Age Calculator — How Old Am I?
Calculate your exact age down to the day. Enter your birthday to find out.
How This Age Calculator Works
This calculator computes your exact age in years, months, and days based on your date of birth and today's date (or any target date you choose). Unlike simple year subtraction, it accounts for varying month lengths, leap years, and the specific day of the month to give you a precise result.
Common Uses for an Age Calculator
An age calculator is used more often than you might expect. Common situations include: verifying age eligibility for Medicare (65), Social Security (62–70), or retirement plans; calculating exact age for legal documents, insurance applications, and passport renewals; determining a child's age for school enrollment cutoffs (which vary by state); and computing the age difference between two people for immigration or legal purposes.
Key Age Milestones in the United States
| Age | Milestone |
|---|---|
| 16 | Driver's license (most states) |
| 18 | Legal adult, vote, enlist, sign contracts |
| 21 | Legal drinking age |
| 25 | Car insurance rates typically drop |
| 59½ | Penalty-free 401(k)/IRA withdrawals |
| 62 | Earliest Social Security benefits |
| 65 | Medicare eligibility |
| 67 | Full Social Security retirement age (born after 1960) |
Leap Year Accuracy
If you were born on February 29, our calculator correctly handles leap year birthdays. In non-leap years, your birthday is treated as March 1 for age calculation purposes, which aligns with how most legal systems interpret leap year births.
Age in Different Units
This tool also shows your age in total months, weeks, days, hours, and minutes. For example, a 30-year-old has lived approximately 10,950 days, or 262,800 hours. These conversions are useful for science projects, trivia, and putting the passage of time into perspective.
Frequently Asked Questions
Exact age is calculated by finding the difference between your birth date and the current date, accounting for varying month lengths (28-31 days) and leap years. The result shows complete years, remaining months, and remaining days.
Yes. The calculator uses actual calendar dates, so leap years (February 29) are automatically accounted for in the calculation.