Date & Age
Age Calculator
Enter your date of birth to instantly find your exact age in years, months, weeks, days and hours — plus a live countdown to your next birthday.
Enter your date of birth above to see your exact age.
How to Use the Age Calculator
- 1Enter your date of birth using the date picker.
- 2Optionally change the “Age as of” date to calculate your age on any specific day.
- 3Your exact age appears instantly in years, months and days.
- 4Scroll down to see your total age in months, weeks, days and hours, along with your next birthday countdown.
How Age Is Calculated
The calculator finds the calendar difference between your date of birth and the reference date. It counts complete years, then complete months within the remaining period, and finally the leftover days — the same way you'd count age by hand using a calendar, accounting for different month lengths and leap years.