Beagle weight chart by age
In a published growth study, adult Beagle dogs averaged about 38 lb (17.4 kg). Puppies reached 99 percent of that weight at around 42 weeks, which is about 10 months. Use the chart to see what is typical at each age, or enter your puppy's weight for an estimate of the adult size.
Your puppy is at about 55% of its adult weight.
Beagle puppy weight by age
| Age | Pounds | Kilograms | Of adult weight |
|---|---|---|---|
| 8 weeks | 9.2 | 4.2 | 24% |
| 12 weeks | 14.7 | 6.7 | 38% |
| 16 weeks | 21.1 | 9.6 | 55% |
| 20 weeks | 27.1 | 12.3 | 71% |
| 24 weeks | 31.7 | 14.4 | 83% |
| 32 weeks | 36.4 | 16.5 | 95% |
| 40 weeks | 37.8 | 17.2 | 99% |
| 1 year | 38.3 | 17.4 | 100% |
| 15 months | 38.4 | 17.4 | 100% |
| 18 months | 38.4 | 17.4 | 100% |
| Adult average | 38.4 | 17.4 | 100% |
Values are calculated from the growth curve fitted to the Beagle puppies in the study. Males and females were not reported separately here, and individual dogs vary, so treat the numbers as a typical pattern, not a standard.
Beagle growth chart
The dot marks one year. After that, weight changes slowly.
How fast does a Beagle grow?
This breed is in the medium group in our puppy size calculator. Growth was half done at about 15 weeks, which is when the curve is steepest. A Beagle is usually close to its adult weight by 10 months, although the body can keep filling out afterward. For how much to feed along the way, see the puppy feeding chart.
Questions
How much should a Beagle puppy weigh at 8 weeks?
In the study a Beagle weighed about 9.2 lb (4.2 kg) at 8 weeks.
How much should a Beagle puppy weigh at 16 weeks?
About 21.1 lb (9.6 kg), which is roughly 55 percent of the adult weight.
How much does an adult Beagle weigh?
The adult dogs in the study averaged about 38 lb (17.4 kg). Breed standards and individual dogs differ.
When is a Beagle fully grown?
Around 42 weeks (10 months) for weight, according to the growth curve.
Is my Beagle overweight?
Weight alone cannot say. Use the body condition check to look at ribs and waist.
Other breeds
Papillon, Cocker Spaniel, Miniature Schnauzer, Cairn Terrier, English Springer Spaniel, Labrador Retriever, English Mastiff, St. Bernard, Irish Wolfhound, Great Dane, Newfoundland. See also the dog weight chart for all breeds side by side.
Sources
- Hawthorne A.J. et al., "Body-weight changes during growth in puppies of different breeds", Journal of Nutrition, 2004.
Last reviewed 2026-10-26. This page is general information and not veterinary advice.