How Age Calculator works
Age is determined by comparing the birth date with the selected comparison date, accounting for calendar month lengths and leap years.
Calculate your exact age in years, months and days.
Calculate your exact age from your birth date instantly. Everything runs locally in your browser.
Choose your birth date.
Select an optional comparison date.
Click Calculate.
View your exact age.
Exact age calculation
Leap year support
Fast results
Privacy friendly
Age is determined by comparing the birth date with the selected comparison date, accounting for calendar month lengths and leap years.
Health calculations are estimates based on the information entered. They do not replace examination, testing or advice from a qualified healthcare professional. Results may be less representative for children, pregnancy, medical conditions or unusual circumstances unless the tool specifically states otherwise.
This tool is designed to perform its main calculation or transformation in your browser. Do not enter information that the tool does not need, and review the site's Privacy Policy for analytics, advertising and third-party services.
Answers about how the tool works, its limitations, and how your information is handled.
The calculator compares your birth date with the selected date.
Yes.
No. Everything stays in your browser.
No. The result is an informational estimate based on the inputs supported by the calculator. It does not replace advice, diagnosis or treatment from a qualified healthcare professional.
This tool is designed to perform its main calculation or transformation in your browser. Do not enter information that the tool does not need, and review the site's Privacy Policy for analytics, advertising and third-party services.
Continue with related UtilsDesk tools for the same type of task. Each tool has its own instructions, examples, methodology notes, and limitations.