Age Calculator - How Old Am I?
Calculate your exact age in years, months, and days. Our free online age calculator helps you find out how old you are from your date of birth. You can also calculate age on any specific date in the past or future.
Leave blank for today's date
How to Use This Calculator
- Enter your date of birth in the "Date of Birth" field
- Optionally, enter a custom date in the "Calculate As Of" field (defaults to today)
- Click "Calculate Age" to see your results
- View your age in years, months, and days, plus additional information
Age Calculation Formula
Our age calculator uses the following approach:
- Calculate the difference between the current date and birth date
- Account for whether the birthday has occurred this year
- Adjust for different month lengths and leap years
- Provide results in multiple formats (years, months, days, total days, etc.)