A partridge aged 1 year 9 months is like a human aged 26 years 11 months

If a partridge is 1 year 9 months old, that is like a human aged about 26 years 11 months (accuracy ±4 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 partridge aged 1 year 9 months in human years?

About 26 years 11 months (accuracy ±4 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.