Accurate Age Calculator
Instantly calculate age from a date of birth or find the precise time difference between two dates. Discover extra details like the day you were born and how long until your next birthday!
Enter Dates
Calculation Results
Your Age:
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Total Days Lived:
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Born on a:
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Next Birthday in:
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How to Use the Age Calculator
Using our free online Age Calculator is simple:
- Enter the Date of Birth using the calendar input.
- Optionally, select a second date under Calculate Age as of. If you leave this blank, the calculation will use today's current date.
- Click the "Calculate Age" button.
- View your detailed results, including age in years/months/days, total days, day of birth, and time until your next birthday.
Features of Our Calculator
This tool goes beyond simple age calculation:
- Precise Chronological Age: Calculates age accurately down to the day.
- Date Difference: Finds the exact time elapsed between any two dates.
- Total Time Lived: See your age expressed in total days, weeks, or months.
- Day of the Week: Discover the day of the week you were born (e.g., Monday, Tuesday).
- Next Birthday Countdown: See exactly how many months and days remain until your next birthday.
- Leap Year Aware: Calculations correctly account for leap years.
- User-Friendly Interface: Clean, simple, and works perfectly on all devices.
Understanding Age Calculation
Calculating age seems simple, but getting the months and days precise requires careful logic, especially around month ends and leap years. Our calculator determines the number of full years passed, then the full months within the remaining fraction of a year, and finally the remaining days. We also provide fun facts like the day of the week you were born, adding a bit more insight than just a number.