macronutrients energy values

• energy can be expressed in kilojoules, or more commonly kilocalories
• 1 gram of each major macronutrient gives us the approximate energy values:

  • 1g fat = 9 kcal
  • 1g protein = 4 kcal
  • 1g carbohydrate = 4 kcal
• if you know how many grams of each macronutrient are in a food, you can calculate its energy value
• to calculate the total energy value for a boiled egg with toast soldiers, multiply the energy value for 1g of the macronutrient by how many grams there are in total