How many calories are in a mayo sandwich?
                                
                                
                                •
                                
                                
                        
                                    
                                    5 min read                                
                            
                                One tablespoon of standard mayonnaise can contain around 90 to 100 calories, revealing just how quickly the calorie count can escalate in a simple mayo sandwich. This seemingly innocent lunch staple is often underestimated for its energy density, as the amount of bread and filling significantly changes the overall nutritional profile.