Enter your date of birth and this age calculator gives your exact age in years, months and days, plus the total number of days and hours you've been alive. For the bigger-picture view, try the life clock.
Guides about Age Calculator
Age & date calculations
How Many Days Old Am I? Counting Your Life in Days
Learn to answer how many days old am I, why the total is larger than you expect, the leap-year catch that trips people up, and how to find it fast.
Age & date calculations
How to Calculate Your Exact Age in Years, Months, and Days
A clear guide to calculating your exact age in years, months, and days, including the leap-year and uneven-month rules that trip people up, plus a faster way.
More lifetime-clock pages
Frequently asked questions
How accurate is it?
It computes the exact difference between your birth date and today, accounting for month lengths.
Is my date of birth saved?
No — everything is calculated locally in your browser and nothing is stored.