Dave Bruns

When XLOOKUP can't find a value in a lookup array, it returns an #N/A error. You can use the IFNA function or IFERROR function to trap this error and return a different...Read more

In this example, the goal is to generate a list of random numbers without duplicates. This involves jumping through a few hoops because although the RANDARRAY function can easily generate a list of random integers, there is no guarantee that the numbers will be unique. In the explanation below,...Read more

In this example, the goal is to calculate the previous Sunday based on any given date. At a high level, this means we need to subtract some number of days from the given date. For example, if the given date is a Monday, we need to subtract 1 day. If the given date is a Tuesday, we need to...Read more

The goal is to identify dates in column B that fall between a given start date and end date. The start and end dates are exposed as inputs on the worksheet that can be changed at any time, labeled "Start" and "End" in the example shown.

Named ranges

For convenience, both...Read more

In this example, the goal is to calculate various percentages of the number in cell B5. This is a straightforward calculation in Excel. The main task is to correctly enter the numbers in column D as percentages. Once that is done, you can multiply the percentage by the number.

The first...Read more

Note: This example assumes the start date will be provided as the first of the month. See below for a formula that will automatically return the first day of the current month.

In this example, the goal is to generate a dynamic calendar for any given month, based on a start date...Read more

In this example, the goal is to retrieve the current stock price for the companies listed in Column B. Note these cells in the range B5:B16 have already been converted to the "Stocks" Data Type. Once the Stocks Data Type is available on the worksheet, you can...Read more

In this example, the goal is to use VLOOKUP to retrieve the price for a given item based on three criteria: name, size, and color, which are entered in H5:H7. For example, for a Blue Medium T-shirt, VLOOKUP should return $16.00.

The VLOOKUP function...Read more

In this example, the goal is to perform a case-sensitive lookup on Color with VLOOKUP. In other words, a lookup value of "RED" must return a different result from a lookup value of "Red". This presents several challenges. First, Excel is not case-sensitive by default...Read more