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Puppy Growth Chart – Estimate Your Puppy’s Adult Weight

Puppy Growth Charts
Written by Adriana

If you are thinking about making an addition to your family in the form of a new puppy then there a few things you must consider to ensure that both you and your new pup are comfortable.

For instance, it may be beneficial to consult a puppy growth chart first, so you can get a good idea of what to expect as your pup develops.

Since accommodation is a major concern for many dog parents, the need to anticipate your puppy’s size and growth rate is crucial.

For example, the approximate size of your pup is useful when you need to make decisions such as the type of crate you need to purchase to transport him. It also comes in handy when allocating a designated area for rest or play.

To make accurate predictions of your puppy size in the future, we have formulated a few guidelines for how long puppies will take to grow, how dog breed affects the size throughout development and approximate prediction of the pup’s adult weight.

Is A Dog Full Grown At 12 Months? 

When Is A Dog Full Grown

There is no simple answer to this question as it depends on the dog. For example, small dog breeds like Chihuahuas usually reach their full size by 10 -12 months.

On the other hand, small-medium dog breeds like Beagles, Miniature Schnauzers, and Toy Poodles will complete their growth by about 12-15 months and will have attained their full weight by around 18 months.

Medium to large dog breeds such as Boxers, Labrador Retrievers, and Collies are usually full-grown at around 18 months and at 2 years old they would have attained their full weight. Giant dog breeds are fully grown into their paws by about 18 months.

Generally for giant dog breeds, a good way to tell is the size of their paws. Big dog breeds have oversized paws that look disproportional to the rest of the body when they are puppies.

They have a more proportional body, after fully “growing into” their paws. Remember that the timeline for each pet will differ.

Puppy Weight Chart – Toy Breeds

Birth Weight2.5 oz3.5 oz4.5 oz5.5 oz6.5 oz
Age
1 week3.5 oz6 oz9 oz10 oz12 oz
2 weeks5 oz7 oz12 oz14 oz18 oz
4 weeks8 oz12 oz18 oz22 oz24 oz
6 weeks10 oz16 oz24 oz29 oz34 oz
8 weeks12 oz20 oz29 oz35 oz42 oz
10 weeks14 oz23 oz33 oz40 oz47 oz
12 weeks16 oz27 oz39 oz47 oz55 oz
14 weeks18 oz31 oz45 oz52 oz62 oz
16 weeks20 oz35 oz52 oz59 oz72 oz
18 weeks22 oz38 oz54 oz67 oz78 oz
20 weeks24 oz42 oz58 oz72 oz82 oz
22 weeks26 oz44 oz62 oz76 oz86 oz
24 weeks28 oz46 oz66 oz78 oz90 oz
Adult Weight1.75 lbs3.5 lbs5 lbs6 lbs7 lbs

The Toy breeds include dog breeds such as Chihuahua, Toy Poodle, Shih Tzu, Maltese, Havanese, Cavalier King Charles Spaniel, Pomeranian, Miniature Pinscher, and Yorkie.

On average, Toy breeds add about 5 – 10% to their body weight every day. This amounts to roughly around 1 – 6 oz per week. Smaller dogs tend to develop much faster than larger dogs do and usually attain their adult weight at 8-9 months of age. 

The following chart helps to illustrate the future weight of your toy puppy, and it works with its birth weight. Even if you are unaware of your puppy’s birth weight, you’ll still be able to estimate his adult weight. 

All you need to do is look for his age that will be located along the left column of the puppy growth chart. Then all you need to do is find the nearest associated weight at that age.

Next, you should go down that column to see what he will weigh as an adult or every milestone along the way. 

Calculating The Adult Weight Of A Toy Breed Puppy

Toy Breed Puppy Weight Chart

To calculate your toy puppy’s adult weight another way you can take his weight at 6-weeks old, double it, then double it again.

Most of us probably won’t know what his weight was at that age is, so you can use the puppy weight chart to help you. Simply look for his current age and weight and work back. 

For example, if a 12-week old puppy weighs 16 ounces, as seen in the chart, his 6-week weight was probably between 10 – 12 ounces. You should double that to 20 – 24 ounces then, double that again to between 40 – 48 ounces. 

