Age Calculator
Calculate your exact age in years, months, days and more.
Free Age Calculator
Our free Age Calculator helps you calculate your exact age based on your date of birth. You can see your age in years, months and days, along with total days, weeks and hours.
How to Calculate Your Age
- Enter your Date of Birth.
- Optionally enter your Time of Birth.
- Leave the calculation date empty to calculate your current age.
- Or choose a specific date using Calculate Age As Of.
- Click Calculate Age.
- Your exact age and additional information will appear instantly.
What Does the Age Calculator Calculate?
This tool can show:
- Exact age in years, months and days
- Total number of days
- Total number of weeks
- Total number of hours
- Day of birth
- Next birthday
- Birthday countdown
Age Calculator Formula
Age is calculated by comparing the date of birth with the selected calculation date.
The calculator determines the completed years, months and days while accounting for different month lengths and leap years.
❓ FAQ
How does an age calculator work?
An age calculator compares your date of birth with a selected date and calculates the difference in years, months and days.
Can I calculate my age on a future date?
Yes. Enter a future date in the Calculate Age As Of field.
Can I calculate my age on a past date?
Yes, as long as the selected calculation date is after your date of birth.
Does the calculator support leap years?
Yes. The calculation uses JavaScript date functions and accounts for leap years.
Can I enter my time of birth?
Yes. Time of birth is optional.
Is this Age Calculator free?
Yes. The calculator is free to use.
Does it require an API?
No. All calculations happen directly in the user’s browser.