# Google Sheets ISNUMBER Function: Syntax, Examples & Tips - URL: https://betteranalyst.com/google-sheets/isnumber-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 ISNUMBER function checks if a value is a number, returning TRUE if it is and FALSE if it isn't, useful for data validation. ``` ISNUMBER(value) ``` Generate FormulaExplain Formula One free generation or explanation per browser, shared across Excel and Google Sheets. Account usage limits apply afterward. Describe the ISNUMBER you need in plain EnglishGenerate Formula ## Parameters **`value`**:\ The value or expression that you want to test to determine if it is a number. This can be a cell reference, a number, or a formula that returns a value. ## What is the ISNUMBER Function? The *ISNUMBER* function in Google Sheets is a simple yet useful tool that checks whether a given value is a number. It returns TRUE if the value is a number and FALSE if it is not. This function is particularly helpful in data validation, error checking, and conditional formatting, allowing users to ensure that their data meets specific criteria. In simpler terms, ISNUMBER helps you verify if a cell contains a numeric value, which can be crucial when performing calculations or analyses that require numerical data. ## A Practical Example Imagine you are working with a dataset that includes various types of entries, and you want to identify which entries are numeric: ### Data Table: | Entry | | - | | 123 | | Hello | | 45.67 | | 89.00 | | World | | 100 | You want to create a new column that indicates whether each entry is a number. ## ISNUMBER Formula To achieve this, you would use the ISNUMBER function as follows: ``` =ISNUMBER(A2) ``` In this formula: - `A2` is the cell containing the value you want to check. ## Result of the Formula When you apply the ISNUMBER formula to the Data Table, the output would look like this: | Entry | Is Number | | - | - | | 123 | TRUE | | Hello | FALSE | | 45.67 | TRUE | | 89.00 | TRUE | | World | FALSE | | 100 | TRUE | In this case, the ISNUMBER function correctly identifies which entries are numeric and which are not. ## Why Use ISNUMBER? ISNUMBER is beneficial because it provides a straightforward way to validate data types in your spreadsheet. It helps prevent errors in calculations and ensures that your data analysis is based on accurate numeric values. Additionally, it can be used in combination with other functions to create more complex logical tests. ## Key Takeaways: - **ISNUMBER**: A function that checks if a value is numeric and returns TRUE or FALSE. - **Data Validation**: Useful for ensuring that data entries meet specific numeric criteria. - **Error Prevention**: Helps avoid calculation errors by confirming that the data is in the correct format. - **Common Use Cases**: Ideal for data cleaning, validation, and preparing datasets for analysis. ISNUMBER is an essential function for anyone working with data in Google Sheets, providing a simple way to enhance data integrity and reliability. Happy spreadsheeting! ## Example use case You have a list of sales data in Column A and want to identify which entries are valid numbers. Use the ISNUMBER formula to filter out non-numeric values, ensuring accurate analysis of sales performance and preventing errors in calculations. ## Need more help with Google Sheets formulas? Sign up for Better Analyst and get unlimited AI-powered formula generation, explanations, and advanced data analysis. [Create Free Account](https://betteranalyst.com/signup)[Try Formula Generator](https://betteranalyst.com/excel-ai) ## Google Sheets how-to guides - [How To Unprotect Google Sheets](https://betteranalyst.com/google-sheets/how-to-unprotect-google-sheets) - [How To Wrap Text In Google Sheets](https://betteranalyst.com/google-sheets/how-to-wrap-text-in-google-sheets) - [Google Sheets Conditional Formatting](https://betteranalyst.com/google-sheets/google-sheets-conditional-formatting) - [How To Add A Column In Google Sheets](https://betteranalyst.com/google-sheets/how-to-add-a-column-in-google-sheets) - [How To Alphabetize In Google Sheets](https://betteranalyst.com/google-sheets/how-to-alphabetize-in-google-sheets) - [How To Autofit In Google Sheets](https://betteranalyst.com/google-sheets/how-to-autofit-in-google-sheets) - [How To Calculate Percentage In Google Sheets](https://betteranalyst.com/google-sheets/how-to-calculate-percentage-in-google-sheets) - [How To Combine Two Columns In Google Sheets](https://betteranalyst.com/google-sheets/how-to-combine-two-columns-in-google-sheets) ## Explore all Google Sheets formulas Browse our complete library of Google Sheets formula guides Compare your options ## Decide with evidence, not a sales pitch. 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