Age Calculator

Enter your date of birth and the calculator shows your exact age in years, months, and days. It also shows your total days, weeks, and months lived, and how many days until your next birthday.

The calculator counts completed calendar years, then completed months within the current year, then remaining days. This matches how age is legally and socially understood in most countries.

Most countries count age as the number of completed years since birth (Western system). Some East Asian traditions count age differently — for example, a baby is born at age 1 in the Korean age system. This calculator uses the Western completed-years method.

Enter your date of birth in the Age Calculator to instantly see your total days lived. As a rough estimate: every year adds approximately 365 days (366 in a leap year), so someone who is 30 years old has lived roughly 10,950 days.