🎂 CALCULATORS
Age Calculator
Enter your date of birth — get your exact age plus total days, zodiac sign, and next birthday.
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Enter your date of birth above to see
your exact age and fun stats.
Enter your date of birth — get your exact age plus total days, zodiac sign, and next birthday.
Enter your date of birth above to see
your exact age and fun stats.
An age calculator takes your date of birth and subtracts it from today's date to give you your exact age. Unlike a simple year subtraction, a precise calculator accounts for whether your birthday has occurred yet this calendar year, the varying lengths of months, and leap years — ensuring the years, months, and days are always accurate to today's date.
This tool also converts your age into lifetime totals: total days lived, total months, and total hours. These figures update automatically based on today's date, so you always get a fresh result.
Exact to the day
Precise calculation down to the current day, accounting for leap years and month lengths.
6 lifetime totals
See your age expressed as total days, months, and hours — not just years.
Day of the week
Find out which day of the week you were born on.
Zodiac sign
Automatically calculates your Western zodiac sign based on your birthday.
Next birthday countdown
Shows how many days until your next birthday, highlighted orange when it's within a week.
No data stored
Everything runs client-side. Your birthdate never leaves your browser.
How does the age calculator work?
The tool subtracts your date of birth from today's date using JavaScript's Date object. It accounts for month lengths and leap years to give you the exact breakdown in years, months, and remaining days.
Does the age calculator account for leap years?
Yes. The calculation uses actual calendar dates, so February 29 birthdays are handled correctly, and leap year days are included in the total day count.
How is the total hours count calculated?
Total hours is simply total days multiplied by 24. It doesn't account for daylight saving time shifts, but it's accurate to within a few hours for practical purposes.
How accurate is the zodiac sign?
The tool uses the standard Western (tropical) zodiac with the most commonly published date ranges. Edge cases on cusp dates (e.g., March 20 vs 21) may vary by source.
Can I use this to calculate someone else's age?
Yes. Just enter any past date of birth — your own, a family member's, or even a historical figure's. The tool works for any valid past date.
Why do I need to know my age in days?
The total day count is useful for medical calculations (e.g., "how many days old is my baby"), for fun facts, and for percentage-of-life-spent calculations. Some insurance and legal contexts also count in days.
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