Age Calculator Between Two Dates

Use this free age calculator between two dates to find the exact age or time between two dates in years, months and days.

How the age calculator between two dates works

The calculator subtracts the earlier date from the later one, borrowing days from the previous month when needed, and also shows the total in months, weeks and days.

Frequently asked questions

Does it include the end date?

The result counts complete days between the two dates, so the end date itself is not counted.

Can I calculate my age on a past or future date?

Yes. Enter the birth date and the date you want to calculate age on, if the calculator supports those fields.

Why can date-based ages differ by one day?

Leap years, month lengths and whether the end date is counted inclusively can affect date-interval conventions.

Results are estimates for general information only. They are not a substitute for professional advice where applicable. Found a mistake? Report an error.