This popcorn is 424 kcal per 100 g. Popcorn looks volumetric, but seasoning oils and butter toppings flip it from a low-density snack into a fat source. Track the seasoned weight, not the plain kernel count.
How should I track Popcorn, microwave, low fat?
Popcorn, microwave, low fat is high in fiber. When it comes to Popcorn, microwave, low fat, weighing beats counting every time. Snack pieces vary in size, and a handful from a bag can easily be 50–100% more than the label serving. Research (Almiron-Roig et al., Appetite 2013) shows that people consistently underestimate portions of calorie-dense snacks. Another common trap: multi-serving packages. The label might show 150 calories "per serving," but if the bag contains three servings, you are really looking at 450 calories. Always check whether values are per piece, per serving, or per package.