PetYears
Border Collie: age & lifespan
Border Collies are a medium-sized dog breed with a typical lifespan of 12–15 years (about 14 on average). Check your Border Collie’s age in human years below.
Size-aware estimate based on the AKC dog-age chart & veterinary life-stage guidance. A guide, not a diagnosis.
Border Collie age chart
Using a medium-sized breed’s aging curve, here’s roughly how old your Border Collie is in human years:
| Border Collie age | Human years |
|---|---|
| 1 year | 15 |
| 2 years | 24 |
| 4 years | 34 |
| 6 years | 44 |
| 8 years | 54 |
| 10 years | 64 |
| 12 years | 74 |
| 15 years | 89 |
How long do Border Collies live?
The typical Border Collie lifespan is 12–15 years. Lifespan varies with genetics, weight, dental care, exercise, and regular veterinary check-ups. Keeping your Border Collie at a healthy weight and staying current on preventive care are two of the biggest levers on a longer, healthier life.
Related breeds
Lifespan figures are typical ranges for the breed and are educational only — not veterinary advice. Your Border Collie is an individual; ask your vet about their health.