Age Calculator
Find your exact age in years, months and days, and the countdown to your next birthday.
Exact age
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Total months
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Total weeks
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Total days lived
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Total hours
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Next birthday in
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Results update as you type.
About this calculator
An age calculator finds the exact time between your date of birth and today — in years, months and days — and counts down the days to your next birthday. It also works for the age of any date, such as an anniversary.
Frequently asked questions
How is exact age calculated?
It counts full years from your birth date to the target date, then the remaining whole months, then the leftover days — accounting for different month lengths and leap years.
Can I calculate age on a future or past date?
Yes. Set "Age at date" under advanced options to any date to see how old you were or will be then.
Results are estimates for general guidance only, not financial, medical or tax advice.