Dog Weight Calculator- Discover Your Puppy’s Adult Weight


How Big Will My Puppy Be?

We all love to speculate. Will our gorgeous little puppy be the size of an elephant, worthy of the Book of World Records? Or will he still fit in our handbag to take to the Mall when he’s done growing? Wonder no more. Here is your solution in one teeny tiny Dog Weight Calculator! Quick Navigation Menu


For the best results when using this calculator

It’s a good idea to weigh small dogs at 12 weeks, medium size dogs at 16 weeks, and large dogs at 20 weeks.


How Big Will My Puppy Get?

1 year
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18 months
21 months
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Group of brown dogs sitting, from taller to smaller against white background


Recent studies say there’s 5 official groups of breed sizes.


14.3 Lb (<6.5 Kg) For eg Chihuahua, Yorkshire Terrier, Maltese terrier, Toy Poodle, Pomeranian, Miniature Pinscher.


14.3 Lb (6.5 kg) to 19.9 Lb (<9 kg) For eg Shih Tzu, Pekingese, Dachshund, Bichon Frise, Rat Terrier, Jack Russell Terrier, Lhasa Apso, Miniature Schnauzer.


19.9 Lb (9 Kg) to 33.1 Lb (<15 Kg) For eg Fox Terrier, Pug, Boston Terrier, American Cocker Spaniel, Beagle.


33.1 Lb (15 Kg) to 66.15 Lb (<30 Kg) For eg Australian Shepherd Dog, Chow Chow, Basset Hound, Siberian Husky, English Bulldog, Pit Bull Type Boxer.


66.15 Lb (30 Kg) to 88.2 Lb (<40 Kg) For eg German Shepherd Dog, Golden Retriever, Labrador Retriever, American Bulldog.


Ever Been the Odd One out?

Latest research found problems with the old categories of breed sizes. In particular, the largest dog families had some misfits. The Giant dogs (Mastiffs, Grand Danes, and Rottweilers) needed to be in their own division, because they grow to over 88.2 Lb (40+ Kg).  So, it just wasn’t possible to create a growth standard for this class. Big dog in red scarf

How to use our graph

  • Find out which of the 5 breed groups your puppy belongs to (check out the color code). Just in case it’s hard to tell, a Great Dane won’t fit into the Toy category.
  • Then, note your puppy’s current weight and age. Follow the color coded curve along, to see what an ideal growth standard should look like for his breed. This will also show a final estimated adult weight.
  • Click the link to see what the growth curves look like at 12 weeks, 6 months, 1 year and 2 years.
  • Come back to our graph, to follow your puppy’s growth milestones along the way!


1. What If my Dog Is a Mixed Breed?

For a more accurate prediction of your dog’s adult weight, try to select your dog’s dominant Breed.

Testing DNA

To find out your dog’s main breed type you can always test DNA. Wisdom Panel Health is a great DNA test for dogs. You collect a cheek swab, which is lab processed. A report is then returned with a genetic analysis. This will go through your dog’s ancestry, predicted weight and physical traits. It will also show up to 150+ possible genetic health conditions.

2. When do Puppies Grow the Most?

Check out our 5 Breed Sizes Graph above. This will give an idea of when the most growth is happening for your puppies’ breed size group. For Toy breeds the period of most rapid growth usually finishes at 11 weeks. Small and Medium breeds will continue this time of fastest growth until 14–16 weeks of age. For Large to Giant breeds this stage can last until past 5 months old.

3. How long does it take for a Puppy to be Full Grown?

Sure, there’s going to be a lot of difference in growth patterns, depending on your puppy’s breed. Very small dogs can reach their maturity at between 8 and 12 months old. Larger breeds can take up to 24 months to reach adult body weight.

4. Do growth stages differ between male and female puppies?

Across the breeds, males are generally larger and heavier (but not always!) Check out this chart from the American Kennel Club for the exact weight differences between males and females.

5. What about the Neuter effect?

Yes it can cause weight gain.

Respected Vet Med Journals say that neutering of dogs can cause weight gain or obesity.

But it may be connected with how old the dog is…

Depending on the age of the dog when the neutering takes place, there can be a difference in growth trends. Getting a dog fixed before the magic age of 37 weeks can cause more rapid weight gain. But neutering after 37 weeks can slow growth down – it’s all those hormones swimming around.

And does it make any difference in the end?

Scientific research has found that a separate growth standard for neutered dogs isn’t needed. There is only a minor difference in growth patterns, especially if a dog is healthy with good Body Condition Scoring (BCS) – see below for more info.

