Work out animal age in human years instantly with clear inputs, formula shown and shareable results.
Uses the 2020 epigenetic clock formula for dogs, adjusted for adult size, and the standard stepped feline scale for cats.
Age conversion
Dogs: human age = 16 x ln(dog age) + 31. Cats: 15 human years for the first year, 9 for the second, then 4 for each additional year
Methylation comparisons show dogs age very fast early and then far more slowly, which a logarithm captures better than a flat multiplier.
Yes. Large breeds age faster and have shorter lifespans, which the size adjustment approximates.