How big will your puppy get?
Free calculators for dog and cat owners. Every number comes from a veterinary source we cite, with the date we checked it. Estimates come with a range, because puppies are not all alike.
Growth: How big will your puppy get?
Food: How much should they eat?
Pet safety: They ate something. What does the dose mean?
Pregnancy: When are the puppies or kittens due?
Age: Pet years in human years.
Breed weight charts
60 breeds, each with the AKC weight range, a growth chart and a calculator. For example:
Why you can check the numbers
The growth charts come from a peer-reviewed study of US veterinary records. Calories use the formula in the Merck Veterinary Manual. The poison thresholds come from the same manual, and each poison page tells you to call a vet or a poison hotline whatever the result says. Breed weights are the American Kennel Club ranges, numbers only. The sources and method page lists everything, with the date each page was read. Facts last checked November 8, 2026.
PuppySizer is published by Mahoje. It is not a veterinary practice and cannot examine your pet.
Not veterinary advice. PuppySizer gives estimates from published sources. It cannot examine your pet. For any health concern, ask your own veterinarian. Read the full disclaimer.