Rottweiler Growth Chart – When Are Rottweilers Fully Grown?

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Getting a Rottweiler puppy is such an exciting thing and as responsible owners, we would like to care for our Rotties the best we can. You probably already know that Rottweilers are among the breeds that have a certain predisposition for hip dysplasia.

So when I got my first Rottweiler puppy, I was so worried if she was growing right, if her food was the correct type and amount and if her growth was healthy and natural.

Besides the health aspects, isn’t it interesting to know how big your young dog will get? Especially large and giant breeds have such explosive growth that it’s hard to believe that a few pounds could develop into nearly 100 pounds in a matter of months.

In the following post, we will talk about everything you need to know about the Rottweiler’s growth, the growth stages, and how you can even calculate your dog’s estimated adult weight and height.

Adult black and tan Rottweiler

Rottweiler Growth Chart

Your Rottweiler’s adult weight and height are primarily determined by genetics. Looking at the sire and dam of your puppy will give you the most information about their final size.

While female puppies come more after their mother and male puppies more after their father, they will generally receive 25% from each of their parents and another 50% will come from a gene pool mix between them.

Although females usually tend to be smaller in size and weight, comparing them with another litter could provide different results.

It’s very important to focus on your own litter rather than trying to achieve a certain weight or height goal that you have seen from a friend’s dog. Going with the biggest puppy of the litter won’t promise you the biggest adult in the end either.

Contact past litters from your chosen breeder and ask about their experience regarding their puppy’s health, size, and temperament. I would recommend this to everyone that is still in the choosing process to find a reputable breeder.

Besides genetics, diet and activity level also play huge roles. Unfortunately, many owners tend to overfeed their Rottweilers in an effort to speed up their growth and make them as bulky as possible.

Overfeeding any dog is dangerous but especially concerning in large and giant breeds. Keeping their growth at a slower rate and their weight on the lighter end of the scale will ensure a healthy coalescence of their bones.

Choosing the right food is crucial in their development. Some brands offer kibble that is specifically designed for a certain breed but that doesn’t mean that there is nothing bad on the ingredients list.

If you are unsure about what ingredients should be in your dog’s food and which are even a health hazard, you can download my free diet guide by clicking here.

Furthermore, there is a difference between the German and American bloodlines. German Rottweilers are slightly larger and more muscular compared to their American cousins.

Working lines and show lines also have their differences in size, exercise needs and temperament. Working dogs might be stronger with a high drive and activity level which in turn also influences their growth.

Keep in mind that the following numbers are only estimates and mere guidelines and are not guaranteed results. Your dog might grow to be on the heavier end or grows up to be even lighter and smaller.

AgeWeight (f)Height (f)Weight (m)Height (m)
8 Weeks13 lbs (6 kg)13 inch (34 cm)16 lbs (7 kg)13 inch (34 cm)
10 Weeks22 lbs (10 kg)15 inch (40 cm)26 lbs (12 kg)15 inch (40 cm)
12 Weeks33 lbs (14 kg)18 inch (45 cm)37 lbs (17 kg)18 inch (45 cm)
4 Months37 lbs (17 kg)19 inch (49 cm)50 lbs (23 kg)20 inch (51 cm)
5 Months50 lbs (23 kg)21 inch (53 cm)64 lbs (29 kg)22 inch (56 cm)
6 Months63 lbs (28 kg)23 inch (58 cm)75 lbs (34 kg)23 inch (59 cm)
7 Months77 lbs (35 kg)24 inch (61 cm)75 lbs (34 kg)25 inch (63 cm)
8 Months80 lbs (36 kg)24 inch (62 cm)86 lbs (39 kg)25 inch (64 cm)
9 Months83 lbs (38 kg)24 inch (62 cm)98 lbs (44 kg)26 inch (66 cm)
10 Months88 lbs (40 kg)24 inch (62 cm)106 lbs (48 kg)26 inch (66 cm)
12 Months93 lbs (42 kg)25 inch (63 cm)110 lbs (50 kg)26 inch (67 cm)
24 Months99 lbs (45 kg)25 inch (63 cm)120 lbs (54 kg)26 inch (67 cm)

I have also designed a much prettier chart that you can download and print out if you desire.

Rottweiler growth chart

Rottweiler Growth Stages

During your Rottweiler puppy’s growth period, he will go through several stages that are also milestones for his development and behavior. If you would like to go further into these periods, make sure to check out my guide on all 8 developmental stages.

Now in this post, I won’t go over any of these stages (neonatal, transitional, socialization, juvenile, and adolescence) and rather focus on the physical growth that is happening inside your dog’s body.

Puppies grow the most in their first week of life, where they double in size from their birth weight.

They will continue to rapidly grow until 6-8 weeks of age. After that point, puppies will grow for at least several more months (sometimes even a year or two) although the growth rate will be slower.

For the sake of this topic, I have chosen 5 random stages between the age of 10 weeks and 12 months.

10 Week Old Rottweiler

With only 10 weeks of age, your Rottweiler will be enjoying his first days at home with you. Looking at the growth chart, you can expect him to weigh about 22-26 lbs (10-12 kg) with a height of about 15 inches (40 cm).

