Age Calculator
Calculate your exact age down to the day from your birth date.
How to Use the Age Calculator
To calculate your chronological age:
- Select or type your date of birth in the Date of birth date field.
- Click the Calculate now → button.
- View your exact age broken down into completed years, months, and days.
Formula & Calculation Method
Age is calculated by subtracting the year, month, and day of birth from current calendar year, month, and day, adjusting for leap years and month lengths.
Practical Examples
Example 1: Born on January 15, 2000
Calculates exact elapsed years, months, and days from Jan 15, 2000 to today's date.
Example 2: Child milestone calculation
Determine exact age in months and days for infant growth charts or school entrance requirements.
Example 3: Verification for official applications
Quickly confirm if you meet specific age eligibility criteria (e.g. 18 years or 60 years).
Frequently Asked Questions
Does the age calculator take leap years into consideration?
Yes, calendar calculations automatically account for leap years and varying month lengths (28, 30, or 31 days).
Why does my age in months change slightly depending on the day of the month?
Because calendar months have varying lengths (28–31 days), days are counted relative to the completed month cycles.
Can I calculate age for a future date of birth?
No, date of birth inputs in the future are invalid and will display an error message.
Do you store my birth date information?
No. Your birth date is processed only within your web browser session.
Can I use this tool to calculate time elapsed between two custom dates?
The tool currently calculates time elapsed between your selected date of birth and today's date.