Lettuce, butterhead (includes boston and bibb types), raw: cup, shredded or chopped to Grams
Quick answer
One cup, shredded or chopped of lettuce, butterhead (includes boston and bibb types), raw weighs 55 grams.
1 cup, shredded or chopped55 g
Reference serving (nutrition facts)100 g
Source: USDA FoodData Central - SR Legacy (2018-04) (USDA household portion weight)