Your puppy's age
Adult weight

Your dog's adult weight should fall into this range: 4.32 - 5.28 kg

Your pet's going to be a Toy dog 🐶


These type of dogs can measure up to (30.5 cm) of height, from paw to shoulder.

Dog Size Calculator

Last updated: 03-15-2024

How much will my dog weight?

Our Dog Size Calculator employs a unique equation to estimate how big your puppy will get as it matures. We understand the curiosity of every dog owner about their furry friend's future size, and our calculator provides insightful predictions to ease your concerns.

Understanding the Equation

The equation utilized by our calculator is:

Adult weight = (Puppy weight / Puppy age in weeks) × 52

Significance of 52

You might wonder why we use the number 52 in our equation. Well, it's simple yet profound—52 represents the number of weeks in a year. By incorporating this value, our dog size predictor can estimate your puppy's weight precisely when it reaches one year of age.

Tailored Approach

The inclusion of 52 in our calculation is not arbitrary. On average, dogs transition into adulthood within 12 months, although this timeline may vary slightly depending on the breed. Smaller breeds tend to mature faster, typically within 8 months, while larger breeds may take up to 16 months to reach full maturity.

Weight Categories

Based on the results provided by our puppy weight calculator, we categorize your dog into one of five major breed size groups:

  • Toy dog: Less than 12 lb (Less than 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: Greater than 99 lb (Greater than 44.9 kg)

With this detailed breakdown, you can gain valuable insights into your puppy's potential size and be better prepared for their growth journey.

How big will my dog get in inches/centimeters?

Determining your dog's eventual height is largely influenced by its breed. However, our dog weight chart calculator can help you approximate the maximum height from your dog's paws to its shoulders. Here's a breakdown based on common breed categories:

Toy Dog

Maximum Height: Up to 12 inches (30.5 cm)

Small Dog

Maximum Height: Up to 18 inches (45.7 cm)

Medium Dog

Maximum Height: Up to 25 inches (63.5 cm)

Large Dog

Maximum Height: Up to 30 inches (76.2 cm)

Giant Dog

Maximum Height: Up to 44 inches (111.8 cm)

🙋 Did you know that the world's smallest dog breed, the Chihuahua, can weigh as little as 2 pounds (0.9 kg) and stand as short as 6 inches (15 cm) tall? Despite their small stature, these pint-sized pups are known for their big personalities and boundless energy!

By considering these estimates, you can gain insight into your dog's potential size and better prepare for its care and accommodation needs.

How to use the dog size calculator?

The innovative puppy growth calculator simplifies the process of estimating a dog's adult size. Here's how users can effortlessly utilize this tool:

Providing Puppy Details: Users begin by inputting their puppy's current weight, selecting the preferred weight unit (pounds or kilograms), and specifying their age in either weeks or days.

Calculation Process: Once the details are entered, the dog weight estimator processes the information to predict the puppy's adult weight. The results are displayed as a range, considering various factors that may influence the dog's growth trajectory and final size.

Identifying Breed Type: In addition to the estimated weight range, users receive information regarding the dog's breed type. This includes categorization into one of the following categories: Toy dog, Small dog, Medium dog, Large dog, or Giant dog. Examples of breeds within each category are provided along with a brief description and the maximum height potential.

By following these steps, users can easily access valuable insights into their puppy's growth potential and ensure they receive appropriate care and attention as they mature. 🐾


How big will my puppy grow if he is 9 lbs at 12 weeks? 

  • If your puppy weighs 9 lbs at 12 weeks, it's estimated to reach approximately 39 lbs as an adult.

How do I calculate dog size? 

  • Dog size can be calculated using our dog size calculator by inputting your puppy's current weight and age.

How big is a 30lb dog? 

  • A 30 lb dog is typically categorized as a small to medium-sized breed, with an estimated height range of 15 to 20 inches at the shoulder.

What is the size of a dog's brain?

  • The size of a dog's brain varies depending on the breed, but on average, it's about 0.9% of their body weight.