🎂 Age & Birthday Calculator
Calculate exact age in years, months, and days from your birth date.
How the Age Calculator Works
Enter your birth date and instantly see your exact age broken down into years, months, and days. The calculator also tells you how many days remain until your next birthday, so you can start planning the celebration!
Common Uses for the Age Calculator
- Exact age — Find out your precise age down to the day, not just the year
- Birthday countdown — See how many days until your next birthday
- Legal age verification — Confirm if someone has reached a specific legal age (18, 21, etc.)
- Child development tracking — Track a baby or child's age in months for developmental milestones
- Retirement planning — Calculate how many years and months until you reach retirement age
- Document & form filling — Quickly determine exact age when filling out applications
How Is Age Calculated?
Age is calculated by comparing your birth date with today's date. The result accounts for varying month lengths and leap years to give you the most accurate breakdown possible. The "Next Birthday" counter shows the number of days until your next birthday arrives.
Age Calculation Examples
| Birth Date | Age (Y/M/D) |
|---|---|
| January 15, 1990 | Calculated in real time |
| December 25, 2000 | Calculated in real time |
| July 4, 1985 | Calculated in real time |
More Date Tools
- Days Until Calculator — Count days to any future date
- Date Difference Calculator — Find the exact gap between two dates
- Epoch Converter — Convert Unix timestamps to readable dates
- Week Number Finder — Look up ISO week numbers