Age Calculator
Calculate age in years, months, weeks, days, hours, and minutes.
Calculates exact age. Time is measured in years, months, and days between dates. Next birthday countdown represents days remaining until the anniversary of birth.
How to Use the Age Calculator
Find your exact age down to the minute with our free chronological age calculator. Input your date of birth to calculate your current age in years, months, and days. The tool also breaks down your age into total weeks, days, hours, and minutes, and shows you how many days remain until your next birthday.
- Date of Birth: Bounded parameter in the mathematical model.
- Age at Date: Bounded parameter in the mathematical model.
Age Calculator Explained: Formula, Math, and Applications
Learn the mathematics, formulas, and real-world applications behind the Age Calculator.
Read Full Guide →How is chronological age defined?
Chronological age is the amount of time that has passed from your birth to the current date. It is typically expressed in years, months, and days.
How do you calculate age manually?
Subtract the birth year from the current year, then adjust down by one year if the current month and day are before the birth month and day. Finally, calculate the remaining months and days based on the calendar months in between.
What is the difference between chronological age and biological age?
Chronological age measures time passed. Biological age refers to how old your cells and tissues are based on physiological indicators like fitness, genetics, and lifestyle habits.
Add or subtract days, weeks, months, and years from any calendar date.
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