Border Collie Age Calculator
Calculate the human-age equivalent for this dog breed using the AVMA standard formula.
Aging Timeline
Breed Profile
- Size
- Medium (10-25kg)
- Average lifespan
- 13 years
- Lifespan range
- 12–15 years
- Origin
- United Kingdom
Age Conversion Table
Year-by-year human-age conversion calibrated to this breed's average lifespan and size category.
| Pet age (years) | Human age | Life stage |
|---|---|---|
| 1 | 15 | Junior |
| 2 | 24 | Adult |
| 3 | 29 | Adult |
| 4 | 34 | Adult |
| 5 | 39 | Adult |
| 6 | 44 | Adult |
| 7 | 49 | Senior |
| 8 | 54 | Senior |
| 9 | 59 | Senior |
| 10 | 64 | Senior |
| 11 | 69 | Geriatric |
| 12 | 74 | Geriatric |
| 13 | 79 | Geriatric |
| 14 | 84 | Geriatric |
| 15 | 89 | Geriatric |
| 16 | 94 | Geriatric |
| 17 | 99 | Geriatric |
| 18 | 104 | Geriatric |
| 19 | 109 | Geriatric |
| 20 | 114 | Geriatric |
Common Health Issues
- Hip dysplasia
- Epilepsy
- Collie eye anomaly
Common breed predispositions are not a diagnosis. Always consult a licensed veterinarian for screening, prevention, and treatment specific to your pet.
Calculate your pet's age
Enter your pet's exact age in years and months for a precise human-age conversion using this breed's profile.
Open calculatorSources & Citations
- American Veterinary Medical Association (AVMA)
- American Kennel Club (AKC)
- AAHA-AAFP Canine Life Stage Guidelines
This calculator is for educational and informational purposes only. Always consult a licensed veterinarian for medical advice specific to your pet.