Burger King Big Fish: nutrition and allergens

Nutrition facts

Percentages are the share of the FDA Daily Value for adults and children 4 and over, worked out from Burger King’s published amounts (how % Daily Value works). A dash means Burger King does not publish that value for this item. Not published for this item: added sugars.

Using the FDA’s rule of thumb that 5% of the Daily Value or less per serving is low and 20% or more is high, one serving is high in sodium (55%), fat (38%), protein (38%), saturated fat (25%) and carbohydrate (21%). Add it up with other items in the Burger King nutrition calculator.

Allergens

According to Burger King, the Big Fish contains wheat, egg, soy, fish and sesame.

Burger King's allergen chart marks this item as cooked in a shared fryer and toasted in a shared toaster.

Allergens from the Burger King allergen chart (June 2025) entry "Big Fish Sandwich".

Burger King says its allergen information is based on suppliers' ingredient lists and that shared cooking and preparation areas and utensils mean any item can come into contact with other allergens. Fish, pork sausage, chicken items, hash browns, mozzarella fries, French toast sticks and onion rings share fryers, and burger buns, sandwich buns and croissants share a toaster; the frying oil is a corn, canola, soy and/or cottonseed blend. The Impossible patty is cooked on the same grill as beef, and Burger King makes no vegan or vegetarian claim for it. Its allergen chart reflects supplier ingredient lists as of June 2025 and may leave out test and limited-time items, and guests with allergies are told to check bk.com before ordering.

Filter the whole Burger King menu by allergen

Other items in Chicken & Fish at Burger King

By calories, the Big Fish ranks 16 of 23 in Burger King’s Chicken & Fish section, from lowest to highest. The table shows the 9 items nearest to it; each item is compared at its first listed size.

Nutrition for all 23 items in Chicken & Fish at Burger King

Browse the Burger King menu by goal: high-protein items · low-calorie items

Fish sandwiches at other chains

Burger King is one of 6 chains on this site that sell fish sandwiches. Of the 5 at other chains, 4 have fewer calories and 1 has the same or more than the Big Fish, comparing each at its first listed size; portions differ, so check the serving on each item’s page.

Compare all fish sandwiches side by side (6 items at 6 chains)