Age Calculator — Calculate Your Exact Age

How to Use the Age Calculator

1. Enter your date of birth using the date picker.
2. Optionally enter a second person's birth date to compare ages.
3. Click Calculate to see your exact age in years, months, and days.
4. View additional details: total days lived, day of the week you were born, zodiac sign, and next birthday countdown.

Why Use This Age Calculator

Calculating your precise age goes beyond just knowing the year. This free age calculator gives you the exact number of years, months, and days you have been alive — no rounding, no approximations. Whether you need it for official paperwork, medical forms, or simply curiosity, you get the precise answer instantly.

Beyond the basics, the calculator reveals fascinating details: your Western and Chinese zodiac signs, birth stone, birth flower, and a countdown to your next birthday. The two-person comparison mode lets you calculate the age difference between any two people down to the day.

Frequently Asked Questions

• How is age calculated exactly?
  Age is calculated from your date of birth to today's date. It counts complete years, then the remaining complete months, then the remaining days — not just calendar year differences.
• Does it account for leap years?
  Yes. The calculator correctly handles February 29 birthdays and leap year day counting, so your total days figure is always accurate.
• Can I calculate age for a past or future date?
  Yes — you can set a custom "as of" date to calculate how old someone was or will be on any specific date.
• Is my birth date stored anywhere?
  No. All calculation happens in your browser. No data is sent to any server or stored in any database.