Pet age
Dog Age Calculator
Convert dog age using size-aware life-stage estimates for small, medium, and large dogs.
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When to use this dog age calculator
Dog owners often need a fast dog-years estimate for adoption profiles, vet forms, life-stage planning, and senior-care conversations.
How it works
Dogs mature quickly in the first two years. After that, larger dogs tend to age faster than smaller dogs, so this calculator adjusts by size.
- Select the dog size for a more useful estimate.
- Large breeds often reach senior life stages earlier.
- Use veterinary guidance for health, diet, and age-related care decisions.
Frequently asked questions
How do I calculate dog years?
Enter your dog’s age and size. The calculator estimates human-age equivalent using a size-aware model.
Is one dog year always seven human years?
No. Dog aging varies by life stage and breed size.
Why does dog size matter?
Large dogs often age faster after maturity than small dogs.
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