A full-grown Beagle stands 13 to 15 inches tall and weighs 20 to 30 pounds. Smaller Beagles stay under 20 pounds. Taller ones usually land between 20 and 30.
This guide covers Beagle height and weight, a growth chart by age, and how a Beagle’s size compares to people, other dogs and animals.
Full-Grown Beagle Size
Average Beagle Height and Weight
An adult Beagle measures 13 to 15 inches at the shoulder (33 to 38 cm). Most weigh 20 to 30 pounds (9 to 14 kg).
Beagles are a small-to-medium hound breed. They have a sturdy, muscular build that looks like a miniature foxhound.
13-Inch vs. 15-Inch Beagle Size
| Variety | Height | Typical Weight |
|---|---|---|
| Smaller Beagle | 13 inches and under | Under 20 lb |
| Larger Beagle | Over 13 to 15 inches | 20 to 30 lb |
Measure from the floor to the top of the shoulder blades while your dog stands straight.
Height matters because it sets a healthy weight. A 30-pound Beagle can be fit if tall. A small Beagle at 30 pounds is likely overweight.
Male vs. Female Beagle Size
Male Beagles are slightly bigger than females, but the gap is small. The ranges overlap a lot.
Frame and genetics count more than sex. A tall female can outweigh a small male.
Beagle Growth Chart by Age
Beagle puppies weigh 5 to 10 ounces at birth. They grow fastest in the first six months.
| Age | Smaller Beagle (13″ & under) | Larger Beagle (13–15″) |
|---|---|---|
| 8 weeks | 3–5 lb | 4–7 lb |
| 3 months | 6–10 lb | 8–12 lb |
| 4 months | 8–11 lb | 9–13 lb |
| 6 months | 12–17 lb | 14–20 lb |
| 9 months | 15–20 lb | 18–26 lb |
| 12 months | 15–20 lb | 20–30 lb |
| 18 months | Under 20 lb | 20–30 lb |
Puppies grow in spurts. Look at the trend over several weeks, not one weigh-in.
How Big Is a 6-Month-Old Beagle?
A 6-month-old Beagle usually weighs 12 to 20 pounds and stands about 10 to 13 inches tall.
At this age, your pup is close to half its adult weight. Growth slows after this point.
When Do Beagles Stop Growing?
Beagles stop growing taller at about 8 to 12 months. They reach their full adult weight at about 18 months.
After 12 months, most of the change is muscle and chest filling out. Any big gain after 18 months is usually fat, not growth.
What Changes How Big a Beagle Gets?
- Genetics: Parent size is the best clue. Ask your breeder how tall and heavy the parents are.
- Diet: Overfeeding adds fat, not height.
- Exercise: Daily activity builds lean muscle.
- Spay or neuter timing: Very early neutering can lengthen bone growth. Ask your vet about the best age.
Why Is My Beagle Small?
A small Beagle is often just a small-line Beagle. If the parents were small, your pup likely will be too.
Intestinal worms can also slow growth. They are common in puppies and treatable. A vet visit will rule them out.
A puppy sold as a purebred may also be mixed with a smaller breed. A DNA test can confirm this.
How Big Is a Beagle Compared to Humans, Other Dogs and Animals?
Beagle Size Compared to Humans
A Beagle stands about shin height on an adult. At 20 to 30 pounds, it weighs about the same as a one- to two-year-old child.
That makes it easy to lift, but not tiny. Lift with support under the chest and hips.
Beagle Size vs. Other Dog Breeds
| Breed | Height | Weight |
|---|---|---|
| Beagle | 13–15 in | 20–30 lb |
| Pug | 10–13 in | 14–18 lb |
| French Bulldog | 11–13 in | Under 28 lb |
| Pembroke Welsh Corgi | 10–12 in | Up to 30 lb |
| Cocker Spaniel | 13.5–15.5 in | 24–30 lb |
| Basset Hound | 11–15 in | 40–65 lb |
| Labrador Retriever | 21.5–24.5 in | 55–80 lb |
A Beagle is taller than a Pug or Frenchie. It is far lighter than a Basset Hound or a Lab.
Beagle mixes vary. A Beagle crossed with a larger breed, like a German Shepherd, can grow much bigger.
Beagle Size vs. Cats and Other Animals
An average house cat weighs about 8 to 10 pounds. A Beagle is roughly two to three times heavier.
The Beagle’s look is similar to a small fox, and it was bred to chase rabbits and hares. Old stories also mention “pocket Beagles” of only 8 to 9 inches tall. Today’s Beagle is much bigger.
Beagle Size FAQs
How big do Beagles get fully grown?
Full-grown Beagles reach 13 to 15 inches tall and weigh 20 to 30 pounds. Smaller ones stay under 20 pounds.
How much should a 6-month-old Beagle weigh?
Most weigh 12 to 20 pounds. Smaller lines sit at the low end, and taller lines at the high end.
At what age is a Beagle fully grown?
Beagles reach full height around 8 to 12 months. They hit full adult weight around 18 months.
Is a Beagle a small or medium dog?
A Beagle is a small-to-medium breed. It is larger than a Pug and smaller than a Basset Hound.
Is a 30-pound Beagle overweight?
Not always. A tall 15-inch Beagle with visible ribs and a waist can be healthy at 30 pounds. A small Beagle at that weight is likely overweight.
Do male Beagles get bigger than females?
Yes, but only slightly. Males run a little heavier, and the size ranges overlap a lot.
John Dale is an animal size researcher and writer focused on measurements, dimensions, and size comparisons. He creates clear, practical content covering height, length, weight, and other key measurements in both U.S. and metric units.
