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Calctive

Age Calculator

Calculate your exact age in years, months, days, and more. Find out how many days you've been alive, when your next birthday is, and discover your zodiac sign.

Input Values

Defaults to today's date

💡Quick Tips

  • •Your age in days includes all leap years since your birth
  • •The zodiac sign is based on your birth month and day
  • •Use target date to calculate your age on any specific date

Results

LIVE

Enter values and calculate

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How to Use

  1. 1Enter your birth date using the date picker
  2. 2Optionally, select a target date (defaults to today)
  3. 3Click Calculate to see your exact age and additional information
  4. 4View your age in multiple formats: years, months, weeks, days, hours, and minutes
  5. 5Discover your zodiac sign and the day of the week you were born
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Formula

Exact Age Calculation: Years = Target Year - Birth Year (adjusted for month/day) Months = Remaining months after full years Days = Remaining days after full months  Total Units: Days = (Target Date - Birth Date) / (24 * 60 * 60 * 1000) Hours = Days * 24 Minutes = Hours * 60
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Common Use Cases

Calculate exact age for birthday celebrations
Find out how many days old you are
Determine age for legal or official purposes
Calculate age difference between two people