How to Calculate 90 Days from Date in Excel (With Examples)


You can use the following formulas in Excel to calculate the date that is 90 days from a specific date:

Method 1: Calculate 90 Days from Specific Date

=A2+90

This particular example will return the date that is 90 days after the date in cell A2.

Method 2: Calculate 90 Business Days from Specific Date

=WORKDAY(A2, 90)

This particular example will return the date that is 90 business days after the date in cell A2.

Note: Business days only include the days between Monday and Friday.

The following examples show how to use each method in practice with the following list of dates in Excel:

Example 1: Calculate 90 Days from Specific Date

We can type the following formula into cell B2 to return the date that is 90 days after the date in cell A2:

=A2+90

We can then click and drag this formula down to each remaining cell in column B:

Excel calculate 90 days from date

Each cell in column B displays the date that is 90 days after the corresponding date in column A.

For example:

  • 90 days after 1/1/2024 is 3/31/2024.
  • 90 days after 1/5/2024 is 4/4/2024.
  • 90 days after 2/17/2024 is 5/17/2024.

And so on.

Example 2: Calculate 90 Business Days from Specific Date

We can type the following formula into cell B2 to return the date that is 90 business days after the date in cell A2:

=WORKDAY(A2, 90)

We can then click and drag this formula down to each remaining cell in column B:

Excel calculate 90 business days from date

Each cell in column B displays the date that is 90 business days after the corresponding date in column A.

For example:

  • 90 business days after 1/1/2024 is 5/6/2024.
  • 90 business days after 1/5/2024 is 5/10/2024.
  • 90 business days after 2/17/2024 is 6/21/2024.

And so on.

Note #1: If the formula returns a numeric value then you need to click the Number Format dropdown menu on the Home tab along the ribbon and then click Short Date to format the number as a date.

Note #2: You can find the complete documentation for the WORKDAY function in Excel here.

Additional Resources

The following tutorials explain how to perform other common operations in Excel:

How to AutoFill Dates in Excel
How to Group Data by Month in Excel
How to Calculate the Difference Between Two Dates in Excel

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