Age Calculator
Enter your date of birth to find out exactly how old you are, down to the day.
What this calculator does
The Age Calculator works out your exact age in years, months, and days based on your date of birth and today’s date. It also shows how many total days and weeks you have been alive, and a countdown to your next birthday.
How the calculation works
The calculator compares your birth date to the current calendar date. It counts full elapsed years, then the remaining whole months, then the remaining whole days, adjusting for varying month lengths and leap years so the breakdown stays accurate. Total days lived is simply the number of calendar days between your birth date and today.
This tool is for general and educational use, such as satisfying curiosity or planning a birthday celebration. It is not intended for legal age verification, which should rely on official identity documents.