6. Is my Puppy too Fat?? (OR is that just Cute Podge?)

wrinkled dog Check out our Body & Muscle Condition Scoring info coming up. This will you a precise, veterinarian-approved way to find out.


Is my Puppy a Healthy Weight?

Body Condition Scoring (BCS) is a system used by veterinarians. Using sight and touch, you observe where your dog falls on a scale between Underweight to Ideal to Obese.


This is a helpful Body Condition Scoring (BCS) PDF by the WSAVA Global Nutrition Committee to check out.

BCS Categories


  • Ribs and bones raised with no fat cover
  • Bony prominences evident
  • Loss of muscle mass
  • Obvious waist and belly tuck


  • Ribs can be felt but have minimal fat overlay
  • Waist can be seen from above (like an hourglass)
  • Visible belly tuck


  • Varies in extremes from ribs covered with excess fat but still able to be palpated, up to…
  • Ribs not able to be felt due to massive fat deposits.
  • Waist is noticeable but not prominent,up to…
  • Waist being absent.
  • Belly tuck can still be seen, up to…
  • Belly tuck missing, &
  • Conspicuous abdominal bulk.

Muscle Condition Scoring

Muscle loss can be a sign of the presence of serious disease and severe starvation. This can sap strength, immunity and healing abilities. Muscle Condition Scoring (MCS) is also assessed by sight and touch. Dogs can have serious muscle loss while still being overweight. At the same time, they can have a low Body Condition Score (BCS), but also have little muscle loss. SO it is important to check both BCS and MCS to assess if your dog is at an optimal healthy weight.


This is a great Muscle Condition Scoring PDF (by the WSAVA Global Nutrition Committee).


Here’s another method for “guess-timating” your puppy’s predicted adult weight. It involves using a top-super-secret formula for each of the 5 categories of dog breed sizes. Here goes!


  • Weight at 6 weeks x 4 (Then divide that by 16 to get the Lbs).


  • Weight at 6 weeks x 4


  • Weight at 14 weeks x 2.5


  • Weight at 16 weeks x 2


  • Weight at six months x2. Easy peasy.
smart dog wearing glasses with a book

Breed Weights Chart

This is a nifty chart from the American Kennel Club with all the info. It lists the average predicted weight each dog breed is likely to reach, for both male and female.

Will being Fat kill my dog?


Dogs that are at an ideal weight are proven to live 2 years longer than overweight animals. Vet Med Journals also say that obese dogs are at serious risk of many diseases. These can include Cancer, Diabetes and Arthritis etc. So we have to know how to help our dog be in the best of health.

What am I aiming for?

Using Body Condition Score

Do you want to reach or keep an ideal weight for your dog? When you assess your dog’s Body Condition Score (see above) you’ll be able to tell what you’re aiming for. We can then consider the following questions.

How much should I feed my puppy?

  • Consult the feeding guides that come with our dog’s pet food.
  • Be aware of the unique needs that each breed size will have.
  • Think of their particular stages of life.
  • Ask the following questions:

What are my dogs energy needs?

Energy intake that is too low will be harmful for a dog’s health and performance. But energy intake that is too high will mean too much weight gain, and will also put their health at risk.

How active is my dog?

What stage of life is she at? Sleepy puppy yawning
  • Is he a frantic puppy…
  • a settled adult…
  • or a sedentary senior?
There will be a direct connection between your dog’s activity levels and energy needs.

Yes another formula!

One handy formula to measure daily energy needs (for a healthy adult dog) is: 110 multiplied by W multiplied by 0.75 kcal per day (where W = body-weight in kg)

Quality VS Quantity?

Puppies, females with litters, and older dogs will call for a different focus on nutrition. For example, they will need a higher protein intake.


  • Dogs don’t actually have the capacity to take in a lot of carbohydrates. But a balanced amount of protein in the diet benefits muscle tone, skin and coat quality.

What’s going on at home and at meal times?

To get our dog to a healthy weight we can also look at environmental factors and feeding management.

Issues to be aware of:

  • Situations that are stressful for our dog, for eg conflict with other pets
  • Using an exact measurement when serving up food
  • Providing more opportunities for play and exercise
lazy dog on funky couch

Regular Monitoring

So when we’re thinking of our dog’s ideal weight, being aware of the above factors can be helpful. Now it’s just keeping up with regular monitoring of our dog, depending on their needs.

The Tail end

All the best on your journey into an ideal weight and great health for your dog. They’ll thank you (even if it’s just with a big sloppy kiss)! Ebook cover Dog Safety CPR and First Aid


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