Comprehensive Online Age Calculator
Calculating your precise age isn't as simple as subtracting years. Leap years, varying month lengths, and time zones make it tricky. Our Ultimate Age Calculator handles all these complexities to give you an answer down to the second.
Why use an Age Calculator?
Official Documents
Filling out visa forms, job applications, or insurance papers often requires your exact age in Years and Months.
Event Planning
Find out exactly how many days are left until a milestone birthday or anniversary to plan the perfect party.
Understanding Chronological Age
Your chronological age is the amount of time that has passed from your birth to the given date. It is your age in terms of years, months, days, etc. This is the primary way people define their age.
How Leap Years Affect Age
A common confusion happens with leap years. A year typically has 365 days, but every 4 years, we have 366 days. Our calculator algorithm accounts for every Feb 29th you've lived through, ensuring your "Total Days" count is 100% accurate.
Fun Facts About Age
- Planetary Age: A year on Mercury is only 88 Earth days. If you are 20 on Earth, you would be roughly 83 years old on Mercury!
- Biological Age: This can differ from your chronological age based on your health, diet, and lifestyle.
- Korean Age: In traditional Korean culture, you are considered 1 year old the day you are born, and everyone ages one year on New Year's Day (though this system is now changing).
Frequently Asked Questions
Does this calculator save my birth date?
No. All calculations happen instantly in your browser. We do not store or transmit your personal date of birth.
How is the "Next Birthday" calculated?
We take your birth month and day and project it to the current or next year. If your birthday has already passed this year, we calculate the days remaining until next year's date.