weight loss

  How Many Calories Should You Eat per Day to Lose Weight? Below is a simple but highly accurate scientific calorie calculator, along with five evidence-based tips on how to sustainably reduce your calorie intake. Enter your details in the calculator below to figure out how many calories you should be eating per day to either maintain or lose weight. The calculator is based on the Mifflin-St Jeor equation, a formula that numerous studies have shown to be an accurate way of estimating calorie needs ( 1 Trusted Source ,  2 Trusted Source ,  3 Trusted Source ). How many calories should you eat on average? The answer to this question depends on numerous factors, including your age, height, current weight, activity level, and metabolic health, among several others. When trying to  lose weight , a general rule of thumb is to reduce your calorie intake to 500 fewer calories than your body needs to maintain your current weight. This will help you lose about 1 pound (0.45 kg) of body weight per