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Dog Age Calculator
Compare a dog’s whole-year age with an illustrative human age using the size groups in AAHA’s chart.
- Illustrative human age
- 37
How the calculation works
The result is looked up by age and size; a constant seven-to-one multiplier is not used.
Inputs
- Dog age in whole years
- Chart weight group
Calculation details
Choose the dog’s adult weight group from the chart. Breed, genetics, and health affect aging.
This is an educational comparison, not a lifespan prediction. The chart has no value for giant dogs older than 16.
Updated: 2026-10-02