Age Calculator
Exact age in years, months, days
Use this when you need a fast, accurate result — no sign-up, works entirely in your browser.
Your age—
Total days—
How to Use
- Enter your details into the fields above.
- Click the calculate button to get your result instantly.
- Use the clear button to start a new calculation.
Example
- Date of birth 1990-06-15 (measured on 2026-06-15) → 36 years old — 13,149 days lived
- Date of birth 1975-11-30 (measured on 2026-06-15) → 50 years old — 18,460 days lived
Formula
Age in years = current year − birth year, minus 1 if the birthday has not occurred yet this year (same month but earlier day also counts as "not yet"). Total days = floor((today − birth date) ÷ 86,400,000 ms). The tool always measures against today's date, so both numbers grow over time.
About Age Calculator
Exact age in years, months, days. This free online tool gives you fast, accurate results without registration or downloads.
Everything runs locally in your browser, so your data is never uploaded or stored — privacy first.
Frequently Asked Questions
Is the Age Calculator free to use? +
Yes, it is completely free with no registration or download required.
Is my date data private? +
Yes. All date calculations happen locally in your browser. Nothing is uploaded or stored.
Does the Age Calculator account for time zones? +
For time-based tools, calculations use your local device time. Date tools operate on the dates you enter.