Age Calculator
Enter a date of birth to find the exact age in years, months and days as of today. Useful for forms, eligibility checks and birthday planning.
How to Use the Age Calculator
- Pick or type the date of birth in the date field.
- The result panel shows the age in years, months and days as of today.
- Copy the result if you need to paste it elsewhere.
Example
- Input
- Date of birth: 15 March 1990 (calculated on 22 October 2026)
- Output
- 36 years, 7 months, 7 days
About the Age Calculator
An age calculator is handy when a form asks for an exact age, when checking age requirements, or when working out how old someone will be on a particular day. Parents, HR teams and anyone filling out paperwork use it.
The age is calculated against the current date on your device, so the result changes from day to day. Months are counted as calendar months, and leftover days are counted using the length of the previous month.
Frequently Asked Questions
Which date is the age calculated against?
Today’s date, taken from your device’s clock and time zone.
Can I calculate my age on a future date?
Not at the moment. The calculator always uses today’s date as the end date.
How are months and days counted?
Whole calendar months are counted first. Any remaining days are counted using the length of the previous month, which matches how most people count age.
Is my date of birth stored?
The calculation runs in your browser with JavaScript, and this tool does not send what you enter to a Usevanta server.
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