Age Calculator
Enter your date of birth to find your exact age in years, months, and days — plus a countdown to your next birthday.
Frequently Asked Questions
How do I calculate my exact age?
Enter your date of birth in the field above and click "Calculate Age". The tool finds the difference between today's date and your birth date, breaking it into precise years, months, and remaining days — accounting for leap years and varying month lengths automatically.
How many days old am I?
Your total age in days is computed by subtracting your birth date from today's date in milliseconds, then dividing by 86,400,000 (the number of milliseconds in one day). A 30-year-old is roughly 10,950+ days old, depending on how many leap years fell in that period.
What day of the week was I born?
JavaScript's built-in Date object can determine the day of the week for any historical date. Just enter your birth date and the result will instantly show whether you arrived on a Monday, Friday, or any other day — no lookup table needed.