Age Calculator
Calculate exact age in years, months and days.
What this calculator does
Enter a date of birth to see an exact age in years, months and days, along with total days lived and days until the next birthday.
How to use it
- Choose a date of birth.
- Optionally choose a different "as of" date (defaults to today).
- Press Calculate for an exact, calendar-accurate age.
Exact age-
Total days lived0
Total weeks lived0
Days to next birthday0
Frequently asked questions
Why is my age in days different from a simple day count?
We calculate calendar-accurate years, months and days first, accounting for different month lengths and leap years, then also give total days as a separate figure.