Calculate Chronological Age is an independent website that provides a free and simple tool for calculating age between a date of birth and a selected date.
The calculator can show age in years, months, days, weeks, and total days. It can also help users calculate age on a school cutoff date, assessment date, birthday, or another reference date.
Why We Created This Website
Calculating exact age manually can be confusing because months have different lengths and leap years include an extra day.
This website was created to make chronological age calculations clear, quick, and accessible.
What You Can Do
You can use the calculator to:
Calculate your current age
Calculate age on a past or future date
Find age in years, months, and days
View total weeks and total days
Check the time remaining until your next birthday
Calculate a child’s age on a school or assessment date
We also publish helpful guides about chronological age, adjusted age, school cutoff dates, Excel formulas, and related date calculations.
Accuracy and Independence
We aim to keep the calculator accurate and easy to use. However, results should be verified before they are used for official, medical, educational, legal, or professional purposes.
Calculate Chronological Age is not affiliated with, sponsored by, or endorsed by Pearson, ASQ, Little League, Microsoft, or any other organization mentioned on this website.
Privacy
You do not need to create an account to use the calculator. We do not intentionally ask users to submit or store their date of birth.
Please read our Privacy Policy for information about cookies, analytics, advertising, and third-party services.
Get in Touch
Have a question, suggestion, or correction? We welcome your feedback.
Please visit our Contact page to report a calculation issue, suggest an improvement, or ask a question about the website.