Calculate exact age from date of birth in years, months, and days.

This page gives you a clean age calculator with the exact age breakdown plus quick reference totals. Use it to check age today, age on a future date, or age on any specific date after birth.

How it works

What the calculator includes

The result shows exact age in completed years, months, and days. It also adds total completed months, completed weeks, total days lived, and the next birthday timing so you can answer both casual and formal age questions from one tool.

Common uses

When this age calculator is useful

It is useful for birthdays, form filling, school admissions, HR paperwork, travel checks, insurance, and any situation where exact age matters rather than an approximate year count.

How does the age calculator work?

Enter a date of birth and an "age on" date. The calculator returns the exact difference in years, months, and days, plus supporting totals.

Can I calculate age on a past or future date?

Yes. The second date field lets you check age on any date after the date of birth.

Does it show total days and total weeks too?

Yes. The page includes total days lived, completed months, completed weeks, and the next birthday timing.

What happens with birthdays like February 29?

For non-leap years, the calculator treats the next birthday reference conservatively so it still returns a clear upcoming birthday result.