How Big Will My Border Terrier Get?
Border Terriers are a small breed that typically weigh 5–7 kg (11–15 lbs) at full size. Small breeds typically reach their adult weight around 10–12 months of age.
Border Terrier Size at a Glance
Adult Weight
5–7 kg
11–15 lbs
Adult Height
28–40 cm
11–16 in
Size Category
small
Fully Grown By
10–12 mo
Border Terrier Growth Chart
Border Terrier Weight by Age
Predict Your Border Terrier Puppy's Adult Weight
Enter your puppy's current age and weight for a personalized prediction.
Open Weight CalculatorBorder Terrier Growth & Development
Small breeds typically reach their adult weight around 10–12 months of age. They grow quickly in the first few months and then level off.
A Border Terrier's growth rate is fastest in the first 6 months of life. During this period, proper nutrition and regular vet checkups ensure your puppy stays on a healthy growth trajectory.
Factors that influence your Border Terrier'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 Border Terrier puppy get?
A full-grown Border Terrier typically weighs between 5–7 kg (11–15 lbs). Males tend to be on the larger end of the range while females are usually smaller.
When do Border Terriers stop growing?
Small breeds typically reach their adult weight around 10–12 months of age. They grow quickly in the first few months and then level off. Individual dogs may reach their full size slightly earlier or later depending on genetics, diet, and overall health.
How much should a Border Terrier puppy weigh at 12 weeks?
At 12 weeks, a Border Terrier puppy typically weighs around 1.8–2.4 kg (4–5 lbs), which is roughly 30–40% of their adult weight.
How can I tell if my Border Terrier puppy is the right weight?
Compare your puppy's weight to the growth chart above. A healthy Border Terrier puppy should follow a steady growth curve. If your puppy's weight deviates significantly from the expected range, consult your veterinarian.
Learn More About Border Terriers
Explore the full breed profile, find name ideas, or check ownership costs.