How many calories is a 4x4 protein style In-N-Out?
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                According to nutritional estimates, a 4x4 protein style burger from In-N-Out contains approximately 900 calories, a significant reduction from its bun-based counterpart. This popular secret menu option caters to those seeking a high-protein, lower-carb fast-food meal by replacing the traditional bun with crisp lettuce.