◷UTILITIES
Age Calculator
Calculate your age on a selected date using calendar dates rather than a rough year difference.
Enter your values
Your inputs stay in this browser.ⓘ
Privacy-friendly: your inputs are processed locally in your browser.
Formula
The calculator uses calendar arithmetic to return completed years, remaining months and remaining days.
Age = calendar difference between date of birth and selected date
How it works
1
Choose a date of birth.
2
Choose the date on which you want to know the age.
3
Review exact age and the number of days until the next birthday.
Important notes
Leap years and different month lengths are handled using calendar dates.
The “next birthday” figure is based on the selected reference date and the birth month/day.