Enter your date of birth to find your exact age in years, months and days — plus total days and hours lived, the weekday you were born, and a countdown to your next birthday.
🔒 Your date of birth stays in your browser — the calculation runs entirely on your device.
Complete years, months and days — calculated with real month lengths and leap years.
Your life so far in total months, weeks, days, hours and minutes.
How many days until your next birthday and the weekday you were born on.
We subtract your birth date from the chosen date, accounting for the real number of days in each month and for leap years, to give complete years, months and days.
Yes — change the "Age on" date to any date to see how old you were or will be then.
The result shows the weekday of your birth date plus a countdown to your next birthday.
Completely free, no sign-up, and everything runs locally in your browser.