Age Calculator
Find out exactly how old you are. The age calculator takes your birth date and returns your precise age in years, months, and days, plus the total number of days you have been alive and how long until your next birthday.
Your Exact Age
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Months
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Days
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Total Days
Next birthday in 0 days
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How to Use the Age Calculator
- Enter your date of birth.
- Optionally set an "as of" date to compute age on a specific day.
- Click Calculate Age to see years, months, days, and next birthday countdown.
How It Works
The calculator subtracts the birth date from the target date using calendar arithmetic, borrowing from months and years when needed so the result is always the correct year-month-day breakdown, including leap-year months.
Frequently asked questions
Everything you need to know about this calculator.
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