Weight Loss Calculator
Estimate how long it would take to reach a target weight at a steady daily calorie deficit. This uses the standard rule of 7,700 kcal per kilogram, which is a straight line, and real weight loss is not one.
Estimate how long it would take
Frequently Asked Questions
About 7,700, or 3,500 per pound. This is the Wishnofsky rule from 1958, and every calculator of this kind uses it.
A lighter body burns fewer calories doing the same things, so a fixed deficit shrinks as you lose weight. Metabolic adaptation reduces it further. The straight line here is optimistic about the later stages.
A deficit of 500 kcal a day, roughly half a kilogram a week, is the usual guidance. This calculator stops at 1,000 kcal because larger deficits need medical supervision.
Only if you include it in the deficit yourself. The deficit is the gap between what you eat and what you burn in total, however that gap is made.