Turkey burgers made with lean ground meat, 1 egg and panko contain approximately 170-200 calories per 4-ounce (113-gram) patty. Here's a breakdown of the estimated calories from each ingredient: Lean ground turkey (90% lean): 120-150 calories per 4 ounces (113 grams). 1 egg: Approximately 70-80 calories. 1/4 cup panko breadcrumbs: Approximately 40 calories.