of the head. That’s how the AKC standards for both the Bernese and its cousin, the Greater Swiss Mountain Dog, describe it.

The two height ranges overlap. A female at the top of her range (26 inches) stands taller than a male at the bottom of his (25 inches). So you can’t always tell a male from a female by height alone.

Built a little longer than tall

The standard says a Berner looks square but is slightly longer in body than tall. It calls sturdy bone very important and describes the body as full.

Is height a fault in the show ring?

The standard’s only disqualifications are blue eye color and any ground color other than black. Height isn’t on that list. If you’re buying a family pet, a dog an inch outside the range is still a Berner.

Bernese Mountain Dog weight

The AKC standard doesn’t give a weight at all. The BMDCA fills the gap with ranges: males generally weigh 80 to 115 pounds and females 70 to 95 pounds, according to its FAQ.

Is there an average Bernese Mountain Dog weight?

Not one we could source. Neither the AKC nor the BMDCA publishes an average, only ranges, so we don’t give one. Be careful with any single “average” figure you see online without a named source.

Condition matters more than the number

A Berner at the low end of the range can be healthy, and one at the top can be overweight. Cornell’s Riney Canine Health Center says a dog at a healthy weight has a waist you can see from the side and from above. It advises keeping a healthy weight throughout life.

Extra weight is more than a looks issue in a big breed. Cornell says overfeeding and fast growth in puppies can make hip dysplasia worse in dogs already prone to it. Read more in our guide to hip and elbow dysplasia in Bernese, and ask your vet whether your dog is at a healthy weight.

How much does a dog this size eat?

Less than you might guess, in some cases. The BMDCA’s FAQ says some Berners eat surprisingly little for their size, while others need more than the suggested amount. On average, it says, an adult needs about four cups of a premium dog food a day, though every dog is different.

Male vs female size

The ranges above show the gap: up to 115 pounds for males and up to 95 for females, by the BMDCA’s figures. Males also stand up to 1½ inches taller at the top of the AKC range.

The standard says males should look masculine and females distinctly feminine. If you’re weighing that choice, see male vs female Bernese Mountain Dogs.

How big do Bernese Mountain Dogs get, and when?

The adult figures above are where your puppy is headed. How fast it gets there is harder to pin down. The BMDCA’s FAQ says the breed can be slow to mature, and that many Berners’ bodies grow faster than their “brains.”

When is a Berner full grown?

No source we found gives an age when a Bernese Mountain Dog is full grown. The only figures we have are for large and giant breeds in general, so treat them as a rough frame, not a Berner rule:

• Bones: The AKC says growth plates in large and giant breeds close as late as 16 to 18 months, compared with 6 to 9 months in toy dogs. It advises asking your vet about your own dog.
• Height and weight: The AKC’s chief veterinarian says giant breed puppies grow until 12 to 18 months old. The same article notes that puppies keep building muscle and body fat after their bones stop growing.
• A study of four other large breeds: In a 2007 study of 700 Newfoundlands, Labradors, Leonbergers and Irish Wolfhounds raised in homes, dogs reached mature body weight between 351 and 413 days of age. Berners weren’t in the study.

For what’s known about puppy weights, from birth to adult, see our Bernese puppy growth and weight chart. It shows only sourced data points and says plainly where Berner data doesn’t exist.

Can you predict your puppy’s adult size?

Not with any precision we could source. It’s worth asking the breeder how big the parents are, but no source we found offers a formula for turning that into a puppy’s adult weight. Your vet can tell you how your puppy is growing at each visit.

Bernese Mountain Dog size comparison

Berners share their roots and markings with the other Swiss mountain breeds, and the biggest of them is close in height.

The Greater Swiss range starts and ends a little higher. Its standard also describes a heavy-boned dog with a body-length-to-height ratio of about 10 to 9. For more on the differences in coat, temperament and care, read Bernese vs Greater Swiss Mountain Dog.

People also compare Berners with Saint Bernards. We cover that breed in Bernese Mountain Dog vs Saint Bernard.

What a Berner’s size means for daily life

A dog of 70 to 115 pounds changes how you set up your home. The BMDCA’s sheets point to a few things to plan for.

Heat

The BMDCA says Berners’ size and heavy black coats make them prone to heat stroke. It suggests a climate-controlled home in hot weather and saving activity for the coolest part of the day. Our guide to keeping a Berner cool covers this in detail.

Fencing and space

The same sheet says Berners usually aren’t jumpers or climbers but need a sturdy four- or five-foot fence. It adds that many breeders won’t place a dog without suitable fencing, and that Berners like to dig. A small yard is a safe place to go out, the club says, not a replacement for real exercise.

Exercise

The BMDCA calls the Berner a moderately active breed. For some adults, it says, a daily minimum of 30 minutes of moderately vigorous exercise plus several trips outside is enough, while others need a good deal more to stay fit and pleasant to live with.

Puppies are different. Their exercise should never be forced, the club’s first-year sheet says, and unsupervised play with older or larger dogs can easily injure them. Our guide to how much exercise a Bernese puppy needs explains how to keep growing joints safe.

Children

Size is one reason to supervise closely. The BMDCA says any large dog, even a Berner, should never be left alone with small children or children it doesn’t know. See are Bernese good with kids for more.

Costs

Plan your budget around a big dog. The BMDCA notes that treatment and hospital costs for a seriously ill dog can be many times the purchase price. Our cost of owning a Bernese guide helps you build a first-year and lifetime budget.

Helping your Berner reach a healthy adult size

You can’t change how big your puppy is meant to be, but you can help it grow at a steady pace. The BMDCA’s puppy’s first year sheet says large breeds can grow very fast, and that fast growth isn’t wanted because it strains young muscles and tendons. It says many Berner breeders aim to keep growth and weight steady and slow.

The same sheet says puppy exercise should never be forced, such as jogging or long rough play. Cornell advises a diet made for large-breed puppies and no calcium or vitamin D supplements. Ask your vet how much to feed and how your puppy’s growth looks at each visit.

The BMDCA also says every Berner should be screened for hip dysplasia, elbow dysplasia and eye disease at a minimum. Talk with your vet about when to do it.

The bottom line on size

Plan for a dog that stands 23 to 27½ inches at the shoulder and weighs somewhere between 70 and 115 pounds. The ranges are wide, and your dog’s healthy weight depends on its frame, so lean on your vet rather than a single number.

For the rest of what makes a Berner a Berner, from temperament to health, start with our complete Bernese Mountain Dog breed guide.