Here’s the nutritional breakdown for 1 orange (140 grams) :

  • Calories: 66
  • Water: 86% by weight
  • Protein: 1.3 grams
  • Carbs: 14.8 grams
  • Sugar: 12 grams
  • Fiber: 2.8 grams
  • Fat: 0.2 grams
  • Vitamin C: 92% of the Daily Value (DV)
  • Folate: 9% of the DV
  • Calcium: 5% of the DV
  • Potassium: 5% of the DV

Like most fruits, oranges mainly comprise carbs and water, contain very little protein and fat, and are relatively low in calories.