A medium-sized onion has 44 calories, 1.2g protein, 10.3g carbs, and 0.1g fat. Onions are a solid source of vitamins C and B6, potassium, and folate.| Verywell Fit
Cheeseburger calories can vary depending on the cheese that you use. Get cheeseburger nutrition facts and find out how to make a healthier burger.| Verywell Fit