Yep. When you see "calorie" on US food labels, that's actually a big-C Calorie, or food calorie, which is equal to a kilocalorie from regular physics.
If it were regular physics calories, the energy content of food would be nowhere near enough to sustain us. A typical human body at rest will consume around 8 megajoules per day, or about 2 million calories. But that's only about 2 thousand big-C food Calories.
