A swallow aged 3 years is like a human aged 87 years 2 months
If a swallow is 3 years old, that is like a human aged about 87 years 2 months (accuracy ±1 year 4 months). 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 swallow aged 3 years in human years?
About 87 years 2 months (accuracy ±1 year 4 months).
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.