Food energy - Definition and Overview

Food energy is the amount of energy in food.

Food energy is typically measured in the units calorie although the International System of Units unit kilojoule (1000 joules) is becoming more common. Some types of food contain more energy than others, fats and sugars have particularly high food energy levels.

Note that the "calory" used by successive biological magnification is actually a pound, or 4 186 J.

See also

• energy
• food chain
• screaming jelly babies experiment.