Age Calculator Online
Find age milestones and time duration gaps.
Runs entirely in your browser
Years—
Months—
Days—
Pick a birthdate above to see the breakdown
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How to use Age Calculator
- 1Enter your date of birth using the date picker.
- 2Your exact age is calculated instantly in years, months, and days.
- 3The next birthday countdown and total days lived are also displayed.
Privacy & security
Age calculation runs in your browser using JavaScript's date functions. Your birthdate is never transmitted to any server.
Your birthdate is processed entirely in your browser. No date information is transmitted.
Frequently asked questions
How accurate is the age calculation?
The calculation accounts for leap years and varying month lengths, giving an exact result in years, months, and days.
Can I calculate the age between two arbitrary dates?
Yes — you can set a custom 'as of' date to calculate time elapsed between any two dates, not just today.
What format should I enter the birthdate in?
Use the date picker for easy selection. You can also type in YYYY-MM-DD format for any date going back centuries.