Age Calculator by Date of Birth
Most calculators stop at "Years." We go deeper. Calculate your age in Seconds, find your Ruling Planet, and track your next birthday.
Birth Details
Select your birth date & time to begin
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Exact Duration
We account for every leap year, month length variance, and time zone shift to give you an age accurate to the second.
Astrological Data
Beyond numbers, discover your Western Zodiac sign and your Ruling Planet (e.g., Mars for Aries, Venus for Libra).
Next Birthday
See a live countdown to your next celebration. Know exactly how many days, hours, and minutes are left.
How to use this calculator
Select your Date of Birth
Use the calendar picker to select the exact day, month, and year you were born.
Enter Time of Birth (Optional)
For precision down to the second, enter your birth time. If unknown, it defaults to 12:00 PM.
View Your Life Timeline
Instantly see your age in total weeks, days, and seconds, along with your Zodiac and Ruling Planet.
Browse by Birth Year
1980s
1990s
2000s
2010s
2020s
Frequently Asked Questions
Everything you need to know about age calculation logic.
How is age calculated accurately considering leap years?
Our calculator uses the precise Gregorian calendar logic. It accounts for every leap year (366 days) that has occurred since your birth, ensuring your 'Total Days Alive' count is mathematically perfect.
What is the difference between Chronological Age and Biological Age?
Chronological age is the exact amount of time you have been alive (what this tool calculates). Biological age refers to how fast your body is aging based on health, diet, and genetics.
How do you determine the Ruling Planet?
Your Ruling Planet is determined by your Zodiac sign. For example, if you are a Leo, your ruler is the Sun. If you are a Scorpio, your traditional ruler is Mars (modern is Pluto). This tool provides your ruling planet instantly.
Why does the time of birth matter?
Entering your time of birth allows us to calculate your age down to the exact second. It also refines astrological data, as zodiac cusps change at specific times of the day.