Free Online Age Calculator by Date of Birth
Welcome to the most accurate Age Calculator on the web. This tool allows you to determine your exact chronological age in years, months, and days. Unlike simple calculators that only show the year, our utility breaks down the time duration into weeks, hours, minutes, and even seconds.
How to use this Age Calculator?
Calculating your exact age is simple:
- Select your Date of Birth: Enter the day, month, and year you were born.
- Select the Target Date: By default, this is set to today ("Age at the Date of"). However, you can change this to a future date to see how old you will be on a specific event, or a past date to calculate your age at that time.
- Click Calculate: Instantly view your age breakdown above the tool.
Why do I need to know my age in weeks or days?
While we usually track age in years, there are many reasons to need a more precise calculation:
- Health & Fitness: Many medical charts and fitness programs require age in months for infants or toddlers.
- Legal Documents: calculating the exact day someone turns 18 or 21 for legal eligibility.
- Fun Facts: Find out exactly how many days you have been alive (e.g., celebrating your 10,000th day on earth!).
How is age calculated manually?
To calculate age manually, you subtract your birth date from the current date. However, this gets tricky because months have different numbers of days (28, 30, or 31) and leap years occur every 4 years. This online age calculator handles all those complex calendar variables for you instantly, ensuring 100% accuracy.