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Understand your companion

Pet Age Calculator

A little perspective on their years together with you.

For pets at least one year old. This comparison is approximate and does not estimate life expectancy.

Your age comparison

Enter your pet's age and choose Compare age.

How this comparison works

For dogs, we use a general medium-sized dog comparison: 15 at age one, 24 at age two, and five additional comparison years per year afterward. For cats, Cornell's guideline gives 16 at age one, 21 at age two, and four additional years per year afterward.

Sources: AKC dog age guidance ↗ and Cornell Feline Health Center ↗.

Different methods give different estimates. Dog size, breed and individual health affect aging; this tool does not adjust for those factors. We do not apply these formulas to other species or pets younger than one year. Ask your veterinarian about your pet's life stage and care needs.