View all Medium breed growth charts
Beagle Growth Chart
Beagles are sturdy scent hounds with a food-driven appetite and steady growth through the first year. Most reach adult weight between 12 and 15 months. Regular weigh-ins help distinguish healthy growth from excess weight on a compact frame.
View weight chart (lb & kg)Calculate Your Beagle Puppy's Adult Weight
Enter your Beagle puppy's age and current weight for an estimated adult weight range.
Beagle weight by age
Typical male and female puppy weight ranges by age, available in lb and kg. Individual puppies may vary.
Most Beagle puppies approach adult weight around 14 months, although individuals may finish earlier or later.
These estimated ranges combine the breed's adult weights with a size-based growth curve. They are not measured breed-specific percentiles or health targets. Month labels are rounded approximations; use the week values for each row. How these weight ranges are calculated
Beagle Growth Stages
Understanding the typical growth stages helps you know what to expect as your Beagle puppy grows.
Neonatal
0–2 weeksPuppies are born with eyes and ears closed, relying entirely on their mother. Rapid weight gain occurs during this period.
Socialization
3–12 weeksEyes and ears open. Puppies begin to explore, play, and learn social behaviors. This is a critical period for development.
Juvenile
3–6 monthsRapid growth continues. Puppies become more independent, start teething, and develop coordination.
Adolescent
6–12 monthsGrowth rate begins to slow. Puppies reach sexual maturity and may test boundaries. Muscle mass develops.
Young Adult
12–15 monthsGrowth is nearly complete. Your puppy is filling out and approaching adult proportions.
Adult
15+ monthsYour puppy has reached their full adult size. Weight should remain relatively stable with proper nutrition.
Beagle FAQ
How much will my Beagle puppy weigh as an adult?
As a medium breed, Beagles usually reach an estimated adult range of 20–30 lb overall. Sex matters: males typically finish around 20–30 lb and females around 20–30 lb. Track weekly weigh-ins to see whether your puppy trends toward the lower or upper end.
At what age is a Beagle fully grown?
Beagles are medium dogs that typically reach most of their adult weight between 12 and 15 months. Beagles gain steadily through the first year and typically settle by 12–15 months. Slight muscle or coat fill may continue briefly after height stabilizes, so weekly weigh-ins give a clearer picture than a single reading.
How accurate is a Beagle puppy weight chart?
Chart accuracy for Beagles depends on individual build. Differences in 13-inch versus 15-inch height varieties can shift results, since food-driven appetites can blur growth versus excess weight. Weekly weigh-ins on the same scale and time of day typically improve estimate quality over time.
How much should a Beagle puppy weigh at 12 weeks?
Check the 12-week row in the weight-by-age table above for the estimated male and female ranges. If your puppy falls well outside that band, re-check the scale, the lb/kg setting, and the age entry first — a single off reading is more common than a truly unusual puppy.
Do male and female Beagles grow differently?
Not much — both sexes typically finish between 20 and 30 lb, with males slightly heavier. The 13-inch and 15-inch varieties differ more by height than by weight.
Is my Beagle puppy underweight or overweight?
Beagles are famously food-motivated, so weight creep is common. Feel the ribs and look for a waist — if both are buried, portions need a trim. Your vet can assess body condition in person.
How much should I feed my Beagle puppy?
Feed measured meals and be strict about treats — Beagles will eat far past full. Food puzzles slow them down. Ask your vet about portions for your puppy's age.