How old is my dog in human years?
Seven dog years to one human year is a myth. A 2020 study from the University of California San Diego, in the journal Cell Systems, compared chemical changes in the DNA of dogs and people and found dogs age fastest early on: human age is about 16 times the natural log of the dog's age, plus 31. Peabody's pet age tool does the arithmetic.
Checked October 29, 2026.
Asked by families like yours and answered by Peabody editors. How we write and check. For your own pet, your vet knows best.
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Sources
- Wang et al., Quantitative Translation of Dog-to-Human Aging, Cell Systems 2020 (checked October 29, 2026)
- AAHA: 2019 Canine Life Stage Definitions (checked October 29, 2026)