Puppy Weight Chart – Small Breeds

AgeWeightWeightWeight
8 weeks2 lbs3 lbs4 lbs
10 weeks2.5 lbs4 lbs5.5 lbs
12 weeks3.5 lbs5 lbs6.5 lbs
14 weeks4 lbs6 lbs7.5 lbs
16 weeks4.5 lbs7 lbs9 lbs
5 months6 lbs8.5 lbs12 lbs
6 months7 lbs10 lbs14 lbs
7 months8 lbs11.5 lbs16 lbs
8 months9 lbs13.5 lbs18 lbs
10 months11 lbs16.5 lbs22 lbs
12 months13 lbs20 lbs27 lbs

Even though they typically don’t develop as fast as the toy versions, small dogs still grow faster than large dogs. 

They attain their adult weight at around 8-12 months. These include dog breeds like Jack Russell Terrier, Bolognese, French Bulldog, Cocker Spaniel, and Boston Terrier.

There is some overlap with the toy breed size, especially at the lower end of that scale and the medium-sized dogs at the higher end.

But generally, the small breeds comprise dogs between 12 and 25 lbs. Small breeds usually gain weight at a rate of 5-10% increase each day which comes up to approximately 5-8 ounces per week.

You can use this detailed puppy growth chart to estimate the future size of your small puppy. Simply find the weight closest to your puppy’s age and go down that column to see the age at 12 months, which likely will be his adult weight.

For instance, if you have a 16-week old puppy that weighs 7lbs, follow the weight down that column to see where he/she will be about 20 lbs when fully grown.

Calculating The Adult Weight Of A Small Breed Puppy

Small Breed Puppy Weight Chart

If your dog’s weight or age isn’t on the puppy growth chart you can simply find the average. For example, you need to find the average of the two, if your puppy is in between two weights for his age.

To determine his adult weight another thing you can do is to find your puppy’s growth rate and times that by 52. That is if you don’t mind a bit of math. 

You know his growth rate by finding out how much weight he gains in one week. This is found by calculating his current weight and dividing this by his age in weeks.  

Puppy Weight Chart – Medium Breeds

AgeWeightWeightWeight
8 weeks5 lbs6 lbs8 lbs
10 weeks6.5 lbs8 lbs10.5 lbs
12 weeks8 lbs10 lbs12 lbs
14 weeks9.5 lbs12 lbs15 lbs
16 weeks11 lbs14 lbs17 lbs
5 months14 lbs18 lbs23 lbs
6 months17 lbs20 lbs27 lbs
7 months19 lbs23 lbs31 lbs
8 months22 lbs27 lbs36 lbs
10 months27 lbs33 lbs43 lbs
12 months33 lbs40 lbs53 lbs

At around 9-10 months of age, medium dogs usually attain 99% of their adult weight. Generally, the medium breed types are comprised of breeds that are around 25 -50 lbs.

It should go without saying that there is some overlap with the large size dogs at the higher end and the small breed size at the lower end of that scale. 

Medium breed dogs include beautiful breeds like the English Bulldog, Australian Cattle Dog, Bull Terrier, Border Collie, Chow Chow, and Corgi.

You will be able to use the following chart to estimate the future weight of your puppy at his fully grown stage. The chart works basically in the same way, but there are different measurements for dogs that are in the medium-size category.  

Another great benefit of using the chart estimations is that you will also be able to see how much he’ll weigh at each major milestone, in his life.

It is easy to use the chart! Simply look for your puppy’s age along the left side column, then look for where he falls based on his current weight. 

Therefore, if your pup is 12 weeks old and weighs 8 lbs, then follow that column down to the “12-month” row, which in this case is 33 lbs.

This will be the approximate weight of your pup as an adult. Don’t worry, if your puppy’s age or weight isn’t listed on the chart because there are still a few things you can do to determine his adult weight.

Calculating The Adult Weight Of A Medium Breed Puppy

Medium Breed Puppy Weight Chart

To determine the adult weight of a medium breed pup when he is between two weights for his age, you need to find the average of the two weights. You also have the option of using your puppy’s growth rate.

First, you will need to figure out your puppy’s growth rate which is his current weight in lbs divided by his current age in weeks. Next, you should multiply the growth rate by 52. The result is the estimated weight of your puppy as an adult.

