A beagle puppy weighs about 3–7 lb at 8 weeks, 7–11 lb at 12 weeks, and 8–12 lb at 16 weeks. Adults reach under 20 lb (13-inch) or 20–30 lb (15-inch).
Beagle Weight Chart by Week (1 to 16)
| Week | 13-inch Beagle (lb / kg) | 15-inch Beagle (lb / kg) | Expected Weekly Gain |
|---|---|---|---|
| Week 1 | 0.6–1.0 lb (0.3–0.5 kg) | 0.7–1.2 lb (0.3–0.5 kg) | +0.3–0.6 lb |
| Week 2 | 1.0–1.5 lb (0.5–0.7 kg) | 1.1–1.8 lb (0.5–0.8 kg) | +0.4–0.6 lb |
| Week 3 | 1.5–2.3 lb (0.7–1.0 kg) | 1.7–2.7 lb (0.8–1.2 kg) | +0.5–0.9 lb |
| Week 4 | 2.0–3.0 lb (0.9–1.4 kg) | 3.0–4.0 lb (1.4–1.8 kg) | +0.5–1.3 lb |
| Week 5 | 2.3–3.5 lb (1.0–1.6 kg) | 3.3–4.8 lb (1.5–2.2 kg) | +0.3–0.8 lb |
| Week 6 | 2.5–4.0 lb (1.1–1.8 kg) | 3.5–5.5 lb (1.6–2.5 kg) | +0.2–0.7 lb |
| Week 7 | 2.8–4.5 lb (1.3–2.0 kg) | 3.8–6.3 lb (1.7–2.9 kg) | +0.3–0.8 lb |
| Week 8 | 3.0–5.0 lb (1.4–2.3 kg) | 4.0–7.0 lb (1.8–3.2 kg) | +0.2–0.7 lb |
| Week 9 | 4.0–6.3 lb (1.8–2.9 kg) | 5.0–8.0 lb (2.3–3.6 kg) | +1.0–1.3 lb |
| Week 10 | 5.0–7.5 lb (2.3–3.4 kg) | 6.0–9.0 lb (2.7–4.1 kg) | +1.0–1.2 lb |
| Week 11 | 6.0–8.8 lb (2.7–4.0 kg) | 7.0–10.0 lb (3.2–4.5 kg) | +1.0–1.3 lb |
| Week 12 | 7.0–10.0 lb (3.2–4.5 kg) | 8.0–11.0 lb (3.6–5.0 kg) | +1.0–1.2 lb |
| Week 13 | 7.3–10.3 lb (3.3–4.7 kg) | 8.3–11.3 lb (3.8–5.1 kg) | +0.3 lb |
| Week 14 | 7.5–10.5 lb (3.4–4.8 kg) | 8.5–11.5 lb (3.9–5.2 kg) | +0.2 lb |
| Week 15 | 7.8–10.8 lb (3.5–4.9 kg) | 8.8–11.8 lb (4.0–5.4 kg) | +0.3 lb |
| Week 16 | 8.0–11.0 lb (3.6–5.0 kg) | 9.0–12.0 lb (4.1–5.4 kg) | +0.2 lb |
These are estimates. The AKC does not publish weekly weights.
Beagle Weight and Height Chart (4 to 12 Months)
| Age | 13-inch Beagle Weight | 15-inch Beagle Weight | Height |
|---|---|---|---|
| 4 Months | 8–11 lb (3.6–5.0 kg) | 9–12 lb (4.1–5.4 kg) | 8–11 in |
| 6 Months | 12–17 lb (5.4–7.7 kg) | 14–18 lb (6.4–8.2 kg) | 9–13 in |
| 8 Months | 16–20 lb (7.3–9.1 kg) | 18–22 lb (8.2–10.0 kg) | 10–13 in |
| 10 Months | 16–20 lb (7.3–9.1 kg) | 20–28 lb (9.1–12.7 kg) | 11–14 in |
| 12 Months | 16–20 lb (7.3–9.1 kg) | 20–30 lb (9.1–13.6 kg) | 12–15 in |
Beagle Growth Stages
- Newborn (0–2 weeks): Eyes and ears are closed. The pup relies on its mother.
- 2–6 weeks: Eyes and ears open, and baby teeth come in.
- 8–16 weeks: This is the fastest growth phase. Most pups go home and start house training.
- 4–6 months: Permanent teeth replace baby teeth. The pup reaches about half its adult size.
- 6–12 months: Growth slows. Adolescence brings extra energy and boundary testing.
- 12–18 months: Muscle and chest fill out as the beagle reaches full maturity.
How Much Should a Beagle Puppy Gain Each Week?
On this chart, about 1 lb a week from weeks 8 to 12. From weeks 13 to 16, gain drops to about 0.2–0.3 lb a week.
Growth comes in growth spurts, so one flat week means little. Compare the beagle growth rate over 3–4 weeks instead.
When Do Beagles Stop Growing?
Most beagles reach adult height between 8 and 12 months. They reach adult weight between 12 and 18 months. See the full beagle size by age chart for each month.
13-Inch vs 15-Inch Beagle Growth
The AKC splits beagles by height. A 13-inch beagle stands up to 13 in and usually stays under 20 lb. A 15-inch beagle stands over 13 in, up to 15 in, and usually weighs 20–30 lb.
The size gap means 30 lb can be healthy for a 15-inch beagle but heavy for a 13-inch one. Read more in 13-inch vs 15-inch beagles.
Pocket Beagle vs Standard Beagle Size
Beagle Growth Chart FAQs
How big is an 8 week old beagle puppy?
An 8-week-old beagle is about 5–8 inches tall and weighs 3–7 lb (1.4–3.2 kg). Size depends on the variety, 13-inch or 15-inch. Most pups go home at this age.
How much should an 8 week old beagle weigh?
An 8-week-old beagle should weigh 3–5 lb (1.4–2.3 kg) if it is a 13-inch variety. A 15-inch variety should weigh 4–7 lb (1.8–3.2 kg). Track the trend, not one reading.
How much should a 12 week old beagle weigh?
A 12-week-old beagle should weigh 7–11 lb (3.2–5.0 kg). The 13-inch variety sits at 7–10 lb and the 15-inch at 8–11 lb. Gain is fastest between weeks 8 and 12.
How much should a 4 month old beagle weigh?
A 4-month-old beagle should weigh 8–12 lb (3.6–5.4 kg). That is 8–11 lb for a 13-inch and 9–12 lb for a 15-inch. Height is about 8–11 inches.
How fast do beagle puppies grow?
Beagle puppies grow fastest before 4 months, gaining about 1 lb a week from weeks 8 to 12. Growth slows after that. Most reach adult height by 8–12 months and full weight by 12–18 months.
What is the average growth of a beagle per week?
The average beagle gains about 1 lb per week between weeks 8 and 12. From weeks 13 to 16, gain slows to about 0.2–0.3 lb per week on this chart. Judge progress over 3–4 weeks, since growth comes in bursts.
How much do beagles weigh at birth?
A newborn beagle weighs about 5–10 oz (140–280 g), which is under 1 lb. Healthy pups gain weight every day. A pup that loses weight needs a vet check.
How do you measure a beagle?
To measure a beagle, stand the dog on a flat floor. Measure height from the floor to the withers, the top of the shoulders. Measure chest girth around the rib cage behind the front legs, and length from the withers to the base of the tail.