Age Calculator
About the Age Calculator
Need to know exactly how old someone is today, on a visa form date, or at a future milestone? This age calculator turns a date of birth and a target date into a precise age breakdown you can trust for school enrollment, insurance quotes, legal filings, and family records. Unlike guessing from birth year alone, it counts completed years, months, and days using calendar rules so leap years and month lengths are handled correctly. You also get supporting totals such as weeks lived and hours elapsed, plus a next-birthday countdown that updates from your chosen target date.
How to use it
- Enter the date of birth in the first field using the calendar picker or keyboard.
- Set the "Age on date" field to today or any future/past reference date.
- Click Calculate age to generate the full breakdown instantly.
- Review years, months, days, weeks, hours, and the next birthday countdown.
- Use Copy result to paste the summary into forms, emails, or notes.
Good to know
Results are calendar math from the dates you enter. Business-day tools skip weekends when they say so. They do not know local holidays unless the page says they do.
Frequently asked questions
Is the Age Calculator free?
Yes. You can use it in your browser with no account and no download.
Does this age calculator include months and days?
Yes. Results show years, months, and days, plus optional week and hour totals.
Can I calculate age on a future date?
Yes. Set the age-on date to any future day to see how old someone will be then.
How is age counted for leap-day births?
Leap-day births use standard calendar rules; age on 28 Feb or 1 Mar in non-leap years follows documented conventions.
Is my date of birth sent to a server?
No. All math runs locally in your browser.
Related
Saved settings stay in this browser. Read the privacy policy and terms.