Age Calculator
Enter your date of birth to see your exact age in years, months, days, hours, minutes, and seconds — updated live.
Please enter a valid date of birth (must be in the past).
Your exact age
0 yrs 0 mo 0 days
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Total Days
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Total Weeks
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Total Months
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Total Hours
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Total Minutes
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Total Seconds ↺
Next Birthday
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Age Calculator — Frequently Asked Questions
How do I calculate my exact age?
Enter your date of birth into the Age Calculator above. It instantly shows your exact age in years, months, and days, plus totals in weeks, hours, minutes, and seconds — all updating live to the second.
How many days old am I?
The calculator shows your total age in days under 'Total Days'. For example, a 30-year-old is roughly 10,950 days old, though the exact number depends on leap years and the specific dates involved.
How do I find out how many hours old I am?
The Age Calculator shows your total age in hours. It counts every hour from midnight on your birth date to right now, updating live every second.
When is my next birthday and how many days away is it?
The calculator shows the number of days until your next birthday and the age you'll be turning. If today is your birthday, it shows 'Today! 🎂'.
Does the calculator account for leap years?
Yes. The total days, hours, minutes, and seconds counts are calculated from your exact birth date to the current moment, fully accounting for all leap years in between.
How is age calculated in years, months, and days?
Age is calculated by comparing your birth date to today. The years count whole years elapsed, months count the additional complete months after the last birthday, and days count the remaining days after the last complete month.
How to Use the Age Calculator
Simply enter your date of birth using the date picker above. The calculator instantly shows your age broken down into years, months, and days — the standard way age is expressed. Below that you'll see your total age expressed in days, weeks, months, hours, minutes, and seconds (the last three update live every second so you can see exactly how many seconds old you are right now).
How Age Is Calculated
Age in years, months, and days is calculated by comparing your birth date to today's date. The year count represents how many complete 12-month cycles have elapsed since your birthday. The month count represents additional whole months after your most recent birthday. The day count represents remaining days after the last complete month.
The totals (days, weeks, hours, etc.) are calculated by measuring the exact elapsed time from midnight on your birth date to the current moment, accounting for all leap years along the way. This is why "total hours" and "total seconds" keep ticking live — they reflect the precise current moment.