🎂 Free Tool
Age Calculator
Find your exact age in years, months, and days — plus fun stats about your life.
Calculate as of today
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years old
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About the Age Calculator
How is my exact age calculated?
Your age is calculated by comparing your date of birth to today's date, accounting for leap years and varying month lengths — giving you a precise count of years, months, and days lived.
Does this account for leap years?
Yes. The total days and weeks use actual elapsed milliseconds between your birth date and today, so all leap years are automatically included.
How many days until my next birthday?
Enter your date of birth and hit Calculate — the tool shows exactly how many days remain until your next birthday and the date it falls on.
What is the legal age of adulthood?
In most countries including the US, UK, Canada and Australia the legal age of adulthood is 18. Japan lowered its age of majority from 20 to 18 in 2022.