Dog Growth Chart & Weight Calculator
Wondering if your puppy is growing on track — or how big they’ll actually get? Pick your dog’s breed below to see its typical weight curve from 2 months to full adulthood. Add your puppy’s current age and weight, and the calculator will show how they compare to the average and estimate their likely adult size.
How big will your puppy get?
Pick a breed to see its typical growth curve, or add your puppy's current age and weight to check how they're tracking against the average.
How This Calculator Works
Every breed grows at a different pace. Small and toy breeds usually hit their adult weight by 9–12 months, while large and giant breeds keep filling out until 18–24 months. Our calculator uses each breed’s typical adult weight range combined with standard growth-rate patterns for its size class, so you get a realistic curve rather than a one-size-fits-all guess. Enter your puppy’s current age and weight to see exactly where they fall on that curve, plus a rough projection of their adult size.
Understanding Size Categories
Toy & Small Breeds
Typically reach adult weight by 9–12 months. Growth is fast and steady in the first few months, then levels off early.
Medium & Large Breeds
Usually mature between 12–18 months. Expect a longer growth window with steady weight gain through the first year.
Giant Breeds
Can keep growing until 18–24 months. These breeds pack on weight gradually and take the longest to reach full adult size.
Frequently Asked Questions
Q: How accurate is this weight calculator?
A: It’s an estimate based on breed-standard weight ranges and typical growth patterns for your dog’s size class — not an exact prediction. Genetics, diet, and individual variation all play a role, so treat the result as a helpful guide rather than a guarantee.
Q: My puppy is bigger or smaller than the average — should I be worried?
A: A little variation from the average is completely normal. If your puppy is significantly above or below the expected range, or growth suddenly stalls or spikes, it’s worth mentioning to your vet at their next checkup.
Q: When do puppies stop growing?
A: It depends on size: toy and small breeds are usually done growing by 9–12 months, medium and large breeds by 12–18 months, and giant breeds can keep filling out until 18–24 months.
Q: Does this work for mixed-breed dogs?
A: Pick whichever breed your dog most closely resembles in size, or use their current size class as a rough guide — mixed breeds often land between two curves.
Curious About a Specific Breed?
Browse our full breed library for detailed profiles on temperament, care needs, and more.
