How to Calculate Your Age
Calculating your exact age is more than just subtracting your birth year from the current year. Your precise age depends on whether your birthday has already occurred this year, and accounts for the exact number of months and days. Our age calculator does this instantly — just enter your date of birth and get your age in years, months, and days.
Whether you need your age for official documents, medical forms, or simply out of curiosity, this tool gives you an accurate answer in seconds. It also shows your total days lived, days until your next birthday, and your zodiac signs.
Frequently Asked Questions
How old am I in days?
Enter your birth date above and the calculator instantly shows the total number of days you have lived. For example, a 30-year-old has lived approximately 10,957 days.
How do I calculate my exact age?
Select your birth month, day, and year. The calculator instantly shows your age in years, months, and days, accounting for varying month lengths and leap years.
How many weeks old am I?
Divide your total days lived by 7 to get your age in weeks. A 25-year-old is approximately 1,304 weeks old.
What is my zodiac sign?
After entering your birth date, the calculator displays both your Western zodiac sign (based on birth month and day) and Chinese zodiac animal (based on birth year).
Can I calculate the age difference between two people?
Use this calculator to find each person's exact age, then compare the results. For a dedicated tool, try our age difference calculator (coming soon).
How accurate is this age calculator?
This calculator is accurate to the day. It accounts for leap years and varying month lengths to give you a precise result based on today's date.
What is Korean age?
In the traditional Korean age system, you are 1 year old at birth and gain a year every January 1st. Try our Korean age calculator to find out your Korean age.