Enter a date of birth to count the exact calendar days until the next birthday.
Today is —. February 29 birthdays use the last valid day of February in non-leap years.
The calculator finds the next calendar anniversary of the birth date and measures the elapsed calendar days from today to that date.
For a February 29 birth date, the anniversary is clamped to the last valid day of February in a non-leap year so the countdown remains a valid calendar calculation.
The result measures elapsed calendar days from today to the next birthday. A birthday today therefore returns zero days.
No. Enter a valid date of birth on or before today.
The calculator shows the age reached on the next birthday in the result details.