# Excel SQRT Function: Syntax, Examples & Tips - URL: https://betteranalyst.com/excel/sqrt-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 SQRT function calculates the square root of a specified number, providing a quick method for mathematical analysis in Excel. ```excel =SQRT(number) ``` Generate FormulaExplain Formula One free generation or explanation per browser, shared across Excel and Google Sheets. Account usage limits apply afterward. Describe the SQRT you need in plain EnglishGenerate Formula Need more than a single SQRT 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 **`number`**:\ The positive number for which you want to calculate the square root. If the number is negative, the function will return a `#NUM!` error. ## What is a SQRT Formula in Excel? The *SQRT* function in Excel is a straightforward tool that allows you to calculate the square root of a given number. It takes a single argument, which is the number for which you want to find the square root, and returns the non-negative square root of that number. In simpler terms, the SQRT function helps you quickly determine the square root of a value, making it useful in various mathematical calculations. ## A Practical Example Imagine you are working on a project that involves calculating the standard deviation of a set of data points, and you need to find the square root of the variance. You have the following data in an Excel spreadsheet: ### Data Points Table: | Data Point | | - | | 4 | | 9 | | 16 | | 25 | | 36 | You want to find the square root of the variance of these data points. ## SQRT Formula To calculate the square root of a specific value, you would use the SQRT formula as follows: ```excel =SQRT(A2) ``` ### Breakdown of the Formula: - **A2**: This is the cell reference containing the number for which you want to find the square root. ## Result of the Formula When you apply the formula to the first data point (4), it calculates the square root. The output would be: | Square Root of 4 | | - | | 2 | Here, the square root of 4 is calculated as 2. ## Why Use SQRT? The SQRT function is particularly useful when you need to perform mathematical calculations that involve square roots, such as in statistics, geometry, and various engineering applications. It allows you to quickly derive the square root without manual calculations. ## Key Takeaways: - **SQRT**: Calculates the square root of a specified number. - **Efficient Calculations**: Helps you quickly determine square roots without complex formulas. - **Common Use Cases**: Ideal for statistical analysis, geometry problems, and any scenario where square roots are needed. Understanding how to use the SQRT function can significantly enhance your mathematical capabilities in Excel, enabling you to perform calculations with ease. Happy calculating! ## Example use case You have a table where Column A contains the lengths of the sides of various squares, and you want to calculate the area of each square. You can use the SQRT function to find the side length of a square given its area. 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[Create Free Account](https://betteranalyst.com/signup)[Try Formula Generator](https://betteranalyst.com/excel-ai) ## Excel how-to guides - [How To Sort In Excel](https://betteranalyst.com/excel/how-to-sort-in-excel) - [How To Split Cells In Excel](https://betteranalyst.com/excel/how-to-split-cells-in-excel) - [How To Strikethrough In Excel](https://betteranalyst.com/excel/how-to-strikethrough-in-excel) - [How To Subtract In Excel](https://betteranalyst.com/excel/how-to-subtract-in-excel) - [How To Transpose Data In Excel](https://betteranalyst.com/excel/how-to-transpose-data-in-excel) - [How To Unhide Columns In Excel](https://betteranalyst.com/excel/how-to-unhide-all-columns-in-excel) - [How To Unhide Rows In Excel](https://betteranalyst.com/excel/how-to-unhide-all-rows-in-excel) - [How To Unprotect Excel](https://betteranalyst.com/excel/how-to-unprotect-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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