Age Calculator

Exact age in years, months and days, and how long until the next birthday.

Age

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Days lived
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Next birthday
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How this was calculated
Runs in your browser. Nothing you type is sent anywhere.
About the Age Calculator
Age Calculator gives exact age in years, months and days, the total days lived, and how many days until the next birthday. Change the "age on" date to find an age at any point in the past or future.
How to use it
  1. Enter the date of birth.
  2. Leave "age on" as today, or pick another date.
  3. Read the age and the countdown to the next birthday.
Example
Someone born on May 20, 1990 is 36 years, 4 months and 17 days old on October 7, 2026. That's 13,289 days, with 225 days to their next birthday.
Questions
What about February 29 birthdays?
In years without a February 29, the birthday is counted on February 28.
How are months counted?
Whole calendar months first, then the remaining days.
Is my date of birth stored?
No. Everything is calculated in your browser.