You can use the following formulas in Excel to convert days to weeks:

**Method 1: Convert Days to Weeks with Decimals (e.g. 16 days = 2.2857 weeks)**

=(B2-A2)/7

**Method 2: Convert Days to Whole Weeks (e.g. 16 days = 2 weeks)**

=ROUNDDOWN(DATEDIF(A2, B2, "d")/7, 0)

Both formulas assume the start date is in cell **A2** and the end date is in cell **B2**.

The following examples show how to use each formula in practice with the following list of start and end dates in Excel:

**Example 1: Convert Days to Weeks with Decimals**

We can use the following formula to find the number of weeks between the start and end dates in cells **A2** and **B2**, respectively:

=(B2-A2)/7

We can type this formula into cell **C2** and then click and drag it down to every remaining cell in column C:

Column C shows the number of weeks (including decimal places) between each start and end date.

For example:

- There are
**2.2857**weeks between 1/1/2022 and 1/17/2022. - There are
**19.1429**weeks between 2/1/2022 and 6/15/2022. - There are
**25.2857**weeks between 3/1/2022 and 8/25/2022.

And so on.

**Example 2: Convert Days to Whole Weeks**

We can use the following formula to find the number of whole weeks between the start and end dates in cells **A2** and **B2**, respectively:

=ROUNDDOWN(DATEDIF(A2, B2, "d")/7, 0)

We can type this formula into cell **C2** and then click and drag it down to every remaining cell in column C:

Column C shows the number of whole weeks between each start and end date.

For example:

- There are
**2**whole weeks between 1/1/2022 and 1/17/2022. - There are
**19**whole weeks between 2/1/2022 and 6/15/2022. - There are
**25**whole weeks between 3/1/2022 and 8/25/2022.

And so on.

**Note**: This formula works by first using **DATEDIF** to calculate the difference between the dates in days, then divides by 7 to get the difference in weeks, then uses **ROUNDDOWN** to round down to the nearest integer.

**Additional Resources**

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

How to Convert Days to Months in Excel

How to Calculate Days Between Date and Today in Excel

How to Calculate the Difference Between Two Dates in Excel