Age Calculator
Calculate your exact age in years, months, days, hours, minutes and seconds. Get your next birthday countdown and calculate age on any specific date. 100% private and accurate.
Select your birth date to calculate your age
Enter a birth date first
Accurate Calculations
Handles leap years and all date complexities with precision.
Multiple Units
View your age in years, months, days, hours, minutes, and seconds.
100% Private
All calculations happen in your browser. No data is stored or shared.
Frequently Asked Questions
How does the age calculator work?
Simply enter your birth date using the date picker, and the calculator instantly shows your exact age in years, months, and days, plus total weeks, hours, minutes, and seconds since birth.
Does the calculator account for leap years?
Yes! The calculator uses the date-fns library which properly handles leap years and all calendar complexities, ensuring accurate age calculations.
What does the next birthday countdown show?
The countdown shows exactly how many days remain until your next birthday. If your birthday is within 7 days, it will be highlighted as an upcoming celebration.
Can I calculate my age on a specific date?
Absolutely! Use the optional "Calculate age on date" field to see how old you were on any past date or how old you will be on a future date.
Is my birth date stored or shared?
No. All calculations happen entirely in your browser. Your birth date is never stored, sent to a server, or shared with anyone.