Per 1 onion - Calories: 64 kcals
Per 1/2 medium - Calories: 35 kcals
Per 2 tsp - Calories: 4 kcals
Per 1 cup diced - Calories: 46 kcals
Per 1 portion for 1 slice - Calories: 40 kcals
Per 1/2 oz - Calories: 5 kcals
Per 1 serving - Calories: 10 kcals