Question

What do calories measure?__________________________________

Answer 1

A calorie is a unit that is used to measure energy. The Calorie you see on a food package is actually a kilocalorie, or 1,000 calories. A Calorie (kcal) is the amount of energy needed to raise the temperature of 1 kilogram of water 1 degree Celsius.

Source:
https://www.scientificamerican.com/article/how-do-food-manufacturers/

Answer 2

A calorie is a unit that is used to measure energy