According to the United States Department of Agriculture, the average adult age 19 and above should consume between 1,600 and 2,400 calories per day. This number varies based on both gender and age group.
In general, males can consume more calories per day than females. Males in the 19 to 30 age range can consume 2,400 calories per day, while females in the same age group should consume 2,000 calories daily. The United States Department of Agriculture also provides guidelines for the consumption of empty calories, or calories from fats and added sugars. The guidelines recommend that adult males limit their consumption of empty calories to between 260 and 330 calories. Adult females should limit their daily intake of empty calories to between 120 and 260 calories.