A black stork aged 13 years is like a human aged 61 years 4 months

If a black stork is 13 years old, that is like a human aged about 61 years 4 months (accuracy ±6 months 1 week). The calculation uses the average and maximum lifespans and the age of maturity of both species, so the ratio is not linear.

How old is a black stork aged 13 years in human years?

About 61 years 4 months (accuracy ±6 months 1 week).

Why is the age not converted linearly?

Species age unevenly: childhood, maturity and old age take a different share of life, so the calculator matches the life stages of both species.

Can I choose another age or species?

Yes, the page has the calculator: pick the species, sex and age, and the result is recalculated.