Puppy Weight Calculator: How Big Will My Puppy Get?

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:

Select your puppy’s age:
–Age (weeks)–2 weeks old3 weeks old4 weeks old5 weeks old6 weeks old7 weeks old8 weeks old9 weeks old10 weeks old11 weeks old12 weeks old13 weeks old14 weeks old15 weeks old16 weeks old17 weeks old18 weeks old19 weeks old20 weeks old21 weeks old22 weeks old23 weeks old24 weeks old25 weeks old26 weeks old27 weeks old28 weeks old29 weeks old30 weeks old31 weeks old32 weeks old33 weeks old34 weeks old35 weeks old36 weeks old37 weeks old38 weeks old39 weeks old40 weeks old41 weeks old42 weeks old43 weeks old44 weeks old45 weeks old46 weeks old47 weeks old48 weeks old49 weeks old50 weeks old51 weeks old52 weeks old
Select your puppy’s weight:
–Weight (lb)–1 lb2 lb3 lb4 lb5 lb6 lb7 lb8 lb9 lb10 lb11 lb12 lb13 lb14 lb15 lb16 lb17 lb18 lb19 lb20 lb21 lb22 lb23 lb24 lb25 lb26 lb27 lb28 lb29 lb30 lb31 lb32 lb33 lb34 lb35 lb36 lb37 lb38 lb39 lb40 lb41 lb42 lb43 lb44 lb45 lb46 lb47 lb48 lb49 lb50 lb51 lb52 lb53 lb54 lb55 lb56 lb57 lb58 lb59 lb60 lb61 lb62 lb63 lb64 lb65 lb66 lb67 lb68 lb69 lb70 lb71 lb72 lb73 lb74 lb75 lb76 lb77 lb78 lb79 lb80 lb81 lb82 lb83 lb84 lb85 lb86 lb87 lb88 lb89 lb90 lb91 lb92 lb93 lb94 lb95 lb96 lb97 lb98 lb99 lb100 lb101 lb102 lb103 lb104 lb105 lb106 lb107 lb108 lb109 lb110 lb111 lb112 lb113 lb114 lb115 lb116 lb117 lb118 lb119 lb120 lb0 oz1 oz2 oz3 oz4 oz5 oz6 oz7 oz8 oz9 oz10 oz11 oz12 oz13 oz14 oz15 oz
Submit

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 its 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.

3. Nutrition!

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 quality food as it’s essential to meet their nutritional needs.

If you want your pup to grow to its full potential, then 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 puppies can grow taller.

The concern is then the impact on how the joints align and the subsequent development of orthopedic tissues; desexing should always be considered on a case-by-case basis in discussion with your veterinarian.

Summary

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!