Australian Shepherd Growth Chart: Puppy Weight by Month

Australian Shepherd puppy weight chart (lb)

Adult weight	2 mo	3 mo	4 mo	5 mo	6 mo	8 mo	10 mo	12 mo
Male, 50 lb	9.6	17	24	30	35	42	46	48
Male, 65 lb	12	22	31	38	46	54	60	63
Female, 40 lb	7.7	13	19	24	28	33	37	39
Female, 55 lb	11	18	26	33	38	46	51	53

Australian Shepherd puppy weight chart (kg)

Adult weight	2 mo	3 mo	4 mo	5 mo	6 mo	8 mo	10 mo	12 mo
Male, 23 kg	4.3	7.5	11	13	16	19	21	22
Male, 29 kg	5.7	9.8	14	17	21	25	27	29
Female, 18 kg	3.5	6.0	8.5	11	13	15	17	18
Female, 25 kg	4.8	8.3	12	15	17	21	23	24

Typical weights by month. Individual puppies often sit 10–15% above or below these numbers. Last reviewed October 7, 2026.

How big does a Australian Shepherd get?

According to the American Kennel Club's breed profile for the Australian Shepherd, adults weigh: male 50–65 lb; female 40–55 lb. Life expectancy is 12–15 years.

	Weight	Height
Male	50–65 lb	20–23 in
Female	40–55 lb	18–21 in

When does a Australian Shepherd stop growing?

Australian Shepherds grow like other medium-sized dogs: they are close to adult weight at around 13 months. At 6 months a typical Australian Shepherd puppy has reached about 70% of its adult weight.

To estimate your own puppy's adult weight from its current weight and age, use the puppy weight calculator and choose "Medium" as the expected adult size.

How the chart is made

The adult weights come from the AKC breed profile. The weight at each month is estimated with our medium-breed growth curve, which gives the share of adult weight a typical puppy of that size reaches at each age. The curves are simplified from published research on dog growth, including the growth standard charts by Salt and colleagues (PLOS ONE, 2017).

If your puppy is well below or above the chart, stops gaining weight, or looks very thin or round, ask your vet to check its body condition.

Questions people ask

How much should a 3-month-old Australian Shepherd weigh?

Typically about 13–22 lb, depending on sex and how big the dog will be as an adult.

How much should a 6-month-old Australian Shepherd weigh?

Typically about 28–46 lb, roughly 70% of adult weight.

When is a Australian Shepherd full grown?

Most Australian Shepherds are close to their adult weight at around 13 months, though many keep filling out with muscle for a while after that.

How big will my Australian Shepherd get?

The AKC lists adult weights of male 50–65 lb; female 40–55 lb. Your puppy's parents are a good guide to where in that range it will end up.

Australian Shepherd growth chart