In-N-Out Milkshake Calories & Nutrition Facts

If you’re wondering how many calories are in an In-N-Out milkshake, here’s the quick answer: an In-N-Out shake has 570 to 590 calories, depending on the flavor. The vanilla shake is the lowest-calorie option at about 570 calories, while chocolate and strawberry are about 590 calories each. In-N-Out serves its shakes in one standard size…