Collie Weight Chart
Expected adult weight, growth by age and a calculator for your Collie puppy. AKC weight: males 60 to 75 lb (27 to 34 kg), females 50 to 65 lb (23 to 29 kg).
- Male, AKC
- 60 to 75 lb (27 to 34 kg)
- Female, AKC
- 50 to 65 lb (23 to 29 kg)
- Growth-chart size class
- Large
Predict your Collie 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.
Collie 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 | 16.2 | 17.1 | 20.6 |
| 16 weeks | 24.6 | 24.6 | 30.4 |
| 20 weeks | 33.0 | 32.2 | 40.0 |
| 26 weeks | 43.7 | 41.9 | 51.9 |
| 40 weeks | 58.3 | 53.6 | 67.4 |
| 52 weeks | 62.2 | 57.0 | 70.9 |
| 78 weeks | 64.9 | 59.2 | 72.8 |
| 104 weeks | 67.5 | 60.0 | 75.0 |
The curve ends at 68 lb (31 kg), the middle of the AKC range. On this curve a male reaches half of adult weight at about 20 weeks (5 months), 90 % at about 46 weeks (11 months) and 95 % at about 69 weeks (16 months).
Collie 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 | 17.7 | 15.0 | 21.9 |
| 16 weeks | 24.8 | 21.2 | 30.2 |
| 20 weeks | 31.9 | 27.5 | 38.3 |
| 26 weeks | 40.3 | 34.9 | 47.8 |
| 40 weeks | 50.2 | 43.6 | 58.5 |
| 52 weeks | 53.2 | 46.3 | 61.5 |
| 78 weeks | 55.9 | 48.7 | 63.8 |
| 104 weeks | 57.5 | 50.0 | 65.0 |
The curve ends at 58 lb (26 kg), the middle of the AKC range. On this curve a female reaches half of adult weight at about 18 weeks (4 months), 90 % at about 45 weeks (10 months) and 95 % at about 63 weeks (15 months).
Collie weight by age
| Age | Male | Female |
|---|---|---|
| 12 weeks (3 mo) | 16.2 lb / 7.3 kg | 17.7 lb / 8.0 kg |
| 16 weeks (4 mo) | 25 lb / 11.1 kg | 25 lb / 11.3 kg |
| 20 weeks (5 mo) | 33 lb / 15.0 kg | 32 lb / 14.5 kg |
| 26 weeks (6 mo) | 44 lb / 19.8 kg | 40 lb / 18.3 kg |
| 40 weeks (9 mo) | 58 lb / 26 kg | 50 lb / 23 kg |
| 52 weeks (12 mo) | 62 lb / 28 kg | 53 lb / 24 kg |
| 78 weeks (18 mo) | 65 lb / 29 kg | 56 lb / 25 kg |
| 104 weeks (24 mo) | 68 lb / 31 kg | 58 lb / 26 kg |
Typical healthy dog, from the shape of the Salt et al. (2017) chart for the large size class, scaled to the AKC weight. Healthy puppies vary around these values.
Collie size questions
How big does a Collie get?
The American Kennel Club gives 60 to 75 lb (27 to 34 kg) for males and 50 to 65 lb (23 to 29 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 Collie fully grown?
On this curve a male reaches half of adult weight at about 20 weeks (5 months), 90 % at about 46 weeks (11 months) and 95 % at about 69 weeks (16 months). On this curve a female reaches half of adult weight at about 18 weeks (4 months), 90 % at about 45 weeks (10 months) and 95 % at about 63 weeks (15 months). These ages come from the shape of the published growth chart for large dogs, scaled to the AKC weight, so they describe a typical dog, not a particular one.
How much should a Collie puppy weigh at 6 months?
A typical male is about 44 lb (19.8 kg) and a female is about 40 lb (18.3 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
- Labrador Retriever65 to 80 lb (29 to 36 kg)
- Golden Retriever65 to 75 lb (29 to 34 kg)
- German Shepherd65 to 90 lb (29 to 41 kg)
- Boxer65 to 80 lb (29 to 36 kg)
- Doberman Pinscher75 to 100 lb (34 to 45 kg)
- Bernese Mountain Dog80 to 115 lb (36 to 52 kg)
- Belgian Malinois60 to 80 lb (27 to 36 kg)
- Weimaraner70 to 90 lb (32 to 41 kg)
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/collie (numbers only). Facts last checked November 8, 2026.