Dog age calculator

A playful general estimate, not a health assessment or lifespan prediction. Breed, size, and individual development can change the comparison. Ask a veterinarian about your dog’s individual needs.

How this estimate works

This simple model uses 15 human years for the first dog year, 9 more for the second, and 5 for each later year. It does not adjust for breed or size and does not estimate ages below one year.