# Excel MMULT Function: Syntax, Examples & Tips - URL: https://betteranalyst.com/excel/mmult-function - Author: Better Analyst Formula Bot is now Better Analyst—same account, more powerful analysis.Formula Bot is now Better Analyst—same account and workflows, with more powerful analysis, dashboards, and automation. [Learn what changed](https://betteranalyst.com/formula-bot-is-now-better-analyst) The MMULT function multiplies two arrays (matrices) in Excel, enabling advanced data analysis through matrix operations. ```excel =MMULT(array1, array2) ``` Generate FormulaExplain Formula One free generation or explanation per browser, shared across Excel and Google Sheets. Account usage limits apply afterward. Describe the MMULT you need in plain EnglishGenerate Formula Need more than a single MMULT formula? Try our free [AI for Excel](https://betteranalyst.com/excel-ai) — it reads your entire spreadsheet, answers questions in plain English, and builds charts and analysis in the same chat. ## Parameters **`array1`**:\ The first array or range of cells that you want to multiply. This array must have the same number of columns as the number of rows in `array2`. **`array2`**:\ The second array or range of cells that you want to multiply. This array must have the same number of rows as the number of columns in `array1`. ## What is an MMULT Formula in Excel? The *MMULT* function in Excel is a powerful tool that allows you to perform matrix multiplication. It takes two arrays (or ranges) as input and returns the product of the two matrices. This function is particularly useful in advanced calculations, such as solving systems of equations or performing linear algebra operations. In simpler terms, the MMULT function helps you multiply two sets of numbers in a structured way, making it easier to work with complex data. ## A Practical Example Imagine you are analyzing the performance of different products across various sales channels, and you have the following data in an Excel spreadsheet: ### Sales Data Table: | Product | Channel A | Channel B | | - | - | - | | Product 1 | 10 | 20 | | Product 2 | 30 | 40 | | Product 3 | 50 | 60 | You want to find the total sales for each product across both channels. ## MMULT Formula To calculate the total sales for each product, you would use the MMULT formula as follows: ```excel =MMULT(B2:C4, TRANSPOSE({1;1})) ``` ### Breakdown of the Formula: - **B2:C4**: This is the range of the sales data for Channel A and Channel B. - **TRANSPOSE({1;1})**: This creates a vertical array of ones that allows the MMULT function to sum the sales across the two channels for each product. ## Result of the Formula When you apply the formula, it calculates the total sales for each product across both channels. The output would be: | Total Sales | | - | | 30 | | 70 | | 110 | Here, the total sales amounts are calculated as follows: - Product 1: 10 (Channel A) + 20 (Channel B) = 30 - Product 2: 30 (Channel A) + 40 (Channel B) = 70 - Product 3: 50 (Channel A) + 60 (Channel B) = 110 ## Why Use MMULT? The MMULT function is particularly useful when you need to perform matrix operations without manually calculating each element. It allows you to efficiently handle complex data sets and perform advanced calculations that are essential in fields like finance, engineering, and data analysis. ## Key Takeaways: - **MMULT**: Multiplies two arrays (or matrices) and returns the product. - **Efficient Calculations**: Helps you perform complex matrix operations without manual calculations. - **Common Use Cases**: Ideal for financial modeling, statistical analysis, and any scenario where matrix operations are required. Understanding how to use the MMULT function can significantly enhance your data analysis capabilities in Excel, enabling you to perform sophisticated calculations with ease. Happy calculating! ## Example use case You have a table where Column A contains the quantities of products sold by different sales representatives, and Columns B through D contain the prices of those products in different regions. You can use the MMULT function to calculate the total sales revenue generated by each sales representative across all regions. This allows for a quick assessment of overall performance and helps in strategizing sales efforts without the need for complex manual calculations. **Beyond the MMULT function:** Better Analyst is a full [Excel AI](https://betteranalyst.com/excel-ai) that goes well past individual formulas. Upload any spreadsheet and ask questions in plain English — you'll get formulas, data analysis, and charts back in seconds. It's a free [AI Excel assistant](https://betteranalyst.com/excel-ai) that works with any .xlsx, .xls, or .csv file — no plugins, no Microsoft 365 required. Don't have a spreadsheet yet? Use our free [AI spreadsheet generator](https://betteranalyst.com/ai-excel-spreadsheet-generator) to turn a text prompt into a downloadable Excel file — a full [AI Excel sheet maker](https://betteranalyst.com/ai-excel-spreadsheet-generator) that builds headers, columns, and formulas from your description. ## Need more help with Excel formulas? Create a free account for formula help, explanations, and spreadsheet analysis. Usage limits depend on your plan. [Create Free Account](https://betteranalyst.com/signup)[Try Formula Generator](https://betteranalyst.com/excel-ai) ## Excel how-to guides - [How To Enable Macros In Excel](https://betteranalyst.com/excel/how-to-enable-macros-in-excel) - [How To Filter In Excel](https://betteranalyst.com/excel/how-to-filter-in-excel) - [How To Find Circular References In Excel](https://betteranalyst.com/excel/how-to-find-circular-references-in-excel) - [How To Find Duplicates In Excel](https://betteranalyst.com/excel/how-to-find-duplicates-in-excel) - [How To Freeze A Row In Excel](https://betteranalyst.com/excel/how-to-freeze-a-row-in-excel) - [How To Freeze Panes In Excel](https://betteranalyst.com/excel/how-to-freeze-panes-in-excel) - [How To Highlight Duplicates In Excel](https://betteranalyst.com/excel/how-to-highlight-duplicates-in-excel) - [How To Insert Checkbox In Excel](https://betteranalyst.com/excel/how-to-insert-checkbox-in-excel) ## Explore all Excel formulas Browse our complete library of Excel formula guides Compare your options ## Decide with evidence, not a sales pitch. 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