For more information on array formulas, see Guidelines and examples of array formulas. This type of array formula can simplify a worksheet model by replacing several different formulas with a single array formula. Array formulas use standard formula syntax. For example, this formula calculates the total value of an array of stock prices and shares, and places the result in the cell next to "Total Value. The formula first multiplies the shares cells B2 — F2 by their prices cells B3 — F3 , and then adds those results to create a grand total of 35, This is an example of a single-cell array formula because the formula lives in just one cell.

In the following example, the formula multiples shares by price in each column, and the formula lives in the selected cells in row 5. If you need to include new data in your array formula, see Expand an array formula.

## Matrix Multiplication in Excel | EngineerExcel

You can also try:. Rules for changing array formulas they can be finicky. Use array constants in array formulas they can be handy. Name an array constant they can make constants easier to use.

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If you want to play around with array constants before you try them out with your own data, you can use the sample data here. The workbook below shows examples of array formulas. To best work with the examples, you should download the workbook to your computer by clicking the Excel icon in the lower-right corner, and then open it in the Excel desktop program.

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Copy the table below and paste it into Excel in cell A1. In the sample workbook, select cells E2 through E These cells will contain your results. Enter this formula.

To enter it in a cell, just start typing press the equal sign and the formula appears in the last cell you selected. You can also enter the formula in the formula bar:. The formula multiplies the values in the cell ranges C2:C11 and D2:D11, then adds the results to calculate a grand total.

In Excel for the web, you can view array formulas if the workbook you open already has them. HubSpot uses the information you provide to us to contact you about our relevant content, products, and services. You may unsubscribe from these communications at any time. For more information, check out our privacy policy. For most marketers, trying to organize and analyze spreadsheets in Microsoft Excel can feel like walking into a brick wall over and over again.

You're manually replicating columns and scribbling down long-form math on a scrap of paper, all while thinking to yourself, "There has to be a better way to do this. Excel can be tricky that way. On the one hand, it's an exceptionally powerful tool for reporting and analyzing marketing data.

On the other, without the proper training, it's easy to feel like it's working against you. For starters, there are more than a dozen critical formulas Excel can automatically run for you so you're not combing through hundreds of cells with a calculator on your desk. You might wonder what the "Formulas" tab on the top navigation toolbar in Excel means. In more recent versions of Excel, this horizontal menu -- shown below -- allows you to find and insert Excel formulas into specific cells of your spreadsheet. Nonetheless, the suite of icons above is a handy catalog of formulas you can browse and refer back to as you hone your spreadsheet skills.

Excel formulas are also called "functions.

## Excel array formulas, functions and constants - examples and guidelines

That browsing window will look like this:. Want a more sorted browsing experience? Once you've found the formula that suits your needs, click "Insert Function," as shown in the window above. To help you use Excel more effectively and save a ton of time , we've compiled a list of essential formulas, keyboard shortcuts, and other small tricks and functions you should know. If you're using a slightly older version of Excel, the location of each feature mentioned below might be slightly different.

The SUM formula in Excel is one of the most basic formulas you can enter into a spreadsheet, allowing you to find the sum or total of two or more values. The values you enter into the SUM formula can either be actual numbers or equal to the number in a specific cell of your spreadsheet. Keep in mind you can also find the total value of a list of numbers in Excel.

Note the colon between both cells, rather than a comma. See how this might look in an Excel spreadsheet for a content marketer, below:.

## How do array formulas work in Google Sheets?

This allows you to enter a text value into the cell "if" something else in your spreadsheet is true or false. There are times when we want to know how many times a value appears in our spreadsheets. But there are also those times when we want to find the cells that contain those values, and input specific data next to it. We'll go back to Sprung's example for this one. If we want to award 10 points to everyone who belongs in the Gryffindor house, instead of manually typing in 10's next to each Gryffindor student's name, we'll use the IF-THEN formula to say: If the student is in Gryffindor, then he or she should get ten points.

To convert the resulting decimal value to a percentage, highlight the cell, click the Home tab, and select "Percentage" from the numbers dropdown. There isn't an Excel "formula" for percentages per se, but Excel makes it easy to convert the value of any cell into a percentage so you're not stuck calculating and reentering the numbers yourself. The basic setting to convert a cell's value into a percentage is under Excel's Home tab. Select this tab, highlight the cell s you'd like to convert to a percentage, and click into the dropdown menu next to Conditional Formatting this menu button might say "General" at first.

### Download our examples

Then, select "Percentage" from the list of options that appears. This will convert the value of each cell you've highlighted into a percentage. See this feature below. Simply highlight your cells before or after you perform this formula, and set these cells' format to "Percentage" from the Home tab -- as shown above. This will subtract a cell using the SUM formula by adding a negative sign before the cell you're subtracting.

Like percentages, subtracting doesn't have its own formula in Excel either, but that doesn't mean it can't be done. You can subtract any values or those values inside cells two different ways. This formula uses an asterisk to multiply cell A1 by cell B1. You might think multiplying values in Excel has its own formula or uses the "x" character to denote multiplication between multiple values.

To multiply two or more values in an Excel spreadsheet, highlight an empty cell. The asterisk will effectively multiply each value included in the formula. Press Enter to return your desired product. See how this looks in the screenshot above. Division in Excel is one of the simplest functions you can perform. This formula will return a date that corresponds to the values entered in the parentheses -- even values referred from other cells.

Creating dates in the cells of an Excel spreadsheet can be a fickle task every now and then. Luckily, there's a handy formula to make formatting your dates easy. There are two ways to use this formula:. But what about multiple ranges? How do you find the combined value of a large group of cells? Numerical arrays are a useful way to perform more than one formula at the same time in a single cell so you can see one final sum, difference, product, or quotient. If you're looking to find total sales revenue from several sold units, for example, the array formula in Excel is perfect for you.

Here's how you'd do it:. In revenue calculations, this can cut down on your time and effort significantly. See the final formula in the screenshot above. This formula will return a value that is equal to the number of entries found within your desired range of cells. The COUNT formula in Excel is particularly useful for large spreadsheets, wherein you want to see how many cells contain actual entries. Don't be fooled: This formula won't do any math on the values of the cells themselves.

This formula is simply to find out how many cells in a selected range are occupied with something. Using the formula in bold above, you can easily run a count of active cells in your spreadsheet. The result will look a little something like this:. This will calculate the average of all the values or range of cells included in the parentheses.

Finding the average of a range of cells in Excel keeps you from having to find individual sums and then performing a separate division equation on your total. For reference, the average of a group of numbers is equal to the sum of those numbers, divided by the number of items in that group.