Age Calculator
Calculate your exact age in years, months, days, and more
Enter your birth date
Leave blank for today's date
About This Calculator
Ever wondered exactly how old you are? Our age calculator does more than just tell you your age in years—it breaks down your age into years, months, weeks, and days for a complete picture of the time you've been alive. Whether you need to verify your age for official documents, celebrate an upcoming birthday milestone, or simply satisfy your curiosity, this calculator provides precise results accounting for leap years and varying month lengths. The age calculator is useful for: - Determining exact age for legal or official purposes - Planning birthday celebrations and milestones - Calculating age differences between people - Finding out how many days until your next birthday - Historical age calculations between any two dates Simply enter your birth date and get instant, accurate results. You can also calculate age as of any specific date, not just today.
How to Use
- 1Enter your date of birth
- 2Optionally, enter a specific date to calculate age as of that date
- 3View your exact age in years, months, and days
- 4See total months, weeks, and days for additional perspective
Formula
Age = Current Date - Birth DateAge is calculated by subtracting the birth date from the current date, accounting for varying month lengths and leap years.
FAQ
Exact age is calculated by subtracting your birth date from the current date (or a specified date). The calculation accounts for the varying lengths of months (28-31 days) and leap years to give you precise years, months, and days.
Yes, the calculator correctly handles leap years in all calculations. Leap years (with 366 days) occur every 4 years, with exceptions for century years not divisible by 400.
If you were born on February 29 (a leap day), your birthday is typically celebrated on February 28 or March 1 in non-leap years. Legally, the age change usually occurs at the start of March 1 in non-leap years.
The days calculation is accurate to the day. It correctly accounts for all month lengths and leap years. However, it doesn't calculate down to hours and minutes.
Yes! Enter any birth date and use the "Calculate Age As Of" field to enter any other date. This lets you calculate age at any point in time, past or future.
Total months equals (complete years × 12) + additional months. If you're 25 years and 3 months old, your total months is 303 (25 × 12 + 3), not 300.