Weight Loss Calculator

Weight change follows the gap between the calories you eat and the calories you use, at roughly 3500 calories per pound of body fat. The timeline option takes a current weight, a goal weight and a daily deficit, and returns the weeks and days involved. The calorie option estimates resting and maintenance calories from age, sex, height, weight and activity, then subtracts the deficit for the loss rate you choose. Real results vary with water weight and metabolism, so both are estimates rather than medical advice.