Parson Russell Terrier Weight Chart
Expected adult weight, growth by age and a calculator for your Parson Russell Terrier puppy. AKC weight: males 13 to 17 lb (6 to 8 kg), females 13 to 17 lb (6 to 8 kg).
- Male, AKC
- 13 to 17 lb (6 to 8 kg)
- Female, AKC
- 13 to 17 lb (6 to 8 kg)
- Growth-chart size class
- Small
Predict your Parson Russell Terrier puppy's adult weight
Enter your puppy's age and weight to see an estimate.
Not veterinary advice. PuppySizer gives estimates from published sources. It cannot examine your pet. For any health concern, ask your own veterinarian. Read the full disclaimer.
Parson Russell Terrier male growth chart
Show the chart as a table
| Age | Typical male (lb) | Lower end of AKC range (lb) | Upper end of AKC range (lb) |
|---|---|---|---|
| 12 weeks | 5.3 | 5.4 | 6.3 |
| 16 weeks | 7.2 | 6.9 | 8.5 |
| 20 weeks | 8.8 | 8.3 | 10.4 |
| 26 weeks | 10.7 | 9.8 | 12.4 |
| 40 weeks | 12.8 | 11.6 | 14.7 |
| 52 weeks | 13.5 | 12.1 | 15.5 |
| 78 weeks | 14.4 | 12.6 | 16.4 |
| 104 weeks | 15.0 | 13.0 | 17.0 |
The curve ends at 15.0 lb (6.8 kg), the middle of the AKC range. On this curve a male reaches half of adult weight at about 17 weeks (4 months), 90 % at about 51 weeks (12 months) and 95 % at about 73 weeks (17 months).
Parson Russell Terrier female growth chart
Show the chart as a table
| Age | Typical female (lb) | Lower end of AKC range (lb) | Upper end of AKC range (lb) |
|---|---|---|---|
| 12 weeks | 5.7 | 6.3 | 6.6 |
| 16 weeks | 7.4 | 7.8 | 8.6 |
| 20 weeks | 9.0 | 9.1 | 10.4 |
| 26 weeks | 10.6 | 10.3 | 12.3 |
| 40 weeks | 12.6 | 11.8 | 14.4 |
| 52 weeks | 13.4 | 12.2 | 15.3 |
| 78 weeks | 14.3 | 12.7 | 16.2 |
| 104 weeks | 15.0 | 13.0 | 17.0 |
The curve ends at 15.0 lb (6.8 kg), the middle of the AKC range. On this curve a female reaches half of adult weight at about 16 weeks (4 months), 90 % at about 55 weeks (13 months) and 95 % at about 78 weeks (18 months).
Parson Russell Terrier weight by age
| Age | Male | Female |
|---|---|---|
| 12 weeks (3 mo) | 5.3 lb / 2.4 kg | 5.7 lb / 2.6 kg |
| 16 weeks (4 mo) | 7.2 lb / 3.3 kg | 7.4 lb / 3.4 kg |
| 20 weeks (5 mo) | 8.8 lb / 4.0 kg | 9.0 lb / 4.1 kg |
| 26 weeks (6 mo) | 10.7 lb / 4.8 kg | 10.6 lb / 4.8 kg |
| 40 weeks (9 mo) | 12.8 lb / 5.8 kg | 12.6 lb / 5.7 kg |
| 52 weeks (12 mo) | 13.5 lb / 6.1 kg | 13.4 lb / 6.1 kg |
| 78 weeks (18 mo) | 14.4 lb / 6.5 kg | 14.3 lb / 6.5 kg |
| 104 weeks (24 mo) | 15.0 lb / 6.8 kg | 15.0 lb / 6.8 kg |
Typical healthy dog, from the shape of the Salt et al. (2017) chart for the small size class, scaled to the AKC weight. Healthy puppies vary around these values.
Parson Russell Terrier size questions
How big does a Parson Russell Terrier get?
The American Kennel Club gives 13 to 17 lb (6 to 8 kg) for males and 13 to 17 lb (6 to 8 kg) for females. Individual dogs can fall outside a breed range, and a mix or a dog from working lines may be larger or smaller.
When is a Parson Russell Terrier fully grown?
On this curve a male reaches half of adult weight at about 17 weeks (4 months), 90 % at about 51 weeks (12 months) and 95 % at about 73 weeks (17 months). On this curve a female reaches half of adult weight at about 16 weeks (4 months), 90 % at about 55 weeks (13 months) and 95 % at about 78 weeks (18 months). These ages come from the shape of the published growth chart for small dogs, scaled to the AKC weight, so they describe a typical dog, not a particular one.
How much should a Parson Russell Terrier puppy weigh at 6 months?
A typical male is about 10.7 lb (4.8 kg) and a female is about 10.6 lb (4.8 kg) at 26 weeks on this curve. The range for healthy puppies is wide, so use the calculator above with your own puppy’s weight.
Other breeds in the same size class
Sources
- AKC breed pages (weight line only). American Kennel Club. Read 2026-11-08. Used for: Breed weight ranges, as numbers only. No AKC text is reproduced.
- Growth standard charts for monitoring bodyweight in dogs of different sizes. Salt C, Morris PJ, Wilson D, Lund EM, German AJ. PLoS ONE 12(9): e0182064 (CC BY 4.0). Read 2026-11-08. Used for: Centile growth curves for five size classes (adult weight under 40 kg) from 12 weeks to 2 years, built from Banfield Pet Hospital records. We read the values off the published charts.
AKC weight read on 2026-11-08 from akc.org/dog-breeds/parson-russell-terrier (numbers only). Facts last checked November 8, 2026.