Calculate Exact Age for Birthdays

Enter anyone's birth date to see their exact age in years, months, days — plus total days lived and hours alive.

Milestone birthdays (18, 21, 30, 40, 50) are common age verification points. Get the exact date of the milestone by calculating forward from the birth date.

"Days until next birthday" helps plan surprise parties or birthday gift orders. Check weeks in advance so there's time to prepare.

The day-of-week field shows what day of the week the person was born. Fun trivia for birthday cards and speeches.