Calculate your exact age in years, months, weeks, days — or the time between any two dates.
An age calculator is useful in many everyday situations: checking eligibility for a driver's license or voting, calculating retirement dates, tracking a baby's development in weeks, or figuring out how old you'll be on a future date. It can also calculate the age difference between two people or the exact time elapsed between two significant life events.
Age is calculated by comparing the birth date to the target date, accounting for differences in years, months, and days. If the day of the target date is earlier in the month than the birth day, months are borrowed from the year.
Yes. Set your desired start date as the "birth date" and any future or past date as the target to calculate exact time elapsed.
Yes. JavaScript's Date object handles leap years, February 29, and all calendar edge cases automatically.
No. All calculations happen entirely in your browser. Nothing is sent to any server.