Updated
Time & Dates
Age Calculator
Calculate your exact age in years, months, and days, track total days and time units, count down to your next birthday, compare dates, and explore age milestones.
Exact Age, Birthday Countdown, Date Difference, and Milestones
Enter your birth date (or any two dates) to get calendar-accurate results that handle month lengths and leap years cleanly.
Exact age is a calendar breakdown: full years completed, then remaining full months, then remaining days. Total days and time units are shown for quick reference.
This tab focuses on the next birthday date and the countdown from your selected “as of” date. It also shows your age on your next birthday.
Date difference can be expressed as total days/weeks or as a calendar breakdown (years, months, days). Calendar breakdowns depend on month lengths, so they are not the same as dividing days by 30.
See your age on a specific date and explore milestone dates like 10,000 days old, 18/21/30/40/50 birthdays, and a selectable retirement-age estimate.