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Date & time

Days between dates

Calculate calendar days between two dates, with an option to include both endpoints.

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01

Your inputs

The starting values are an example.

Decimals: 12.5 · Thousands: 1,234.56. Follow the field instructions for lists.

02

Your result

Enter your values and select Calculate.

Your calculation will appear here.

Your result will include the relevant values and units.

Understand the calculation

Formula and example

How it is calculated

Calendar days = end date − start date; including both endpoints: difference + 1

Worked example

There are 30 days from 1 January to 31 January, or 31 days when both endpoints are included.

Things to check

  • This counts calendar days. Public holidays, working days and employment-law deadlines are excluded.