About This Tool
The Age Calculator gives you an exact breakdown of your age in years, months and days, based on your date of birth. It's useful for forms, eligibility checks, birthday planning, or simple curiosity about how many days you've been alive.
Frequently Asked Questions
How is age calculated?
Age is calculated by finding the difference between your date of birth and the current date (or a chosen target date), expressed in years, months and days.
Does this account for leap years?
Yes, the calculator correctly accounts for leap years and varying month lengths when computing the exact age.
Can I calculate age on a future or past date?
Yes, you can set a custom "Calculate age as of" date instead of using today's date.
Is my birth date stored anywhere?
No. All calculations happen instantly in your browser using JavaScript — your data is never sent to our servers.