Free date tool · No sign-up
Age Calculator
Enter a birth date and comparison date to find an exact calendar age, total days lived and the countdown to the next birthday.
Choose dates
Your dates stay on this device and are not submitted to our server.
Your age result
Exact age—
Total days lived—
Day you were born—
Next birthday—
Days until birthday—
How the result is calculated
The exact age uses completed calendar years and months, then counts the remaining days. Total days uses the elapsed time between the two dates. For a February 29 birth date, this tool uses February 28 in non-leap years for the birthday countdown.