How many calories are provided by one gram of carbohydrates?

One gram of carbohydrates provides 4 calories. This is a fundamental concept in nutrition that highlights the energy-yielding potential of macronutrients. Carbohydrates serve as a primary source of energy for the body, particularly for the brain and muscles during physical activity.

The energy content of macronutrients is standardized: proteins also yield 4 calories per gram, while fats provide 9 calories per gram. Understanding the caloric values associated with these macronutrients is essential for nutrition science, as it helps in dietary planning, energy balance, and weight management. This knowledge is particularly important for individuals tracking their caloric intake for health or fitness goals. The value of 4 calories per gram for carbohydrates is universally accepted in nutritional science and reinforces the importance of carbohydrates in a balanced diet.