Age Calculator
Exact age in years, months, and days from a date of birth.
Enter a date of birth to get an exact age in years, months, and days, plus the total number of days lived and the date of your next birthday.
Frequently asked questions
Does this account for leap years?
Yes — the calculation is calendar-aware, using actual month lengths (including February in leap years), not a fixed 365-day average.
Can I calculate age as of a specific date, not today?
Yes — change the "as of" date to any date to see the age on that day, useful for eligibility checks or historical records.