Boxer Puppy Weight Calculator

Calculate the adult weight for your Boxer. Just type your puppy’s current weight and age, and see how big your puppy gets.

Boxer Breed Profile and Growth Guide

Breed Overview

The Boxer is a strong, medium-to-large breed known for its boundless energy, affectionate nature, and distinctive square-shaped muzzle. Originating in Germany during the late 19th century, Boxers were developed by crossing the Bullenbeisser (a now-extinct German hunting dog) with Mastiff-type breeds. Initially used for hunting and protection, today’s Boxer is a loving family dog, as well as a capable working or service companion.

Boxers are smart, playful, and loyal. Their high intelligence and desire to please make them trainable, although they can also be stubborn without consistent guidance. Known for their clownish antics and tight bond with their families, Boxers thrive on interaction and are well-suited to active households.

Size category: Large
As a large breed, Boxers typically weigh between 50 and 80 pounds as adults. Tracking growth is essential during puppyhood to ensure proper joint and bone development. Rapid or unbalanced growth in large breeds like the Boxer can lead to health issues such as hip dysplasia or joint instability.

Boxer Growth Chart & Weight Ranges

The chart below shows average Boxer puppy weight ranges by age and gender:

Age	Male Weight Range (lbs)	Female Weight Range (lbs)
4 weeks	5 – 7	4 – 6
8 weeks	15 – 20	13 – 18
3 months	25 – 30	22 – 28
4 months	30 – 38	27 – 34
6 months	40 – 52	36 – 48
9 months	50 – 65	45 – 58
12 months	55 – 70	50 – 65
18 months	60 – 80	55 – 70

Note: Males typically weigh 5–10 lbs more than females at full maturity.

How Much Bigger Will My Boxer Puppy Get?

Boxers grow rapidly in the first 6–8 months and tend to reach their adult height by 12 months, although they may continue to fill out and gain muscle mass until 18–24 months.

Most Boxer puppies reach:

• 50% of their adult weight by around 4 months
• 75% by 6–7 months
• Nearly full adult size by 12–15 months

Rule of Thumb:
To estimate your Boxer’s adult weight, double their weight at 16 weeks. This offers a close approximation for most puppies.

Exception:
Although Boxers aren’t giant breeds, they may continue to gain muscle and mature physically up to 24 months, especially males.

Boxer Growth Tips

Nutrition

• Feed a large-breed puppy food with controlled calcium and phosphorus levels to support slow, steady growth.
• Offer 3–4 meals per day until 6 months old, then switch to 2 meals daily.
• Avoid overfeeding to prevent joint strain and obesity—Boxers are muscular, but not bulky.

Exercise

• Boxers are high-energy dogs that require regular, moderate exercise, but care must be taken while they’re growing:
  • Avoid long runs, excessive jumping, or hard surfaces during intense play.
  • Daily walks, short play sessions, and training games are best for developing coordination and focus.

Health Watch

• Hip dysplasia, cardiomyopathy, and degenerative myelopathy are some inherited conditions in the breed—regular vet checkups help monitor early signs.
• Boxers are prone to bloat (gastric torsion), especially as they grow, feed smaller, more frequent meals, and avoid exercise directly before or after eating.
• Keep an eye on growth plate injuries, which can result from overexertion during the growth phase.