local-only

Age Calculator

Exact age in years, months and days.

🔒 local memory only
Initializing Age Calculator in local browser environment…

How to use Age Calculator

  1. Select your birth date.
  2. Optionally select an "As of" date (defaults to today).
  3. Inspect your exact age broken down in years, months, days, total weeks, hours, and minutes.
  4. See a countdown to your next birthday.

Why use this local-first tool?

  • Accurate leap year and variable month length calendar arithmetic.
  • Calculates total lifetime days, hours, and minutes lived.

Frequently Asked Questions

Does this account for leap years?

Yes. Full calendar date math accounts for February 29th and historical leap years accurately.

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