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The RDA of 130 grams of carbohydrate per day is based on the amount of glucose needed by the brain in a day. That amount of carbohydrate, however, is less than the amount that would be the lower limit of the Acceptable Macronutrient Distribution Range (AMDR).

Your body breaks down carbohydrates into glucose. Glucose, or blood sugar, is the main source of energy for your body's cells, tissues, and organs. Glucose can be used immediately or stored in the liver and muscles for later use.

Key Takeaways. The Recommended Dietary Allowance (RDA) of carbohydrates for children and adults is 130 grams per day. This is the average minimum amount the brain requires to function properly. The Acceptable Macronutrient Distribution Range (AMDR) for total carbohydrates is 45-65%.

Total Carbohydrate Requirements Beginning at the age of 1 year, and continuing throughout their teens, children need to consume 130 grams of total carbohydrates daily. The majority of their carbs should come from whole grains, fruits, vegetables and beans.

The reference values, collectively called the Dietary Reference Intakes (DRIs), include the Recommended Dietary Allowance (RDA), Adequate Intake (AI), Tolerable Upper Intake Level (UL), and Estimated Average Requirement (EAR).

Dietary reference intakes (DRIs) are a set of scientifically developed reference values for nutrients. DRI values provide the scientific basis for nutrition professionals, governments, and non-governmental organizations to carry out activities such as: Developing nutrition labels.

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.

For men of reference body size, the average allowance is 2,900 kcal/day; for women, it is 2,200 kcal.