Newfoundland Size Guide How Big Does a Newfoundland Get

Known for its sweet nature, high intelligence levels, and massive stature, the Newfoundland is one of the oldest and most popular breeds all across the globe. With its distinguishable looks and the most adorable personality, the Newfie has earned its name as a noble giant. They’re loyal and devoted dogs who are super friendly and surprisingly playful considering their size. And although they’re majestic and large, their unmatched patience make them great playmates for children as well. If you’re planning to adopt this gorgeous giant pup, you might be wondering, how big do Newfoundlands get? What’s the average Newfoundland size? And when are Newfoundlands fully-grown? In this guide, we’ll answer all of your questions about the Newfie’s size and growth patterns. Pssst… Here you’ll also find our interactive Newfoundland size chart and growth calculator, which is a must have tool for all Newfoundland puppy parents. Let’s get started!


Our handy interactive puppy growth chart and calculator takes all the hard work out of predicting your puppy’s potential adult size. This helps you to know exactly what you are in for.

Psst! Check Out These Awesome Puppy Things!

Newfoundland Size Predictions: How Big Do Newfoundlands Get?

As a giant breed, Newfoundlands are known for their size and muscular build. Not only are they tall and heavy, they have the softest, cushiest coats, which make them look even bigger. Nevertheless, underneath the thick coat is a heavy pup who can weigh even above 150 pounds once fully-grown. On average, Newfies weigh anywhere between 100 and 150 pounds and stand around 26 to 28 inches tall at the shoulder. 

Having said that, it’s completely normal for some Newfoundlands to fall slightly outside of the usual breed standards. Typically, they might be heavier and taller. However, although chubby pups look cute, you shouldn’t overfeed your dog to the point of obesity, as this is a huge risk factor for many health concerns and diseases. If you’re worried about your Newfie’s size, we recommend you consult with your veterinarian to find a suitable diet, caloric intake, and screen for any underlying health issues.


Additionally, this is why it’s particularly important that your Newfoundland puppy gets the correct nourishment he needs to grow that adorable little body into a healthy adult one. Check out these guides on best dog food for puppies here.

In addition to that, a Newfie’s size is also influenced by its diet, gender, the size of its parents, or even how much they exercise. For this reason, it’s especially important you feed your dog the right amount of food to promote their proper development and maintain a healthy weight. 

Are There Different Sizes Of Newfoundlands?

As we briefly mentioned, the Newfoundland size can, in fact, vary between males and females. Like with many other large and giant breed dogs, there’s a considerable difference between male and female Newfies. 

Let’s take a closer look at the Newfoundland size chart comparing males and females:

Male NewfoundlandFemale Newfoundland
Weight130-150 pounds100-120 pounds
Height28 inches on average26 inches on average
When Full-Grown?24-36 months24-36 months

*A dog’s height is measured from the withers, also known as their shoulder blades.

As we can see from the Newfoundland size chart above, males are typically a few inches taller and they can be up to 50 pounds heavier than females. A male Newfoundland usually weighs between 130 and 150 pounds and stands about 28 inches tall at the shoulder. Female Newfoundlands tend to weigh between 100 and 120 pounds with an average height of 26 inches. 


Newfoundland Size Charts & Growth Patterns – Month Wise

Like other large and giant breeds, the Newfoundland experiences its fastest growth in the first 6 months from birth. By that time, Newfies are already pretty large dogs and they’ll continue to get bigger and bigger up until their second birthday. However, like other dogs, Newfies usually reach their adult height sooner than they reach their adult weight. So don’t be surprised if your puppy stops growing in height around their first birthday, they will continue to gain weight and girth even after that. 

Let’s take a look at the average Newfoundland size chart by age (males):

Age3 months6 months9 months12 months24 months
Weight25-40 pounds60-85 pounds85-115 pounds115-130 pounds130-150 pounds
Height15 inches21 inches25 inches27 inches28 inches

Looking at the Newfoundland size chart above, we learn that this breed tends to reach half its adult height already at 3 months old. By 6 months old, they’ve likely reached half their adult weight and around ¾ of their adult height. Around their first birthday, Newfies have reached almost, if not all of their adult height, and most of their adult weight. By then, their growth has considerably slowed down, and the weight gain isn’t as noticeable anymore. We can typically expect a Newfoundland puppy to finish growing by the time they turn 2 years old. 

Tip for Newfoundland puppy parents: Want to predict and track your puppy’s weight? Our interactive Newfoundland size chart and growth calculator takes the guesswork out of your hands. Simply enter your puppy’s current weight and current age in weeks, and our calculator predicts your Newfoundland’s full-grown size. 

Newfoundland Size: Frequently Asked Questions

How Big Is A Full-Grown Newfoundland?

A full-grown Newfoundland weighs between 100 and 150 pounds and stands 26-28 inches tall at the shoulder. As with many other larger breeds, males tend to be heavier and taller than females. On average, male Newfoundlands weigh between 130 and 150 pounds with a height of 28 inches at the shoulder. Female Newfoundlands weigh between 100 and 120 pounds and they’re about 26 inches tall. 


You can calculate their potential adult weight at 23 weeks by taking what they weigh at that age and multiplying it by two.

A different formula you could use is:

  1. Growth = current weight / current age in weeks
  2. Adult weight = Growth x 52 (number of weeks in one year)

So, for example, if your 12-week old pup weighs 18 pounds. You simply divide the current weight by their age in weeks and multiply the result with 52:

18/ 12 = 1.5
1.5 x 52= 78 pounds

78 pounds would be the expected weight of your adult-sized Newfoundland.

Is Newfoundland Considered A Giant Breed?

The Newfoundland is considered a giant-sized breed. They’re heavy, tall, strong, and have a muscular build. Although Newfoundlands don’t require as much exercise as some other large and giant breed dogs, they would still thrive best in a spacious home where they have plenty of room to move around and feel comfy. 

To conclude, a gentle and noble giant, the Newfoundland is a wonderful pet for singles and families alike. If you’ve got your eyes set on the cuddly Newfie, it only makes sense to be fully aware about your puppy’s growth stages from the moment you bring them home and up until they reach adulthood. We hope you’ve found our Newfoundland size guide a helpful resource and have learned some useful facts about their size and growth patterns. 

Parents of Newfoundlands: How big is your pup? Let us know in the comments below!

Pin It!