How is exact age calculated?

Age is computed in calendar years, months, and days between your birth date and a reference date using date-only math. Completed years are counted first; remaining months and days follow, giving a precise age for forms, eligibility cutoffs, and milestone planning without rounding to whole years only.

How are leap years handled?

February 29 birthdays advance to March 1 in non-leap years for day counting. CalcVo uses UTC date-only arithmetic so local clocks and daylight saving time do not shift day counts on boundaries. Leap years add an extra day when counting spans that include February 29.

Can I calculate age on a future date?

Yes — set the reference date to any day on or after the birth date to see age on that future day. Birth dates after the reference date return a validation error because age cannot be negative. Useful for eligibility checks tied to a specific event date.