If you know your medium breed puppy’s weight at 14 weeks, you can use this method of calculating the adult weight. Firstly, you should weigh him at 14 weeks, then multiply this amount by 2. The next step is to add this figure to half the weight at 14 weeks.

Puppy Weight Chart – Large Breeds

AgeWeightWeightWeight
8 weeks11 lbs13 lbs15 lbs
10 weeks14 lbs17 lbs19 lbs
12 weeks17 lbs20 lbs23 lbs
14 weeks20 lbs23 lbs27 lbs
16 weeks23 lbs27 lbs29 lbs
5 months31 lbs36 lbs31 lbs
6 months36 lbs43 lbs42 lbs
7 months42 lbs49 lbs57 lbs
8 months48 lbs57 lbs66 lbs
10 months60 lbs64 lbs82 lbs
12 months72 lbs85 lbs98 lbs
18 months105 lbs125 lbs145 lbs

To reach their full adult weight, large breed dogs take at least 12-18 months. Generally, large breed dogs are comprised of breeds that are between 50 and 100 lbs.

That said, there may be some overlap with the giant size dogs at the higher end and the medium breed size at the lower end of that scale.

Large breed dogs are comprised of dog breeds such as Doberman Pinscher, Akita, Boxer, Labrador Retriever, Belgian Malinois, German Shepherd Dog, and American Bulldog to name a few.

You can use the following chart to estimate the weight of your large breed puppy at full-grown age. Keep in mind that this is an estimate, so you will get a rough idea based on his current weight.

If you wish to use the puppy weight chart, then start with your puppy’s age within the left side column, then based on his current weight, look for the figure that is associated with his age in the adjacent columns.

With large breed dogs, you need to keep in mind that they keep growing past the one-year mark, so they might maintain their continual growth until they are 18 months old. If they keep growing until 18 months, some large breed dogs could weigh up to 107.3.

Calculating The Adult Weight Of A Large Breed Puppy

Large Breed Puppy Weight Chart

To determine the adult weight of a large breed pup when he is between two weights for his age, you can find the average of the two weights.

You also have the option of using your puppy’s growth rate. First, you will need to figure out your puppy’s growth rate, which is his current weight in pounds (at 20 weeks) divided by his current age in weeks.

Next, you should multiply the growth rate by 52. The result is the estimated weight of your puppy as an adult.

If you know your large breed puppy’s weight at six months old, you can use this method of calculating the adult weight. Firstly you should weigh him at six months, then multiply this amount by 2. The next step is to add this figure to half the weight at six months.

Puppy Weight Chart – Giant Breeds

AgeWeightWeightWeight
8 weeks17 lbs19 lbs21 lbs
10 weeks22 lbs24 lbs27 lbs
12 weeks26 lbs29 lbs32 lbs
14 weeks30 lbs34 lbs28 lbs
16 weeks35 lbs39 lbs43 lbs
5 months37 lbs41 lbs45 lbs
6 months56 lbs62 lbs69 lbs
7 months64 lbs72 lbs79 lbs
8 months75 lbs84 lbs92 lbs
10 months92 lbs103 lbs113 lbs
12 months112 lbs125 lbs138 lbs
18 months165 lbs185 lbs205 lbs

Although there is some overlap with the large breed size at the lower end of the scale, the large breed category consists of breeds that are over 100 lbs.

Large breed dogs are comprised of dog breeds such as Great Pyrenees, Newfoundland, Leonberger, Irish Wolfhound, Bernese Mountain Dog, Great Dane, and Tibetian Mastiff.

Typically, giant breed dogs take a longer time to attain their adult weight which is at least 12 – 18 months of age.  Some Giant breeds that are at the top end of the scale, may even continue to grow up to 2 or 3 years old.

For example, dog breeds such as Newfoundlands, Great Dane’s, and Mastiffs, just to name a few. These giant dogs at the top of the scale will gain about 3 – 5 lbs per week and those at the lower end usually gain 2 – 3 lbs per week.

Use the following chart to get a rough idea based on his current weight, to estimate what your giant breed puppy will weigh when full-grown. Look for where he falls based on his current weight, but start with your puppy’s age along the left side column.

It’s important to note that, many giant breed dogs continue growing past 12 months, so your puppy may keep growing until he is 18 months old or even in some cases 3-years old. 

