The 6-inch Veggie Patty Sandwich contains 390 calories, 22 g protein, 54 g carbohydrates and 9.6 g fat. The 6-inch Roast Beef Sub Sandwich contains 310 cal, 790 mg sodium, 5 g fiber, 25 g protein, 5 g total fat, 2 g saturated fat. Is Subway Healthy to Eat? Yes, Subway is ...