Estimate a dog's expected lifespan and remaining years by breed size.
Small breeds typically live around fourteen years while giant breeds may live only eight to ten, so each size has a different expected lifespan. Lifespan varies strongly with body size in dogs, which is worth planning around for care, insurance and the emotional timeline of pet ownership.
Dog Lifespan by Size
Remaining = breed-size lifespan - current age
Remaining = breed-size lifespan - current age Small breeds typically live around fourteen years while giant breeds may live only eight to ten, so each size has a different expected lifespan.
Lifespan varies strongly with body size in dogs, which is worth planning around for care, insurance and the emotional timeline of pet ownership.
This calculator takes 2 inputs: Breed-size lifespan, Current age. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.