The calorie content of un-popped popcorn can vary slightly depending on the brand and type, but a general estimate is about 30 calories per tablespoon of un-popped popcorn. Therefore, if you have 4 tablespoons of un-popped popcorn, it would contain approximately:
- 4 tablespoons x 30 calories/tbsp = 120 calories
When popped, the calorie content remains roughly the same because popping does not add calories. So, you can expect about 120 calories