• Trump says US in 'very deep' negotiations with Hamas and urges release of hostages
  • Israel announces creation of 'humanitarian zone' in Khan Younis
  • Egypt condemns Netanyahu's remarks over displacement of Palestinians
  • Israeli cycling team should be expelled from Vuelta, says Spanish Foreign Minister
  • At least 64,368 Palestinians killed and 162,367 wounded in Gaza since war began

What is a calorie?

A food calorie, or kilocalorie, is a measure of nutritional energy generated from what is consumed.

One calorie, is the amount of heat needed to raise the temperature of 1 kilogram of water by 1°C.

A kilocalorie represents a 1,000 true calories of energy.

Energy density figures are often quoted as calories per serving, with one gram of fat in food containing nine calories, and a gram of protein or carbohydrate providing about four.

Alcohol contains about seven calories a gram. 

Updated: September 06, 2025, 11:26 AM`