Date Calculator — Days Between Dates

Find out how many days there are between two dates, or add and subtract days, weeks, months or years from any date.

How to use the date calculator

To find the days between two dates, choose the start and end date. The result updates automatically.
Tick Include the end date if you want to count both the first and the last day.
To add or subtract time, choose a date, an amount and a unit (days, weeks, months or years).

Days is the exact number of calendar days between the dates.
Business days counts Monday to Friday only and does not remove public holidays.
When you add months to a date like January 31, the result uses the last day of a shorter month, so adding one month gives February 28 (or 29).

How many days are there between two dates?

Choose the start and the end date. The calculator shows the exact number of days, plus weeks, months and years.

How do I count business days?

The business days result counts Monday to Friday between the two dates. Public holidays are not excluded.

How do I add 90 days to a date?

In the second box choose the date, keep "Add", enter 90 and select Days.

Should I include the end date?

Tick the box if both the first and last day should count, for example when counting the days of a trip.