Age Calculator
Calculate your exact age in years, months, days, hours, and weeks. Discover your zodiac sign, the day you were born on, and how many days until your next birthday.
How to Use This Age Calculator
Our free online age calculator helps you determine your exact age down to the day, along with fun facts like total hours lived, your zodiac sign, and a countdown to your next birthday. All calculations are performed entirely in your browser -- no data is sent to any server.
Step-by-Step Instructions
- Enter your date of birth using the date picker.
- Optionally change the "Calculate Age As Of" date -- it defaults to today, but you can set any date to see what your age was or will be on that day.
- Click "Calculate Age" to see your detailed age breakdown.
Understanding the Results
The calculator displays your age in years, months, and days as the primary result. Below that you will find the total months, weeks, days, and hours you have lived. It also shows how many days remain until your next birthday, the day of the week you were born on, and your Western zodiac sign based on your birth date.
Frequently Asked Questions
How is the exact age calculated?
The calculator computes the difference between your date of birth and the target date. It accounts for varying month lengths and leap years to give you an accurate result in years, months, and days.
Can I calculate my age on a specific date?
Yes. Change the "Calculate Age As Of" field to any date -- past or future. This lets you find out your age on a specific historical date or see how old you will be on a future date.
How is the zodiac sign determined?
Your Western zodiac sign is determined by the month and day of your birth. There are 12 zodiac signs, each spanning roughly one month. For example, if you were born between March 21 and April 19, your zodiac sign is Aries.
Does the total hours calculation account for leap years?
Yes. The total days (and therefore hours) calculation uses the actual calendar difference between your birth date and the target date, which naturally includes any leap days that occurred in between.
Is my date of birth stored or shared?
No. All calculations happen entirely in your browser. Your date of birth is never sent to a server, stored in a database, or shared with anyone.