Age Calculator
Calculate exact age in years, months, and days — plus next birthday and zodiac sign.
Enter your date of birth to calculate your exact age in years, months, and days — plus total days lived, next birthday countdown, day of the week you were born, and your zodiac sign.
What is Age Calculator?
Age Calculator computes your exact age from your date of birth to today in years, months, and days. It also shows your total days lived, total weeks, total months, and how many days until your next birthday.
For a bit of fun, it also shows the day of the week you were born and your zodiac sign. All calculations happen instantly in your browser using precise date arithmetic that correctly handles leap years and variable month lengths.
Common Use Cases
- Calculating exact age for official documents and forms
- Finding out how many days you have lived
- Checking how many days until your next birthday
- Discovering the day of the week you were born
- Finding your zodiac sign
How to Use Age Calculator
- Enter your date of birth using the date picker.
- Your exact age in years, months, and days appears instantly.
- Scroll down to see total days, weeks, months, next birthday countdown, day of birth, and zodiac sign.
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FAQ
How is age calculated exactly?
The calculator counts the years, months, and days from your date of birth to today. It correctly handles leap years and months of different lengths — for example, if you were born on January 31 and today is March 1, it counts the partial month accurately based on the days in February.
Can I calculate age between two specific dates?
This tool calculates your age from your birth date to today. If you want the difference between any two arbitrary dates, use the Date Difference Calculator.
How is the zodiac sign determined?
Zodiac signs are based on Western astrology and are assigned based on the calendar month and day of birth. For example, Aries is March 21 – April 19. This is for entertainment purposes only and has no scientific basis.
Is my date of birth stored or sent anywhere?
No. All calculations happen entirely in your browser. Your date of birth is never sent to any server or stored anywhere.
Does the calculator account for leap years?
Yes. The calculator uses the JavaScript Date object which correctly handles leap years, so February 29 birthdays are calculated accurately.