Burger King has launched new low-calorie french fries.

The world’s No. 2 hamburger chain says its new "Satisfries" have 30 percent less fat and 20 percent fewer calories than its current fries.  The  new crinkle-cut fries are 270 calories because of a new batter that doesn’t absorb as much oil. By comparison, a small order of regular fries has 350 calories.

Burger King executives say people won’t be able to tell that the new fries are lower in calories. It says they use exactly the same ingredients as its regular fries - potatoes, oil and batter.

Burger King also says "Satisfries" have 40 percent less fat than market leader McDonald's and 30 percent fewer calories.

The fries will cost 20 cents to 30 cents more per serving, except in kids meals, where there will be no price difference.