Absolutely! Conditional formatting is a great way to quickly identify duplicate values in your Excel spreadsheet. Here's how:

1. Select the data range: Choose the cells you want to check for duplicates. This can be a single column, multiple columns, or an entire table.

2. Go to Conditional Formatting: Navigate to the "Home" tab on the Excel ribbon. In the "Styles" group, click on "Conditional Formatting."

3. Highlight Duplicate Values: A dropdown menu will appear. Move your cursor to "Highlight Cells Rules" and then select "Duplicate Values..."

4. Formatting Options (Optional): A new window titled "Format Cells with Duplicate Values" will pop up. By default, Excel offers a light red fill with dark red text to highlight duplicates. You can customize this formatting by clicking on the "Format..." button and choosing your preferred options (e.g., font color, fill color, etc.).

5. Choose option for duplicates (Optional): Excel offers two options for highlighting duplicates:
- Formats cells with duplicates: This will highlight any cell that has the same value as another cell elsewhere in the selected range.
- Formats values that appear more than once: This will only highlight cells that have duplicate values appearing more than once (excluding the first occurrence).

6. Click OK: Once you've chosen your formatting and duplicate highlighting preference, click "OK" to close the window.

Now, any cells containing duplicate values within your selected range will be visually highlighted according to your chosen formatting. This makes it easy to scan your data and identify potential errors or inconsistencies.