Question: how many calories in a whole wheat tuna sandwich?
Answer: At a restaurant, a whole tuna sandwich on wheat may contain up to 600 calories, depending on the recipe and size. However, homemade versions can be far lighter. Using two slices of whole-wheat bread, 3 ounces of water-packed tuna and 1 tablespoon of light mayo, you'll create a sandwich of about 310 calories.