Dog Age Calculator
Convert your dog's age to human years by size.
Instant results✓ Source-backed
1
Enter your pet's details
Auto-fill from:Save a pet profile
?
How this is calculated
Main result follows the American Veterinary Medical Association (AVMA) size-based chart: the guideline that a dog's first year equals about 15 human years, the second about 9, and each year after 4–7 depending on size. Larger dogs age faster.
Source-based educational tool; not independently reviewed by a veterinarian. Cited guidance does not imply endorsement by its authors.
Formula
Year 1 = 15 · Year 2 = +9 · each later year = +4 (small), +5 (medium), +6 (large), +7 (giant) Epigenetic: 16 × ln(dog age) + 31
Assumptions
- •Size class reflects adult weight
- •Population averages; individual ageing varies
- •Epigenetic formula derived from Labrador Retrievers