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Excel Data validation date in next 30 days

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Using the example below, this tutorial shows how to create Data validation date in next 30 days in Excel.

Formula

=AND(A1>TODAY(),A1<=(TODAY()+days))

Explanation

Note: Excel has several built-in data validation rules for dates. This page explains how to create a your own validation rule based on a custom formula when you want more control and flexibility.

To allow only a date in the next 30 days, you can use data validation with a custom formula based on the AND, and TODAY functions.

Worked Example:   Conditional formatting gantt chart in Excel

In the example shown, the data validation applied to C5:C7 is:

=AND(C5>TODAY(),C5<=(TODAY()+30))

How this formula works

Data validation rules are triggered when a user adds or changes a cell value.

The TODAY function returns today’s date (recalculated an on on-going basis). The AND function takes multiple logical expressions and returns TRUE only when all expressions return TRUE. In this case, we need to test two conditions:

Worked Example:   How to calculate next day of week in Excel

The first condition checks that the input is greater than today:

C5>TODAY()

The second condition checks that the input is less than today + 30:

C5<=(TODAY()+30)

(Dates are just serial numbers in Excel, so we can simply add 30).

Worked Example:   AND function: Description, Usage, Syntax, Examples and Explanation

If both logical expressions return TRUE, the AND function returns TRUE and validation succeeds. If either expressions returns FALSE, data validation fails.

Note: Cell references in data validation formulas are relative to the upper left cell in the range selected when the validation rule is defined, in this case C5.

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