Age Calculator
Age calculator
Age is the time from a birth date to today, shown as complete years, then leftover months and days. Enter a date of birth below to get an exact age — plus totals in weeks, days, and hours, and how long until the next birthday. Leap years are handled automatically.
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In months
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In weeks
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In days
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In hours
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Next birthday
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Day you were born
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Frequently asked questions
How is age calculated?
Time elapsed from a birth date to today — complete years, then leftover months, then days. Different month lengths and leap years are accounted for.
How do I calculate age from a date of birth?
Enter your date of birth; the tool subtracts it from today and shows exact age plus totals in weeks, days, and hours.
Does it handle leap years?
Yes — it uses real calendar dates, so leap years and month lengths are correct.