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Brittany puppy weight calculator

Enter your Brittany puppy's age and weight to estimate its adult weight.

Sex

Brittany weight by age

Typical weight by age for a Brittany with an adult weight of about 35 lb (male) or 35 lb (female). The range shows where most puppies fall.

AgeMaleFemale
2 months7.7 lbrange 5.3–11 lb7.7 lbrange 5.3–11 lb
3 months12 lbrange 8.7–16 lb12 lbrange 8.7–16 lb
4 months17 lbrange 13–21 lb17 lbrange 13–21 lb
5 months22 lbrange 18–26 lb22 lbrange 18–26 lb
6 months25 lbrange 20–30 lb25 lbrange 20–30 lb
8 months30 lbrange 25–34 lb30 lbrange 25–34 lb
10 months32 lbrange 27–35 lb32 lbrange 27–35 lb
12 months33 lbrange 29–36 lb33 lbrange 29–36 lb

Divide pounds by 2.2 for kilograms.

Adult weight

AKC breed page: 30-40 pounds. The calculator uses about 35 lb for males and 35 lb for females as the typical adult weight.

Common questions

How much should a Brittany puppy weigh at 3 months?

A typical male Brittany weighs about 12 lb at 3 months (most between 8.7 and 16 lb). A typical female weighs about 12 lb (most between 8.7 and 16 lb).

How much should a Brittany puppy weigh at 6 months?

A typical male Brittany weighs about 25 lb at 6 months (most between 20 and 30 lb). A typical female weighs about 25 lb (most between 20 and 30 lb).

How much does a Brittany weigh at 1 year?

A typical male Brittany weighs about 33 lb at 12 months (most between 29 and 36 lb). A typical female weighs about 33 lb (most between 29 and 36 lb).

When does a Brittany stop gaining weight?

The typical Brittany puppy reaches about 90% of its adult weight around 10 months and 95% around 15 months. Large and giant breeds fill out for longer than small ones.

How accurate is the Brittany weight calculator?

Across our test dogs the typical miss was about 11% of adult weight, smaller for older puppies. Your puppy can land outside the range. See the methods page.

Other breeds

Weight standard: AKC breed page. Growth curves: our analysis of open data from Salt et al. (2017), CC BY 4.0. An estimate, not veterinary advice. Methods.