← All toolsCategory 40 · Life and growth

Age, birthdays and life milestones
in one clear view.

6 calculators in this category · Browse by topic or open a tool directly.

Age Calculator

Calculate exact calendar age, total elapsed days and the next birthday from a birth date and an as-of date. Inputs stay in your browser.

Compare two birth dates as completed years, months and days without changing the result as time passes. Inputs stay in your browser.

Count elapsed days, completed weeks and any custom day milestone from a date of birth. Inputs stay in your browser.

Map a birth year to a commonly used generation range while keeping its informal cultural boundaries explicit. Inputs stay in your browser.

Find the next half birthday, next birthday and date-based golden birthday from one birth date. Inputs stay in your browser.

Look up SSA full retirement age by birth date, including the January 1 prior-year rule and milestone date. Inputs stay in your browser.