A water vole aged 1 year 1 month is like a human aged 34 years 9 months

If a water vole is 1 year 1 month old, that is like a human aged about 34 years 9 months (accuracy ±1 month 4 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 water vole aged 1 year 1 month in human years?

About 34 years 9 months (accuracy ±1 month 4 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.