Age Calculator
Calculate exact age from birth date.
Date of Birth
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Years / Months / Days
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Next Birthday
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Zodiac Sign
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Calculate your exact age in years, months, and days. Find your next birthday, zodiac sign, and details instantly client-side in your browser.
How to use it
- Enter the date of birth.
- Calculate to see the age in years, months and days.
- Read the total days, the next birthday and the zodiac details.
Frequently asked questions
How is the age calculated?
By calendar difference, not by dividing days by 365. That is why the result stays correct across leap years.
What if the birthday is on 29 February?
The calculation still works. In common years the anniversary is treated as falling on 1 March for counting purposes.
Which zodiac signs are shown?
The western sign, taken from the date within the year, and the Chinese zodiac animal, taken from the birth year.