Dog & Cat Age Converter
Human-equivalent age is an estimate of a pet’s life stage, not its actual age. This model uses 15 human years at age one and 24 at age two, then adds 4 per year for cats or 4, 5, 6 or 7 for small, medium, large or giant dogs.
Estimated human-equivalent age
24.0 years
This is an approximate size-based model: 15 human years for the first year and 24 by age two. Each later year adds 4 for cats or 4–7 for dogs depending on size. Breed, health and individual ageing vary; this is not a veterinary assessment.