Creating Custom Formulas in Google Sheets using Apps Script

1. Open your Google Sheets document: Navigate to Google Sheets and open the spreadsheet where you want to create the custom formula.
2. Access the Apps Script editor: Click on the "Extensions" menu in the top navigation bar and select "Apps Script." This will open the Apps Script editor in a new tab.
3. Write a function definition: In the Apps Script editor, delete any existing code and start with a new function definition. For example, let's create a custom formula called "DOUBLE" that doubles a given number. In the editor, enter the following code:

function DOUBLE(number) {
  return number * 2;
}

4. Save the script: Save the script by clicking on the floppy disk icon in the toolbar or by going to the "File" menu and selecting "Save." Give your project a meaningful name if prompted.
5. Close the Apps Script editor: Once you have saved the script, close the Apps Script editor tab to return to your Google Sheets document.
6. Use the custom formula: Now, you can use your custom formula in any cell within your Google Sheets document. For example, if you want to double the value in cell A1, you can enter the formula =DOUBLE(A1) in another cell. The custom formula will execute and display the result.

By following these steps, you have successfully created and used a custom formula in Google Sheets using Apps Script. The custom formula can perform calculations, manipulate data, or provide specialized functionality tailored to your specific needs. You can create more complex formulas by writing additional functions in the Apps Script editor and incorporating them into your sheets.

Custom formulas created using Apps Script can greatly enhance the capabilities of Google Sheets, allowing you to automate repetitive tasks, perform advanced calculations, and customize your spreadsheet workflows. Experiment with different functions and explore the vast potential of Apps Script to unlock even more powerful features in Google Sheets.