Age Calculator
Free age calculator. Calculate exact age in years, months, days, and total days. Find your birthday weekday and days until next birthday.
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Age Calculator
Calculate your exact age in years, months, days, and total days. Enter your date of birth and optionally a specific date to see how old you were or will be on that day. This tool also tells you the day of the week you were born and how many days until your next birthday.
How Age Is Calculated
Age is calculated by finding the difference between the current date and your date of birth. The calculation accounts for leap years, varying month lengths, and correctly handles year boundaries. The algorithm first calculates full years, then remaining months, then remaining days for maximum accuracy.
Interesting Age Facts
The day of the week you were born is determined by your exact birth date. You were born on the same weekday as everyone else born on that date. In the Gregorian calendar, every date falls on a different day of the week each year, but the same date 28 years later (or 84 years for some dates) will fall on the same day of the week due to the leap year cycle.