About the Age Calculator
Our free Age Calculator tool helps you determine your exact age in years, months, weeks, and days. Simply enter your date of birth, and we'll calculate the precise duration from that date to today (or any other target date).
Key Features
- Exact Age Calculation: Get your age down to the day.
- Date Arithmetic: Use the Date +/- Calculator tab to add or subtract years, months, and days from any given date.
- Next Birthday Countdown: Find out exactly how many days are left until your next birthday.
- Total Duration: See your age expressed in total weeks, total months, or total days.
Common Uses
Personal Milestones
Perfect for tracking birthdays, anniversaries, and calculating exactly how old you are for official documents.
Project Planning
Use the Date Calculator to determine project deadlines by adding duration to a start date.
How It Works
The tool handles the complexities of the Gregorian calendar, including leap years and varying month lengths (28, 30, or 31 days). It provides accurate results instantly in your browser without sending any data to a server.