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The Institute of Medicine recommends a minimum of 130 grams of carbohydrates per day, which is the average minimal usage of glucose that the brain uses on a daily basis. You need 2,361 Calories/day to maintain your weight. You should take 252 (40%) - 472 (75%) grams of carbohydrate for your energy needs. (55% = 346 grams, 65% = 409 grams). You need 1,861 Calories/day to lose 0.5 kg per week. You should take 198 (40%) - 372 (75%) grams of carbohydrate for your energy needs. (55% = 273 grams, 65% = 323 grams). You need 1,361 Calories/day to lose 1 kg per week. You should take 145 (40%) - 272 (75%) grams of carbohydrate for your energy needs. (55% = 200 grams, 65% = 236 grams). You need 2,861 Calories/day to gain 0.5 kg per week. You should take 305 (40%) - 572 (75%) grams of carbohydrate for your energy needs.
Grams of Carbs. Determine the number of grams of carbs you need each day by calculating 45 to 65 percent of your total calorie intake, and dividing by 4. For example, if you eat a 2,000-calorie diet, shoot for 225 to 325 grams of carbs per day; and if you eat 2,500 calories a day, aim for 281 to 406 grams of carbs. Adults who drop their intake to 1,200 calories a day for weight loss need about 50 percent of their calories from carbs, or 150 grams per day.