Calculating The Adult Weight Of A Giant Breed Puppy

Giant Breed Puppy Weight Chart

To determine the adult weight of a giant breed pup when he is between two weights for his age, you can find the average of the two weights. You also have the option of using your puppy’s growth rate.

First, you will need to figure out your puppy’s growth rate, which is his current weight in pounds (at 20 weeks) divided by his current age in weeks. Next, you should multiply the growth rate by 52. The result is the estimated weight of your puppy as an adult.

If you know your giant breed puppy’s weight at six months old, you can use this method of calculating the adult weight. Firstly, you should weigh him at six months, then multiply this amount by 2. The next step is to add this figure to half the weight at six months.

If you’re trying to use the chart to find your puppy’s adult, but notice his weight isn’t on there, it’s easy to find out what he weighed at a certain weight by looking at your vet’s record or receipt. 

Factors That Affect Your Puppy’s Size

Breed Size

The breed size has been known to affect your puppy’s development and different breeds develop and reach adulthood at different rates.

Even though the general rule of thumb is that dogs younger than one-year-old are seen as puppies, a puppy’s size can determine whether he reaches adult maturity before one year of age.

Some breeds have been documented to reach full maturity at closer to 24 months of age and some of them even older than that. Usually, larger dog breeds take a longer time to reach adulthood.

Genetics 

Genetic factors greatly affect your dog’s growth. These hereditary factors determine the growth rate as well as other essential factors that add to their development.

For example, if both parents are large, then the offspring will be also. The fully grown dog will be approximately the average of the parents’ sizes. 

Genetics

Gender 

Numerous research studies into dogs have found that sex differences in weight gain and development contribute to the size of your dog.

Male dogs, not surprisingly, tend to larger in early adolescence. Most dog breeds tend to have males slightly larger than their female counterparts.

A lot of the research concentrates on breed differences as the determining factor for growth rate with a few of them looking at sex as a factor.

Health & Nutrition

It is not often that we may hear of underfed puppies, but it does happen. In most cases, puppies are malnourished when their owners are feeding them incorrectly, as opposed to simply not feeding them enough.

If puppies are not fed a balanced diet suitable for a carnivore, poor growth and other health problems are likely to occur. Along with a proper diet, you should engage your puppy in adequate amounts of physical activity.

This allows him to develop strong bones and muscles. His mood will also be improved.

Puppy Development Stages

Puppy Development Stages

Neonatal Period: Birth – 3 Weeks

Dogs are born fully furred, in a delicate state as they are can’t look after themselves. They depend on their mother for warmth comfort and nourishment. 

His eyes and ears closed, so he cannot hear or see. His front feet have a bit of strength, and he can pull himself towards his mother for food and warmth.

If he is uncomfortable, he can cry, and his mother will respond to his cries by moving him towards her and licking him.

Newborn puppies require an optimal temperature to survive. They snuggle close to their mother, but they can’t walk yet because of their undeveloped muscles.

The puppies need this time with their mothers so that they may grow. He will grow rapidly, adding 5-10% of his body weight.

Socialization Period: 3 Weeks – 12 Weeks

Between 3-12 weeks, your puppy will go through many changes, as its muscles begin to get stronger. They become active, playful, and strong on their legs.

They play actively with their littermates and start moving away from the sleeping area to empty their bowels and bladder.

This is the stage when they may try to climb out of the whelping box. Also, their mother will start to spend more time away from the puppies.8 Weeks Puppy Weight Chart

She may re-join the family for more of each day if she lives indoors. He will also start getting quite a bit of his nourishment from puppy food. 

They need to be thoroughly socialized as during this time they become fearful of anything unfamiliar. Most puppies come to know house-training, learning to wait before eliminating, and start sleeping through the night without a potty break, at this stage.

Juvenile Period: 3 Months – 6 Months

During this stage, puppies start to lose that very young puppy ‘look’ and more closely resemble a miniature version of their adult selves.

Medium to large pups will reach about half their adult height by the end of the month. Puppies under four months don’t need formal walks, just lots of opportunities to play and run around in your garden or yard.

This is when some puppies become less dependent on their humans for security.

Make sure your puppy is close to you outdoors by changing direction frequently so that your puppy has to keep coming to find you. This is so that he will not get lost after straying too far.

