A swift aged 7 years is like a human aged 29 years 4 months
If a swift is 7 years old, that is like a human aged about 29 years 4 months (accuracy ±3 months 3 weeks). 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 swift aged 7 years in human years?
About 29 years 4 months (accuracy ±3 months 3 weeks).
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.