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Burger King is project a one - day truce with its fast - food for thought rival McDonald ’s to create the " McWhopper , " a compounding of the Big Mac and the Whopper , the most popular burgers at the various chains . But just how many calories would this jumbo accumulation of beef and toppings have ?

Neither restaurant has released information about the accurate nutritional time value of the divinatory mega - burger , which Burger King want to sell in laurels of World Peace Day in September . However , it ’s possible to come up with a ballpark estimate using information from the fast - food for thought chains ' website .

An image of the "McWhopper," a proposed burger that would combine Burger King�s Whopper with McDonald�s Big Mac.

An image of the “McWhopper,” a proposed burger that would combine Burger King’s Whopper with McDonald’s Big Mac.

fit in to theBurger King proposal , the McWhopper would be 6 parts Big Mac and 6 contribution walloper . That is , the sandwich ’s top half would let in the Big Mac ’s top bun , beef patty , cheese , lettuce , special sauce and center bun , while the bottom one-half would consist of the Whopper ’s Lycopersicon esculentum , Allium cepa , ketchup , pickles , squawk patty and bottom roll .

To start up our McWhopper calculation , let ’s first look at how many calories are in each Warren Burger separately : The Big Mac has 540 calories , and the Whopper has 650 calories .

For a simple estimate of the McWhopper kilocalorie , we would divide the calories in the Big Mac and Whopper each by two , and add them together , giving us 595 gram calorie . However , this underestimates the calories in the McWhopper , because the mega - Warren Burger bear two of the three buns found in a normal Big Mac , so it really has more than one-half of that burger ’s common calories . [ 9 Snack Foods : Healthy or Not ? ]

a close-up of a large cheeseburger

To get a more exact estimation , we used the nutrition calculators on theBurger KingandMcDonald ’s internet site , which provide one to add or subtract element to each burger . By doing this , we figured out that each bun on the Big Mac contains about 73 Calorie , and so two bum hold back 146 calories . The two patties on a Big Mac contain 170 Calorie , and so one patty would bear 85 Calorie . The cheese slicing has 50 small calorie , and the lettuce has 10 calories . The ball of special sauce on a Big Mac contains 90 calories , and if we take over that only about one-half of that would be used on the McWhopper , that means 45 calories . Add all that together , and we get 336 small calorie for the Big Mac part of the McWhopper .

For the Whopper , we find that each bun check 110 calories , the patty curb 250 calories , the ketchup has 20 calories , and the tomato , onion and pickles together have 10 calories . lend that together , and we get 390 calories for the Whopper part of the McWhopper .

unite the two parts , and we get 726 Calorie for the two Warren E. Burger together , or about one - third of a person ’s totalrecommended day-by-day calories .

a photo of burgers and fries next to vegetables

Using a similar method acting , we can also visualise out the amount of adipose tissue in the McWhopper : The Big Mac part contains 16.5 g of fat , and the Whopper part hold 19.5 grams , for a total of 36 grams of fat , or about 54 percentage of what ’s take the maximal amount a person should eat in a twenty-four hour period .

It stay unclear if the McWhopper will come to realisation . McDonald ’s CEO Steve Easterbrook responded to Burger King ’s marriage offer by read he would be " in touch " with the quick - food for thought challenger . " We love the intent but cerebrate our two brands could do something bigger to make a difference , " Easterbrook said on Facebook .

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