zippydevtoolsDate & Time
Age Calculator
Calculate age in full years and total days from a birth date up to today.
Processed locally
CalculateSummaryAdult check
Input
Input
Enter the birth date. The calculation automatically uses the current date.
Output
Process the input to see the result here.
Quick examples
Age from birth date
Input: Birth date: 1990-06-15
Output: Full years, total days, and age classification.
Age Calculator FAQ
What result does this tool return?
It returns age in completed years and the total day count between birth date and the current date.
Which date format works here?
Use YYYY-MM-DD. Invalid dates such as 2024-02-30 are rejected.
Can I enter a birth date in the future?
No. If the birth date is after the reference date, the tool returns an error.
How does timezone affect the result?
The calculation is day-based and uses the browser's current date as the reference.
Is my input sent to a server?
No. Processing runs in the browser with local form data.
Related workflow links