How Old Am I?

Enter your date of birth to discover your exact age, zodiac signs, milestones, and more.

Date of Birth

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Your Age

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Days Alive

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Born On

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Next Birthday

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Seconds You've Been Alive

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Birthday Countdown

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Western Zodiac

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Chinese Zodiac

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Life Milestones

Famous People Born on the Same Day

How to Use

Enter your date of birth using the date picker above.
Click "Calculate" to see your precise age in years, months, and days.
View your live counter — watch your seconds alive tick upward in real time.
Discover your zodiac signs — both Western and Chinese zodiac are shown automatically.
Explore milestones and celebrities — see upcoming life milestones and famous people who share your birthday.

Frequently Asked Questions

How to calculate exact age in years, months, and days?

Enter your date of birth in the calculator above. It computes the difference between your birth date and today, accounting for varying month lengths and leap years, to give you a precise age in years, months, and days.

What day of the week was I born on?

Enter your birth date and the calculator will determine the exact day of the week you were born. This is computed using standard calendar algorithms built into the JavaScript Date object.

How many days have I been alive?

The calculator shows your total days alive from birth to today. It also displays the count in hours, minutes, and seconds, with a live-updating counter that ticks every second.

What is my zodiac sign based on my birthday?

Your Western zodiac sign is determined by which date range your birthday falls in. There are 12 signs from Aries (March 21 - April 19) through Pisces (February 19 - March 20). Each sign has associated personality traits and elements.

What is the Chinese zodiac and how does it work?

The Chinese zodiac is a 12-year cycle where each year is associated with an animal: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, and Pig. Your birth year determines your animal sign. This simplified calculator uses the Gregorian year for mapping.