Age Calculator
Calculate completed years and total days between your birth date and a chosen date.
Your inputs stay on this device.
Result
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How to use
Choose both dates and calculate. Results use calendar days.
How it works
Uses Gregorian calendar dates. A February 29 birthday advances on March 1 in a non-leap year. No legal age determination.
Example
Born 2000-09-15, as of 2026-09-30: 26 completed years.