Are you curious about how many calories are in a peanut butter and jelly sandwich? Learn about the science behind PB&J calories, nutritional benefits and drawbacks, healthy alternatives, and practical advice for counting calories and making informed decisions. Discover how to make a lower-calorie sandwich, which ingredients are high in protein and healthy fats, and how to compare calorie counts for different types of sandwiches. Make informed decisions about your PB&J sandwich calorie intake today!