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Puppy growth chart

How much of its adult weight a puppy has reached, by age.

Small breeds finish growing early. Giant breeds keep adding weight well into their second year. The chart shows how much of its adult weight a typical puppy has reached by each age, for six adult-weight groups.

Share of adult weight by age

Typical (median) puppy in each adult-weight group. Groups IV to VI keep growing past 12 months. Their curves run on to 18 to 24 months in our data.

Weight by age for a given adult weight

Age	5 lb adult	10 lb adult	20 lb adult	40 lb adult	60 lb adult	80 lb adult	100 lb adult
8 weeks	1.5 lb	2.9 lb	4.8 lb	8.1 lb	11 lb	13 lb	15 lb
12 weeks	2.0 lb	4.0 lb	7.1 lb	12 lb	17 lb	21 lb	24 lb
16 weeks	2.6 lb	5.3 lb	9.7 lb	18 lb	25 lb	31 lb	36 lb
5 months	3.4 lb	6.8 lb	13 lb	25 lb	36 lb	45 lb	54 lb
6 months	3.8 lb	7.6 lb	15 lb	28 lb	42 lb	53 lb	64 lb
8 months	4.3 lb	8.6 lb	17 lb	34 lb	50 lb	65 lb	79 lb
10 months	4.5 lb	9.1 lb	18 lb	36 lb	54 lb	70 lb	86 lb
12 months	4.7 lb	9.4 lb	19 lb	37 lb	56 lb	73 lb	91 lb

Typical weight in pounds. Divide by 2.2 for kilograms. Real puppies vary: the likely range at 12 weeks is roughly 15% either side of these figures.

Want your own puppy's numbers?

The puppy weight calculator turns your puppy's age and weight into an adult-weight estimate and a growth chart. Breed pages show the typical weight by age for each breed.

Our analysis of Salt et al. (2017), PLOS ONE, CC BY 4.0. Methods.