PetYearsJack Russell Terrier: age & lifespan
Jack Russell Terriers are a small dog breed with a typical lifespan of 13–16 years (about 15 on average). Check your Jack Russell Terrier’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.
Jack Russell Terrier age chart
Using a small breed’s aging curve, here’s roughly how old your Jack Russell Terrier is in human years:
| Jack Russell Terrier age | Human years |
|---|---|
| 1 year | 15 |
| 2 years | 24 |
| 4 years | 32 |
| 6 years | 40 |
| 8 years | 48 |
| 10 years | 56 |
| 12 years | 64 |
| 16 years | 80 |
How long do Jack Russell Terriers live?
The typical Jack Russell Terrier lifespan is 13–16 years. Lifespan varies with genetics, weight, dental care, exercise, and regular veterinary check-ups. Keeping your Jack Russell Terrier 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 Jack Russell Terrier is an individual; ask your vet about their health.