[header] How to know when you are overeating [title] Calculate your recommended daily caloric intake. [step] Your recommended daily calories depend on your age, size, and activity level. They also depend on whether you're trying to lose weight, gain weight, or maintain your current weight. 
[substeps] Use an online calculator to determine how many calories you should consume each day or read this wikihow article, how to calculate your total daily calorie needs. You can also see a personal trainer or a nutritionist for an in-person consultation about how much you should be eating.