年齢計算機
概要 年齢計算機
誕生日から正確な年齢を年・月・日単位で計算します。楽しい統計情報付きの無料年齢計算機です。-
Total days lived-
Total weeks lived-
Days to next birthday-
Related Tools
Frequently asked questions
Does this account for leap years?
Yes - the calculator works from actual calendar dates, so leap years are automatically handled correctly.
Can I calculate age as of a specific future or past date?
Yes - instead of using today's date, enter any target date to see the age as of that day (useful for eligibility checks, legal deadlines, or planning ahead).
Why do two age calculators sometimes give slightly different results?
Small differences usually come from how each tool rounds months/days - this calculator counts full elapsed years, months, and days exactly, matching how you'd count by hand on a calendar.
