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Puppy Weight Calculator

Puppy Weight Calculator

Enter the puppy's age and weight and the calculator will instantly estimate the weight when it will be grown to an adult.


Puppy Age


Puppy's Current Weight:


Select Breed


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This free online puppy weight calculator helps you to estimate your puppy’s current weight and shows a prediction about weight when it is grown to an adult. So if you have adopted a puppy and want to know its mass, then using this dog size calculator is your best choice to make.

How Big Will My Puppy Get?

You can determine the size of your pet with the help of the following equation:

$$ \text{Adult Weight} = \frac{\text{Puppy Weight}}{\text{Puppy Age In Weeks}} $$

Apart from this, you can also make use of our free dog weight calculator if you feel a hurdle in measuring the mass of your dog.

Your Dog’s Weight Category:

According to the weight of the puppy measured at various intervals of time, the overall weight range of different dog types is listed in the following table below:

Toy dog < 12 lb / < 5.4 kg
Small dog 12 – 22 lb / 5.4 – 10 kg
Medium dog 22 – 57 lb / 10 – 25.9 kg
Large dog 57 – 99 lb / 25.9 – 44.9 kg
Giant dog >99 lb / >44.9 kg


It may seem a time consuming task to measure the weight of your pet manually. This is why we have designed this free puppy weight calculator so that it becomes no more tough for you to weigh your dog.

Dogs Weight Chart:

How big will my dog get with the passage of time? Well, the answer to this question is not simple. Normally, it takes about a year for a puppy to grow to an adult. But it does not mean that every dog takes the same span of time to become big.

Here we have the following dog weight charts that show an estimated weight gain after a puppy is born to its adult age.

Toy Breeds:

Birth Weight 2.5 oz 3.5 oz 4.5 oz 5.5 oz 6.5 oz
1 week 3.5 oz 6 oz 9 oz 10 oz 12 oz
2 weeks 5 oz 7 oz 12 oz 14 oz 18 oz
4 weeks 8 oz 12 oz 18 oz 22 oz 24 oz
6 weeks 10 oz 16 oz 24 oz 29 oz 34 oz
8 weeks 12 oz 20 oz 29 oz 35 oz 42 oz
10 weeks 14 oz 23 oz 33 oz 40 oz 47 oz
12 weeks 16 oz 27 oz 39 oz 47 oz 55 oz
14 weeks 18 oz 31 oz 45 oz 52 oz 62 oz
16 weeks 20 oz 35 oz 52 oz 59 oz 72 oz
18 weeks 22 oz 38 oz 54 oz 67 oz 78 oz
20 weeks 24 oz 42 oz 58 oz 72 oz 82 oz
22 weeks 26 oz 44 oz 62 oz 76 oz 86 oz
24 weeks 28 oz 46 oz 66 oz 78 oz 90 oz
Adult Weight 1.75 lbs 3.5 lbs 5 lbs 6 lbs 7 lbs


Small Breeds:

Age Weight Weight Weight
8 weeks 2 lbs 3 lbs 4 lbs
10 weeks 2.5 lbs 4 lbs 5.5 lbs
12 weeks 3.5 lbs 5 lbs 6.5 lbs
14 weeks 4 lbs 6 lbs 7.5 lbs
16 weeks 4.5 lbs 7 lbs 9 lbs
5 months 6 lbs 8.5 lbs 12 lbs
6 months 7 lbs 10 lbs 14 lbs
7 months 8 lbs 11.5 lbs 16 lbs
8 months 9 lbs 13.5 lbs 18 lbs
10 months 11 lbs 16.5 lbs 22 lbs
12 months 13 lbs 20 lbs 27 lbs


Medium Breeds:

Age Weight Weight Weight
8 weeks 5 lbs 6 lbs 8 lbs
10 weeks 6.5 lbs 8 lbs 10.5 lbs
12 weeks 8 lbs 10 lbs 12 lbs
14 weeks 9.5 lbs 12 lbs 15 lbs
16 weeks 11 lbs 14 lbs 17 lbs
5 months 14 lbs 18 lbs 23 lbs
6 months 17 lbs 20 lbs 27 lbs
7 months 19 lbs 23 lbs 31 lbs
8 months 22 lbs 27 lbs 36 lbs
10 months 27 lbs 33 lbs 43 lbs
12 months 33 lbs 40 lbs 53 lbs


Large Breeds:

Age Weight Weight Weight
8 weeks 11 lbs 13 lbs 15 lbs
10 weeks 14 lbs 17 lbs 19 lbs
12 weeks 17 lbs 20 lbs 23 lbs
14 weeks 20 lbs 23 lbs 27 lbs
16 weeks 23 lbs 27 lbs 29 lbs
5 months 31 lbs 36 lbs 31 lbs
6 months 36 lbs 43 lbs 42 lbs
7 months 42 lbs 49 lbs 57 lbs
8 months 48 lbs 57 lbs 66 lbs
10 months 60 lbs 64 lbs 82 lbs
12 months 72 lbs 85 lbs 98 lbs
18 months 105 lbs 125 lbs 145 lbs


Here the interesting fact is that you can cross check these values by fetching them in a free puppy weight calculator.

