Date & Time tool
Age Calculator
Calculate an exact age and the time remaining until the next birthday.
How to use Age Calculator
An age calculator measures the time between a birth date and a selected date. It can show age in years, months, days, and the remaining time before the next birthday.
Basic idea
Selected date - Birth date = Age
Why can age calculation be tricky?
Month lengths and leap years can make manual age calculation less obvious, especially for exact days.