Age Calculator
Enter your date of birth to calculate your age in years, months, and days.
Enter your values, then press the button below:
How age is calculated
The calculator compares your date of birth with today's date and accounts for whether your birthday has occurred in the current year.
Privacy
Your date is processed in your browser. SizeKit does not need an account to use this calculator.
Good to know
The result uses today's date from your device. The calculator also shows the total number of days lived and how many days remain until your next birthday.
Frequently asked questions
How is exact age calculated?
Age in years is the number of full years since your birth date. The remaining months and days are counted from your most recent monthly anniversary.
Is my date of birth stored?
No. The calculation happens in your browser and your date is not sent to a server.
Can I calculate age on a past date?
This tool calculates age as of today. For a past date, subtract the two years and adjust for months and days manually.