Free pet calculators. No sign-up.

How big will your puppy get?

Move two sliders. See your puppy's likely adult weight and a month-by-month growth chart.

  • Free to use
  • No account
  • Every figure sourced
dogs behind the curves
339,119dogs behind the curves
breed growth charts
24breed growth charts
figures, every one sourced
107figures, every one sourced

Puppy weight calculator

Expected adult size

Likely adult weight

44lb

8 in 10 land between
35 to 56 lb
Fully grown
around 11 months
2Now4681012Adult
Age in monthsSo farProjected

Estimate only. Mixed breeds can land outside the range.

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24 breeds

Growth charts by breed

The same calculator, set up for your breed.

See all 24 breeds

Where the numbers come from

Every figure here has a source you can check.

These are estimates, so the honest thing is to show the working. Each number is stored next to its source in the code, and that source is printed at the bottom of the page that uses it. Where we could not find one, the site says so instead of guessing.

Read how we calculate

  • 15 million

    weight records in the open dataset behind the growth curves

  • 339,119

    dogs followed from puppy to adult to build those curves

  • Merck

    Veterinary Manual for every pregnancy and heat cycle figure

  • AKC first

    kennel club breed standards for adult weight and height

Results are estimates for planning. For health questions, ask your vet.