How To Measure My Dog’s Weight?

Let us solve an example that will clear you to know how much will my puppy weigh.


Jack adopts a puppy which is only 3 weeks old. If the current weight of the puppy is about 1kg. What will be its weight when it will grow to an adult dog?


As we know that:

$$ \text{Adult Weight} = \frac{\text{Puppy Weight}}{\text{Puppy Age In Weeks}} $$

$$ \text{Adult Weight} = \frac{1}{3} * 52 $$

$$ \text{Adult Weight} = \frac{52}{3} $$

$$ \text{Adult Weight} = 17.33kg $$

It shows that your puppy will be a medium-sized dog when full-grown. Also, our free puppy weight calculator goes for determining the same results but in short time and attaining far better accuracy.

How Puppy Weight Calculator Works?

Make a use of our free puppy size calculator to better estimate your puppy’s weight. What you need to do is to go through a couple of steps to determine your pet’s current mass. Let’s find how!


  • Write down your puppy’s current age in weeks
  • Enter the weight in the weight menu the same way
  • Select the unit of weight from the next drop-down list
  • Tap the ‘calculate’ button


The free puppy growth calculator determines:

  • Accurate weight of your puppy when it will be full-grown up.
  • Show a detailed-weight chart and highlight your dog’s category in it.


How much should a three months old puppy weigh?

A 3 months mle dog should weigh in the range 20-30lb. For fe,male dogs, this range becomes 20-25lbs. In case you do not know about your puppy’s weight, use a puppy weight calculator to predict it.

Is my puppy underweight?

Your puppy may be underweight if its ribs, vertebrae and bones get highlighted and you could clearly see its narrow waist line. Also, an underweight puppy has a healthy muscle loss around its shoulders and legs. You should use puppy weight predictor to better know about your animal’s weight to maintain its health.

Is it better to get a puppy at 8 weeks or 12 weeks?

Usually, a period of 11 to 12 weeks is considered the optimum time for adopting a puppy. Also, a nine to ten weeks old puppy is also good but exceeding this limit will create a number of problems for you.

What age are puppies most hyper?

If you keep a proper ba;lance in your puppy’s diet, then it will feel energetic and get hyper usually at an average age of 10 weeks. Usually puppies get hyper due to insufficient intake of diet corresponding to their weight. This is why you must weigh your dog using a puppy weight calculator and keep its diet at an equilibrium state.

Should I wake up the puppy to pee?

Yes, you must set an alarm for at least 4 to 5 hours after your puppy goes to bed. In case if it disturbs you to wake you up at midnight, you must keep it outside your home, even knowing nothing of what it is asking for.

Do puppies have a witching hour?

Yes, of course! Most of the puppies have their witching hour in the early morning or late evening.

How long does puppy zoomies last?

Normally, the puppies’ zommies last for less than a few minutes.

How far can puppies see?

A normal dog can see an object clearly at a particular distance of approximately 20 feet or 6 meters.

When can puppies take a bath?

You should allow your puppies to take a bath when they are about four weeks old. Also you should also check for the required weight corresponding to the puppies’ age. In case it gets difficult for you, try using a free puppy calculator to determine weight of the puppy against its age and choose when and how many times you should allow it to take bath.

How do you calm a crazy puppy?

First of all, allow your puppy to be completely relaxed. After that, give them proper attention, some gentle rubs and a chew toy that could make them feel energetic and happy.

How do I know if my dog has worms?

Following are the symptoms that show your dog has worms.

  • Diarrhea
  • Abdominal pain
  • Weight loss
  • Vomiting
  • Poor coat appearance
  • Pot-bellied appearance
  • Lethargy
  • Dehydration


Weighing your puppy on a regular basis makes it possible for you to know about any serious illness. That is why the free puppy weight calculator allows you to keep a score of your dog’s weight on a regular basis. It will help you to maintain a balance in your pet’s diet and keep it healthy and active enough.


From the source of Wikipedia: Puppy nutrition, Energy, Synopsis, Dog breed, Genetic evidence, Breeds