How to Use the NOT Function in Excel (Reverse Logical Values) The NOT() function is a simple yet powerful Excel tool that reverses a logical value — turning TRUE into FALSE and vice versa. 📘 Syntax: =NOT(logical) ✅ Example: =NOT(A2="Pass") This returns TRUE if A2 is not equal to "Pass", and FALSE if it is. 🎯 Use Cases: Validating opposite conditions Reversing IF logic Creating custom warnings or alerts 🔁 Combine with Other Functions: =IF(NOT(B2>50), "Fail", "Pass") will return "Fail" if the score is NOT greater than 50. 🧠 Why It Matters: Using NOT allows you to flip any condition, which gives more flexibility to logical tests in Excel. For more Excel insights, follow ScriptDataInsights!