TOOLS / CALC-01

Age Calculator

Enter a birth date to see the exact age, total days lived, and time left until the next birthday.

Enter dates
Result
years months days
Total days lived
Total weeks lived
Total months lived
Days to next birthday

How to calculate age online

Pick your date of birth, and optionally change "Calculate age as of" if you want your age on a specific date rather than today. The result updates instantly, showing your age broken down into years, months and days, along with total days lived and a countdown to your next birthday.

Frequently asked questions

Does this account for leap years?

Yes — the calculation is based on actual calendar dates, so leap years are automatically handled correctly.

Can I calculate age as of a past or future date?

Yes — change the "Calculate age as of" field to any date to see the age on that specific day.