It’s one of the questions most asked to vets, trainers and breeders… “How big will my puppy get?!”
Some people will tell you to look at the size of their paws, however, the best way is to use a puppy weight calculator (jump to our calculator).
Knowing your breed can sometimes make it easier to guesstimate their adult size, however, this becomes increasingly difficult with mix-breeds, that’s why it’s best to use a puppy weight calculator to give you a better idea!
Accurately estimating your puppy’s adult weight is important when it comes to how much to feed a puppy based on their weight, exercising, and planning their crate or space requirements.
Puppy Weight Calculator
Calculate Your Puppy’s Adult Weight
There are some more predictable ways to figure out an estimated adult weight for your puppy, starting with a puppy weight calculator:
Enter your puppy’s age and weight.
Your puppy will weigh between 18lb and 18lb once they are fully grown.
7 Ways to Understand How Big Your Puppy Will Get
7. Start With Their Parents
This is your best chance at figuring out how big your puppy will get, especially if they are a mixed breed.
If you have a German Shepherd puppy, you will know from their breed standard, when fully grown they range from 48 to 90 pounds in weight.
But, if you know Mom weighed 50 pounds, and the Dad 65 pounds, you are more likely to have a small German Shepherd at around 60lb.
6. Litter Size Impacts Puppy Size
Smaller puppies tend to come from larger litters.
So how many siblings your puppy had influences how big a puppy grows in their lifetime.
Litter size varies from breed to breed, but identifying litter trends specific to your chosen puppy could help you understand how big your puppy is likely to get.
5. Are They Male Or Female?
The general rule is, due to sexual dimorphism, females are smaller than males.
If you would prefer a smaller puppy, a female may be better.
For example, female Labradors tend to weigh between 55-70 pounds whereas males are larger weighing between 65-80 pounds.
4. Their Environment & Exercise
Genetics has a large part to play in estimating a puppy’s adult weight, however the environment will also impact it.
Over-exercise can cause injury and damage to both the skeleton and ligaments of your puppy, which will then require rest.
This is not ideal for a developing puppy as exercise is how puppies increase their bone density.
One of the most important factors in how big your puppy will grow is nutrition.
This starts right from the day they are born.
Their Mom’s milk is made up of protein and fat which is crucial for the growth and development of new-born puppies; a lack of milk can stunt their growth significantly.
During weaning, puppies should have access to a quality food, it is essential to meet their nutritional needs.
If you want your pup to grow to their full potential, then a quality food, for their life stage is essential!
2. Breed Type
When your dog reaches their full size will depend on what breed they are.
Medium, large and giant breed puppies can take anywhere between 12-24 months to be fully grown.
Small and toy breeds are fully grown at around 12 months.
It is generally thought that for small breeds a 5oz gain per week is acceptable and for large breeds around 2lb per week.
1. Desexing A Dog
If you choose to neuter your dog, it will have an impact on how big your puppy will get.
It is thought that with the removal of the hormones, the bones don’t receive the message they need to stop growing, so puppyies can grow taller.
The concern is then the impact on how the joints align and the subsequent development of orthopaedic tissues; desexing should always be considered on a case by case basis in discussion with your veterinarian.
The bottom line, your puppy is a puppy.
Providing you are meeting their daily nutritional needs, they will grow.
Just remember, different puppy breeds will grow at different speeds throughout different growth phases.
Attend regular checks with your veterinarian and mention any concerns about their growth should they appear, you can also keep using our puppy weight calculator to monitor their growth over time!