His growth plates (soft area of cartilage from which bones (such as your puppy’s legs) grow and extend) and joints will be very soft and wobbly which gives your puppy this cute walking stance.

On average your Rottweiler puppy will gain about 2.2 lbs (1 kg) per week until 8-9 months of age.

10 week old Rottweiler puppy

3 Months Old Rottweiler

By the age of 12 weeks, he will have gained an additional 11 lbs (4-5 kg) in weight and 3 inches (5 cm) in height. With the socialization period ending your puppy has fully developed all his senses and the growth rate starts to slow down.

Puppies will reach their full height before they reach their adult weight. At 3-4 months of age, puppies will have reached about 60% of their adult height but only 30% of their adult weight.

7 Months Old Rottweiler

Your Rottweiler has now left his main growth period. Between birth and 5-7 months, large and giant breeds will have the most rapid growth during which they reach approx. 65% of their adult height.

He will continue to put on weight and height but at a much slower rate. You can expect your 7 month old Rottweiler to weigh about 79-99 lbs (36-45 kg) with a height of 24-26 inches (62-66 cm).

This was around the time when we stopped feeding Amalia her puppy food which we got from the breeder (breed-specific formulation) and changed her diet to raw.

9 Months Old Rottweiler

Your puppy is now in his teenage years and still has a long way to his final size. Did you know that most small breeds will be fully grown by now? Crazy to think about the different maturity rates within the same species.

At 9 months of age you can expect your Rottweiler to weigh about 82-98 lbs (37-44 kg) and be 24-26 inches (62-66 cm) in size.

Your dog will also reach sexual maturity and have all of his 42 permanent teeth. A coat change will leave your vacuum running non stop.

12 Months Old Rottweiler

Most large and giant breed puppies will stop growing around the age of 12-18 months. This is also the time when the growth plates harden and fully close. Now you might have seen in the chart that they can still put on some weight.

This is due to the unique structure of the Rottweiler and other similar build breeds. Some Rottweiler’s grow in size until they are 3 years old. Muscles as well as broader chests and bigger heads are the reason for this.

Although the head is something that is growing pretty long, the body is usually the last thing to completely fill out. So even if your Rottweiler’s growth plates close at the age of 12-18 months, his full visual appearance may change until he is 3 years old.

So if you believe that your Rottweiler is currently looking like a “bubble-head” don’t be fooled by this disproportional appearance as it will probably change over time. But there are also some Rottie’s that never fill out their bone structure.

My Rottweiler Amalia is now 2 years old and weighs about 90 lbs (41 kg) with a height of 24 inches (62 cm). She looks extremely healthy (you can have a look at her on Instagram @rottweiler.amalia) and I believe this to be her ideal weight.

How to Calculate Your Rottweiler’s Adult Weight

If you are just tired of guessing around then you will probably be happy to hear that there is actually a way to calculate your dog’s adult body weight.

You won’t need any information for that other than your dog’s weight at a certain time so if you don’t know your puppy’s parents, the calculation will still work.

Calculating the estimated size of a medium to large breed dog involves taking the weight at 14 weeks old, and then multiplying by 2.5 to get the final number.

As an example, if your 14 week old puppy weighs 25 pounds, then take 25 times 2.5 to get 62.5 pounds as an estimate for your puppy’s adult weight. 

What happens if you don’t know how much your puppy weighed at 14 weeks old? If that’s the case, you can also estimate their adult weight when they are 6 months old.

A second way to calculate their adult weight is by doubling your Rottweiler’s weight at 4 months old and adding about 10 pounds.

Rottweiler head

What Is the Average Weight of a Full-Grown Rottweiler?

The average weight of a full-grown female Rottweiler could be anywhere from 83-99 lbs (36-45 kg) while an adult male Rottweiler could weigh 110-132 lbs (49-60 kg).

But this is just the average weight and your Rottweiler could weigh more or less than these numbers.

The AKC breed standard lists the average weight as 95-135 pounds for a male and 80-100 pounds for a female Rottweiler.

How Long Does It Take for a Rottweiler to be Fully Grown?

It usually takes the Rottweiler one year to be fully grown in height. However, they may still put on weight and broaden their chest until they are 2-3 years old.

Some Rottweilers never fill out their bone structure and they may be finished once their growth plates close. Be patient and don’t try to speed up the growth in any way.

An average large dog will be fully grown around 14 months, although they can have a second growth spurt between 8-14 months that speeds up their growth later in life than smaller dogs.

How Big Should My Rottweiler Be?

At the end of the day each and every dog is unique even within the same litter. Your primary focus should always be your Rottie’s health.

A great rule of thumb that you can follow is simply to try petting your dog. Can you slightly feel that there is a rib cage underneath or is a thick layer of skin in between?

The ribs themselves shouldn’t be visible but palpable. When you look at your standing dog from above, the waist should be visible distinct from the rest of the body. There are many reference images for that on the internet.

If you are concerned about your dog’s weight simply ask a veterinarian that has experience with heavier breeds. Some vets will have problems evaluating the best weight and size for bulkier breeds.

About Danielle

In love with dogs, their behavior and psychology. I am writing on this blog since February 2019 to provide you with valuable information on everything dogs. When I am not working on my blog, I study research articles and enjoy the time with my beloved Rottweiler Amalia.

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