A pound of fat stores 3500 calories (kcal). To lose a pound of fat in a week, a person must eat approximately 500 fewer calories (kcal) per day than he/she expends in metabolism and exercise.
The range of daily calorie burning each day is from 1600 for a sedentary woman or for an older person to 2800 for active men, very active women and teenage boys.
Calories per Day Calculator: Find how many calories you burn each day based on your height, weight, age, and activity level.
Walking expends approximately 100 calories per mile for a 150 pound person.
Walking Calorie Calculator: find out how many calories you can burn per mile based on your weight and speed.
CalorieCount: Use this free online site and mobile app to find out how many calories are in food items, and to track your diet and exercise calories.