How Big Will My Boxer Get?
Boxers are a large breed that typically weigh 25–32 kg (55–71 lbs) at full size. Large breeds take longer to mature, typically reaching their adult weight around 14–18 months.
Boxer Size at a Glance
Adult Weight
25–32 kg
55–71 lbs
Adult Height
53–63 cm
21–25 in
Size Category
large
Fully Grown By
14–18 mo
Boxer Growth Chart
Boxer Weight by Age
Predict Your Boxer Puppy's Adult Weight
Enter your puppy's current age and weight for a personalized prediction.
Open Weight CalculatorBoxer Growth & Development
Large breeds take longer to mature, typically reaching their adult weight around 14–18 months. They grow rapidly between 3–6 months.
A Boxer's growth rate is fastest in the first 6 months of life. For larger breeds like the Boxer, it's important not to over-feed during the growth phase, as rapid weight gain can put stress on developing joints and bones.
Factors that influence your Boxer's adult size include genetics (parent size), nutrition quality, spay/neuter timing, and overall health. Males typically weigh 10–20% more than females.
Frequently Asked Questions
How big will my Boxer puppy get?
A full-grown Boxer typically weighs between 25–32 kg (55–71 lbs). Males tend to be on the larger end of the range while females are usually smaller.
When do Boxers stop growing?
Large breeds take longer to mature, typically reaching their adult weight around 14–18 months. They grow rapidly between 3–6 months. Individual dogs may reach their full size slightly earlier or later depending on genetics, diet, and overall health.
How much should a Boxer puppy weigh at 12 weeks?
At 12 weeks, a Boxer puppy typically weighs around 8.5–11.4 kg (19–25 lbs), which is roughly 30–40% of their adult weight.
How can I tell if my Boxer puppy is the right weight?
Compare your puppy's weight to the growth chart above. A healthy Boxer puppy should follow a steady growth curve. If your puppy's weight deviates significantly from the expected range, consult your veterinarian.
Learn More About Boxers
Explore the full breed profile, find name ideas, or check ownership costs.