Tools

Age Calculator from Birth Date

Calculate age in years, months, and days from a birth date.

Age Calculator

Calculate a precise age from a birth date for records, profiles, or planning. This is useful for HR, education, healthcare, or personal milestones.

How to use the Age Calculator

  1. Enter the birth date.
  2. Optionally set an As Of date.
  3. Click Calculate.

Common use cases

  • Verifying eligibility by age.
  • Computing tenure or membership age.
  • Preparing reports with age groups.
  • Planning milestone events.

Tips & notes

  • Use ISO dates to avoid day/month confusion.
  • For exact time spans, use a duration tool.
  • Ensure the reference date is correct for your context.

Related time tools

  • Age at Date Calculator
  • Date Difference Calculator
  • Days Between Two Dates

FAQ

Can I use a custom reference date?
Yes. Set the As Of date.
Does it handle leap years?
Yes. It uses calendar-aware rules.
Is the result precise to the day?
Yes, it returns years, months, and days.