How big will my puppy get?

Type your puppy's age and weight. See its adult size, and the crate, harness and collar to buy.

Age

weeks

Weight

Size group when grown, if you know it

Grown, your puppy will weigh about ? lb

Grown weight?
Crate to buy once?
Harness?
Collar?

General information, not veterinary advice. Breeds, mixes and individual puppies vary; your vet can tell you how your puppy is growing.

How the estimate works

Puppies of the same size group grow in a similar pattern: small dogs finish early, giant dogs keep growing for up to two years. Pupsize knows what share of its adult weight a typical puppy of each group has reached at each age, and divides your puppy's weight by that share.

The younger the puppy, the wider the range, because a puppy at 10 weeks has most of its growing still to do. Weigh again in a few weeks and the range narrows.

Size group	Grown weight	Share of adult weight at 12 weeks	At 6 months	Done growing
Toy	Under 12 lb	About 45%	About 86%	9 to 12 months
Small	12 to 25 lb	About 42%	About 82%	10 to 12 months
Medium	25 to 50 lb	About 36%	About 76%	12 to 15 months
Large	50 to 90 lb	About 30%	About 68%	12 to 18 months
Giant	Over 90 lb	About 22%	About 58%	18 to 24 months

Questions

I don't know my puppy's breed or size group

Choose "Not sure". Pupsize checks each size group and picks the one that fits best. Mixed breeds often land between two groups, so expect a wider range.

Is the "double the weight at 16 weeks" rule right?

It roughly fits small and medium dogs. Large and giant puppies have further to go, which is why Pupsize uses a different growth pattern for each group.

Why buy the crate for the grown dog?

A crate sized for the adult, with a divider panel, lasts the dog's whole life. You move the divider back as your puppy grows instead of buying a second crate.

How big will my puppy get?

How the estimate works

Questions

More answers