Find out how old your beloved pet is in human years! Works for dogs, cats, rabbits, and more.
Select your pet type, enter its age, and we'll convert it to human years.
Pets mature at vastly different rates depending on their species, size, and breed. A one-year-old hamster is already a senior, while a one-year-old dog is still an adolescent. Our calculator uses veterinary research-based formulas to give you an accurate human-equivalent age for your specific pet.
We apply different mathematical models for each pet type. Dogs have a rapid first two years (24 human years by age 2), while rabbits start at 21 human years after just one year. Small pets like hamsters age much faster, with each month adding significant human-equivalent time.
Larger dog breeds age faster than smaller ones after the first two years. That's why we ask for your dog's size â a small 10-year-old dog is roughly 56 in human years, while a large 10-year-old dog is around 77. Size is one of the most important factors in canine aging.
Our formulas are based on peer-reviewed veterinary studies and widely accepted aging models used by animal health professionals. We reference the AVMA (American Veterinary Medical Association) guidelines and published research on species-specific aging rates.
| Pet Type | Year 1 | Year 2 | Each Year After |
|---|---|---|---|
| ð Dog (Small) | 15 human yrs | +9 (24 total) | +5 per year |
| ð Dog (Medium) | 15 human yrs | +9 (24 total) | +6 per year |
| ð Dog (Large) | 15 human yrs | +9 (24 total) | +7 per year |
| ðą Cat | 15 human yrs | +9 (24 total) | +4 per year |
| ð° Rabbit | 21 human yrs | â | +4 per year |
| ðđ Hamster | 28 human yrs | â | +2.5 per month |
| ðđ Guinea Pig | 14 human yrs | +7 (21 total) | +4 per year |
| ðĶ Bird | 16 human yrs | +8 (24 total) | +4 per year |
| â Other | 15 human yrs | +8 (23 total) | +5 per year |
Knowing your pet's true age helps you schedule appropriate vet visits, vaccinations, and screenings. Senior pets need different care â our calculator tells you when your pet enters their golden years so you can adjust their diet and health routine accordingly.
Pets go through the same life stages as humans â baby, teen, adult, and senior â but at different speeds. Understanding where your pet is in their life journey helps you provide the right nutrition, exercise, and mental stimulation for their developmental stage.
When you understand your pet's human-equivalent age, you can better empathize with their needs and behavior. A "teenager" dog needs patience and training. A "senior" cat needs comfort and gentleness. Seeing your pet's age in human terms strengthens your connection.