Sexual Maturity: 6 months – 16 months

Unless you have had your puppy spayed or neutered, he/she now has an abundance of sex hormones coursing through the system.

These help to build his confidence and slow growth further. You should practice good outdoor management on walks so that good recall is maintained. 

6 Months Old Puppy Weight Chart

Once they have completed their first season, many female dogs are neutered. This is up to the owner. It is not advised to allow your dog to be impregnated on the first heat cycle as many are unprepared, and the risks are high.

Once your dog is 12 months old he can participate in more vigorous activities and sports.

Transition To Adult Period: 16 Months – 36 Months 

There is huge variation in the way in which dogs develop and mature. The puppy development stages and ages outlined above are a rough guide. Different dog breeds attain adulthood at different stages. When it comes to training, you get out what you put in. 

A full-grown dog is usually compact and muscular, with a well-balanced physique. Many dogs will continue to fill out their chests and gain muscle until they are two or sometimes three years old.

How To Predict Your Dog’s Weight If It’s A Mixed Breed

You may feel like you’re completely in the dark if you have a mixed breed dog, as you may be just guessing, how big your treasured companion is going to be.

After all, your mixed dog could take the trait of two or more dog breeds. The good news is that all hope is not lost. You can solve this dilemma in two ways. 

You could look at the growth charts within this article and see where your puppy fits in best. Or you could use a DNA test to see which breeds your puppy is mixed with, to be more precise.

In this way, you’ll know which puppy weight chart to use. There are great DNA tests available to help you make an accurate prediction.

At What Age Do Puppies Reach Their Full Adult Height?

Many people would like to know how old are dogs when they stop growing. Depending mainly on the size and breed of your dog, physical maturity in terms of height is attained at different ages.

Smaller dog breeds complete their growth much sooner than big dogs, therefore it varies from dog to dog. 

Adult Dog Height

Even within a specific dog breed, dogs vary in the final size that they are likely to reach as well as in their growth rates.

It’s virtually impossible to accurately estimate exact weights at any of the main puppy development stages. There are not just differences between breeds and among the same breed, but also even between litter-mates.

Does The Smallest Puppy In A Litter Stay The Smallest? 

It can be a struggle to get enough attention from mum sometimes, particularly in large litters as it is often harder to make sure no puppy gets left out.

Nevertheless, being the smallest puppy in a litter isn’t necessarily a death sentence.  There should be no issue if they’re still within the healthy weight range for their breed and age, and growing at an appropriate rate. 

Sometimes the newborn puppy’s birth weight is considerably low and falls outside their healthy range for their breed. These puppies frequently struggle to gain weight after birth and are slow to develop.

With the advice from your vet and special care and attention, you can ensure that a pup like this does not remain the smallest. It may be special care in feeding, exercise, or even supplements for growth.

What If My Puppy Grows Too Fast Or Too Slow

There may be times when your vet feels that the growth of your dog is too slow or too fast. You would need to regulate the amount of food you feed your puppy. You can add additional supplements to your puppy’s diet to make the food more nutritious.

Puppy Growth Rate

However, you should avoid free-feeding your puppy as you risk allowing it to grow faster than you anticipate. Monitor his weight and verify with your vet.

Can Spaying & Neutering Affect My Puppy’s Growth 

Since your dog’s sex hormones are involved in the puppy development stages, neutering affects the final size of your dog. These hormones tell your dog’s body to ‘stop growing’.

When a dog is neutered before the completion of his physical development, he will carry on growing for longer because he lacks the sex hormones to switch off that growth. Therefore, a neutered dog may end up being taller than his entire litter. 

Final Words

These puppy weight charts, and formulas, are guidelines that help you to estimate the future weight of your puppy and his development as a dog.

Please keep in mind that all puppies and dogs grow at different rates, so all formulas and charts are based on average growth rates.

This means that the figures may vary slightly based on your dog’s genetics, lifestyle, and nutrition. Many of them will not develop at the same rate but will have little growth spurts along the way.

About the author

Adriana

Adriana has been around dogs since she was a little kid. It all started with growing up with a German Shepherd Lord and an English Cocker Spaniel Bady. Her dream job has always been becoming a veterinarian. She has been taking care of animals all of her life and she wants to share her experience with other dog lovers.