How big will my puppy get? This is a question that every dog owner has. Whether you decide on a purebred dog or a mixed breed, there is a lot of variation in size, even in the same litter dogs!
As your puppy approaches about the adult size you can plan ahead for the dog crate, collar, fencing in your yard, and other future needs.
We will tell you some of the factors that affect puppy growth as well as the formulas you can use to estimate your puppy’s adult weight and height.
But please keep in mind that these are all rough estimates and not always accurate. Ends with a dog much bigger or smaller than you might expect!
How big will my puppy Get?
Generally, an adult average-sized dog at 12 months of age weighs 2-1 / 2 times at 14 weeks or twice at four months of age.
But these are the most generalized estimates that do not take into account some common factors:
- Breed: Growth rates and full adult size of dogs vary depending on the breed. See our section below on breaking down race sizes.
- Parents: If you are lucky enough to see your puppy parents, you can get a very good idea of how big your puppy will be based on their sizes.
- Gender: Like humans, male puppies are generally larger than females.
- Nutrition / Spraying: Puppies may be slightly taller and slightly taller than average as adults if they are quickly nourished or pre-sprayed. Why? This process can alter the chemical signals to some extent, which tells the body to stop growing in its normal way.
If your Great Dane puppy is growing faster than the Japanese Knotweed, you can expect him to stop growing soon.
However, the bigger the dog breed, the longer they will grow for months … that really makes sense. So first think about whether your puppy is a toy, small, medium, large, or large breed.
Those at the pocket-size end of the scale usually reach adult size by the age of six months, while a large-sized large dog grows to 18-24 months.
Estimating the adult size of your puppy
When you have a purebred puppy you will be underestimated because you will have a parent guide. Hopefully, you looked at the mother dog, so she had an idea about her size. But what if you rescue a puppy and don’t see his parents?
Most foster parents store puppies the size of afoot. It is said that a young man with big feet has a lot of growth! This is true to some extent but does not set more store on it.
The feet are more likely to grow than the rest of the body, which will soon be caught.
Therefore, the large paws on the puppy (if they do not grow anymore) may turn into small paws on the adult.
What can you use to estimate your puppy size?
Here are some rules for estimating your puppy’s adult weight.
First, if your dog has puppies, the average newborn will double their weight by one week of age. After that, their weight gain increases by 5 – 10% per day.
But by six weeks of age, small and large dogs gain weight very differently. Smaller species get 5 oz. In a week, large species grow almost six times at 2lb 5 oz. A week.
Toys and small breeds
The first insight into their final adult weight comes again at six weeks of age. Take their six-week weight, double it, and then double it again. For example, a 1 pound puppy at six weeks of age weighs 4lb as an adult.
Medium and large breeds
You have to wait a little longer for these guys because they’re 14 weeks old you are used as a predictor.
To work you double the puppy’s 14 weeks old age, and then add half of the original 14-week weight.
For example, at 20 weeks a 20lb puppy is estimated to weigh 20 + 20 + 10, up to 50lb
For these dogs, another weight landmark is the six-month point. The dog weighs two-thirds of his estimated adult weight. However, large dogs reach only half their adult weight at this age.
Adult size is another way to work
Maybe you adopted the puppy late and did not know their six-week weight. What to do?
Well, try this alternative calculation to find out what to expect.
Although the formula for the toy is the same for large dogs, their age will be different when you measure their weight.
First of all the formula:
Consider the weight of the puppy in pounds (at a certain age) and divide it by his age in weeks, then multiply that number by 52 (number of weeks in a year).
This should estimate your puppy’s ideal adult weight.
Smaller breeds weigh up to 12 weeks
Medium-sized breeds weigh up to 16 weeks
Larger breed puppies weigh up to 20 weeks
Well, suppose a medium-sized dog weighs 8 pounds. In 16 weeks. How much does he weigh as an adult?
- 8 (lbs.) Divided by 16 (weeks) is equal to 0.5
- Multiply 0.5 by 52 i.e (0.5 x 52) = 26 lbs for Adult weight assessment.
- Let’s try again with a small dog that weighs 3 pounds. At 12 weeks of age
- 3 divided by 12 = 0.25
- 0.25 x 52 = 13 lbs.
Estimate dog weight by breed size
Quote Form Widget As we mentioned above, dog growth rate varies by breed. So there are different formulas for estimating their adult weight by normal breed size.
Dog breeds are generally divided into five categories in size, but keep in mind that there is some overlap with dogs at the bottom and top of each category.
- Toy (up to 12 lbs)
- Small (12-25 lbs)
- Medium (25-50 lbs)
- Large (50-100 lbs)
- Giant (over 100 pounds)
How puppy weight calculator works
Most puppy weight calculators do not take into account the typical growth curve that dogs (and all living things related to that subject) have. Normal puppy weight calculators assume that the dog will simply grow up to 1 year of age, at which age he will abruptly stop.
The truth is very different. Fortunately, there are many scientific studies that explore in detail how dogs grow.
Our growth and weight calculator are based on the following scientific publications:
- Growth standard charts for monitoring body weight in dogs of different sizes
- This study is an analysis of the growth and age data of over 6 million dogs.
- There will be a huge difference in the body-weight during growth in puppies for different breeds
- Comparison of Factors Affecting Body Weight at Different Ages in Nonlinear Growth Models and Toy Poodles
- Body size, breeding, and lifespan in pet dogs
As far as we know, it is the only weight estimating calculator based on specific scientific growth data on individual breeds and the most accurate puppy weight calculator on the Internet.
At what age do puppies grow the most?
Puppies grow rapidly in the first week of life. They usually double their birth weight by 7 days of age. Although they continue to grow rapidly afterward, they do slow down a bit.
The same is true for all other species: the growth rate is highest at birth. Because they need to gain weight quickly to stay strong and healthy.
If the puppy or whole litter is struggling to gain weight quickly in the first few days, it is important to take them to a veterinarian. The mother may not produce enough milk, and the puppies may need some bottle feeding in addition to nursing.
At times, puppies may have congenital anomalies that can lead to slow weight gain.
At what age does a dog reach full height?
Small breed dogs reach full height in just a year. Large dog breeds grow in height until about 16 months of age. But even after that age, they continue to “fill up”. Their breasts may become wider (especially if they have not yet been sprayed or nourished) and they become more muscular.
If you have a long-coated breed, you may notice that your dog’s coat grows and becomes bulkier. It can give your dog a significantly growing look, but it’s all soft!