- Can I calculate someone’s age as of a past or future date, not just today?
- Yes — the "as of" date defaults to today but can be changed to any date, which is useful for calculating age at a specific event or as of a document’s date.
- How is the age in years, months, and days calculated?
- It counts whole years first, then whole months within the remaining time, then the leftover days — the same way you would count age by hand on a calendar, accounting for different month lengths.
- Does this account for leap years?
- Yes — the calculation is based on actual calendar dates, so leap years are handled correctly without any special input needed.