Age Calculator
Your date of birth is saved locally in your browser only.
How Old Am I? Calculate Your Exact Age
This age calculator determines your exact age in years, months, and days from your date of birth. It also shows the total number of days and hours you've been alive, the day of the week you were born, and how many days until your next birthday.
Age by Date of Birth
To use this date of birth calculator, simply enter your birthday in the first field. The results appear instantly — no button needed. You can also change the "calculate age on" date to find out how old you'll be on a future date, or how old someone was on a past date.
Exact Age Calculator
The calculation accounts for leap years and the varying number of days in each month, giving you a precise result down to the day. Whether you want to calculate your age, a child's age, or verify an age for a legal document, this tool handles it accurately.
Birthday Calculator
Beyond your current age, the birthday calculator shows the date and day of your next upcoming birthday, along with a countdown in days. It also tells you which day of the week you were born — a detail many people find surprisingly interesting. To calculate the number of days between any two dates, see the date calculator.