Beagle sizes come down to two AKC varieties: 13-inch beagles under 20 lb, and 15-inch beagles at 20 to 30 lb. Height settles by about 12 months, and weight by 18 months.
Male vs Female Beagle Size
| Trait | Male | Female |
|---|---|---|
| Height at withers | 13–15 in (33–38 cm) | 13–15 in, often slightly shorter |
| Adult weight | 22–30 lb (10–14 kg) | 20–28 lb (9–13 kg) |
| Body length | 22–25 in | 20–24 in |
Beagle Size by Age (8 Weeks to 18 Months)
| Age | 13-inch beagle | 15-inch beagle |
|---|---|---|
| 8 weeks | 3–5 lb | 4–7 lb |
| 3 months | 7–10 lb | 8–12 lb |
| 4 months | 8–11 lb | 9–13 lb |
| 6 months | 12–17 lb | 14–20 lb |
| 8 months | 15–19 lb | 17–23 lb |
| 12 months | 16–20 lb | 20–30 lb |
| 18 months | Under 20 lb | 20–30 lb |
Beagle Height by Age
Most beagles reach about 90% of their adult height at the shoulder by 6 months. Height stops growing at 8 to 12 months, while weight keeps rising for a few more months.
| Age | 13-inch beagle | 15-inch beagle |
|---|---|---|
| 8 weeks | 5–7 in (13–18 cm) | 6–8 in (15–20 cm) |
| 3 months | 7–9 in (18–23 cm) | 8–10 in (20–25 cm) |
| 6 months | 10–12 in (25–30 cm) | 11–14 in (28–36 cm) |
| 9 months | 12–13 in (30–33 cm) | 13–15 in (33–38 cm) |
| 12 months | Up to 13 in (33 cm) | 13–15 in (33–38 cm) |
| 18 months | Up to 13 in (33 cm) | 13–15 in (33–38 cm) |
Beagle Weight Chart
| Variety | Healthy | Possibly underweight | Possibly overweight |
|---|---|---|---|
| 13-inch | 16–20 lb | Under 14 lb | Over 22 lb |
| 15-inch | 20–30 lb | Under 18 lb | Over 32 lb |
13 vs 15 Inch vs Pocket Beagle Size
| Trait | 13-inch beagle | 15-inch beagle |
|---|---|---|
| Height | Up to 13 in (33 cm) | 13–15 in (33–38 cm) |
| Adult weight | Usually under 20 lb | Usually 20–30 lb |
| Build | Lighter frame | Sturdier frame |
Two 13-inch parents can still have a taller puppy. Breeders cannot guarantee a pup’s final variety.
Pocket Beagle vs Standard Beagle
| Trait | Standard beagle | “Pocket” beagle |
|---|---|---|
| Recognition | AKC-recognized varieties | No official standard |
| Height | 13–15 in | Varies, often advertised as smaller |
| Breeding | Purebred | Often crossed with smaller breeds |
| Temperament | Predictable, friendly | Less predictable |
US vs International Beagle Size Standards
The two-variety split is a US rule. Many other kennel clubs allow one beagle size, up to about 16 inches. A beagle may therefore be correct in one country and oversized in another.
Pocket Beagle vs Standard Beagle Size
Beagle Size Compared to Humans
| Measure | Beagle | Human comparison |
|---|---|---|
| Shoulder height | 13–15 in | Below an adult’s knee |
| Weight | 20–30 lb | About a 2- to 3-year-old child |
How old is a beagle in human years? A common estimate is 15 years at age 1 and 24 at age 2. After that, add about 4 to 5 years per dog year.
| Beagle age | Approx. human age |
|---|---|
| 1 year | 15 |
| 2 years | 24 |
| 5 years | 37 |
| 10 years | 60 |
Beagle Size vs Cocker Spaniel and Basset Hound
A beagle is close to a Cocker Spaniel in size but much lighter than a Basset Hound. The Basset is lower to the ground and far heavier.
Beagle Size vs French Bulldog and Labrador
| Breed | Height at shoulder | Typical weight |
|---|---|---|
| Beagle | 13–15 in | 20–30 lb |
| American Cocker Spaniel | 14–15 in | 20–30 lb |
| Basset Hound | Up to 14 in | 40–65 lb |
| French Bulldog | 11–13 in | Under 28 lb |
| Labrador Retriever | 21.5–24.5 in | 55–80 lb |
Beagle Sizes FAQs
How big do beagles get?
Most reach 13 to 15 inches at the shoulder and 20 to 30 lb. Smaller 13-inch beagles are usually under 20 lb.
What is a healthy weight for a beagle?
It depends on height. A 13-inch beagle is usually under 20 lb. A 15-inch beagle is usually 20 to 30 lb
What is the average size of a full-grown beagle?
The average adult beagle is about 14 inches tall and 22 to 25 lb. Males run slightly larger than females.
What is the difference between a 13-inch and 15-inch beagle?
Height and weight. The 13-inch beagle is up to 13 inches and usually under 20 lb. The 15-inch beagle is taller and usually 20 to 30 lb.
When is a beagle fully grown?
Height is near complete at 8 to 12 months. Full weight and muscle arrive around 18 months.
How much should a 6-month-old beagle weigh?
Most weigh 12 to 20 lb, depending on variety. Smaller 13-inch pups sit at the low end.
Are male beagles bigger than females?
Slightly. Males are often 1 to 3 lb heavier and a little longer. Height is nearly the same.
Do pocket beagles really exist?
Not as an official breed. The tiny Tudor-era hounds are gone. Today’s “pocket” beagles are often crossbreeds or small standard beagles.
Are beagles small or medium dogs?
Both, depending on who sorts them. By weight they are small to medium. By build they are compact hounds.
When Do Beagles Stop Growing?
When is a beagle fully grown? Most reach near-adult height by 8 to 12 months. Muscle and chest depth keep filling out until about 18 months. Weight gain after that is usually fat, not growth.
How tall is a beagle in cm?
Most beagles stand 33 to 38 cm tall at the shoulder. A 13-inch beagle is up to 33 cm, and a 15-inch beagle is 33 to 38 cm.