How This Calculation Works
The age calculator subtracts your birth date from today's date to find your exact age in years, months, and days. It also calculates your total days alive and the countdown to your next birthday.
Common Mistakes to Avoid
- Leap year confusion. If born on Feb 29, the calculator counts your birthday as March 1 in non-leap years.
- Time zone differences. The calculation uses your device's local date, which may differ if you're in a different time zone.
Worked Example
Scenario: Born on January 15, 1990. Today is September 3, 2026.
Age: 36 years, 7 months, 19 days.
Total days: 13,380 days alive.
Next birthday: 134 days until January 15, 2027.