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Age Calculator

Find exact age in years, months, days and total days.

No adsNo sign-upOffline after cacheLocal-only Privacy
Answer Ready

Choose dates to calculate.

Open countdown

What "exact age" means here

The calculator returns both a calendar age and a total-day count. Calendar age answers the human question — years, months and days since the birth date. Total days answers the arithmetic question — how many calendar midnights have passed between the two dates.

  • Change Age on to calculate age at a past event, future appointment or legal cutoff date.
  • Leap-year birthdays are clamped to the last valid day of February when the target year has no February 29.
  • The next-birthday link opens a countdown for the calculated birthday date.

Related date tools

Days between dates Date calculator Countdown

Questions

Can I calculate age on a past or future date?
Yes. Change the age-on date to calculate age at that point in time.
Does it show total days lived?
Yes. The result includes total calendar days between the birth date and the selected date.
Can I count down to the next birthday?
Yes. The result links to the countdown tool for the next birthday date.

Use it with confidence

Quick operating notes for this browser-based tool.

Keyboard
Use Tab to move through controls and Enter or Space to activate them. This tool has no global shortcuts.
Mobile
Controls are touch-sized and stack on narrow screens. Rotate the device only when a wider view helps.
Offline
The calculation runs in your browser. The route must have loaded once before it can reopen from cache without a connection.
Browser limits
Date results use local calendar values in the browser; confirm timezone and date inputs before relying on the answer.