Free · Client-side · Precise
Age Calculator
Calculate exact age in years, months, and days — plus a countdown to the next birthday.
How Old Am I?
Runs entirely in your browserNothing you enter here is stored or sent anywhere.
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Total Days
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Total Weeks
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Total Months
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Next Birthday
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FAQ
Frequently Asked Questions
Enter your birth date above. The calculator shows your exact age in years, months, and days, along with total days, weeks, and months you've been alive, and a countdown to your next birthday.
In non-leap years, this calculator treats February 28 as the anniversary date for age and next-birthday purposes, which matches the common real-world convention for leap-day birthdays.
Yes. Change the "As of" date to any date you like — useful for figuring out someone's exact age on a past or future event date. For a general span between any two dates, try the Date Difference Calculator instead.
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