How Many Calories to Add in a Reverse Diet

A reverse diet works by raising your daily calories a small, fixed amount each week rather than jumping straight to maintenance. The reason is physiological: after a stretch of dieting your body has quietly lowered its energy use, and appetite hormones have shifted — changes that can persist well after the diet ends (Sumithran et al., 2011). Feeding that suppressed system a slow, predictable rise lets it recover in step, so most of the extra energy goes to refilling muscle glycogen and, over time, supporting training rather than adding fat. The weekly amount is the single dial that controls the whole plan: pick it, and everything else — the week count, the schedule, the end intake — follows from your gap to maintenance.

There are three standard rates, and they differ only in the size of each weekly step. Conservative adds 50 calories a week — the gentlest climb, best after a long or hard diet, where minimising fat regain matters more than speed. Moderate adds 100 a week, the balanced default most people reach for, quick enough to feel like progress and slow enough to stay smooth. Aggressive adds 150 a week — the fastest route home, sensible after a short cut or for an experienced dieter who wants to be eating freely again soon. None of the three is inherently better; they are points on a slider between patience and speed, and the right one depends on how long and how hard you dieted and how quickly your body responds when you start adding food.

The maths is a single division: weeks equal your gap to maintenance divided by the weekly add-back. Say your current intake is 900 calories below the level you burn. At the conservative 50 a week that gap takes about eighteen weeks to close; at the moderate 100 a week it is nine weeks; at the aggressive 150 a week it is six. Same destination, three very different journeys — and the only thing that changed was the size of the weekly step. Your own gap will be larger or smaller, so plug your details into the tool above and it does the division for you, showing the week count at whichever pace you select. If you are not sure what your current intake even is, work it out first with the Calorie Deficit Calculator, and confirm the maintenance number you are climbing toward with the TDEE Calculator. For the full schedule with a rebound-risk read, the Reverse Dieting Calculator is the parent tool this page is built from.

Two things argue for a smaller weekly step. The first is a long diet: the more weeks you spent in a deficit, the more your body adapted downward, and the more gently it wants to be brought back up. The second is a big step relative to where you are — a large jump on top of a very low intake is the pattern most likely to see the scale run ahead of you. When both are true, conservative is the safer read, and the tool above flags exactly this as higher rebound risk and nudges you toward the +50 pace. It is guidance from arithmetic, not a diagnosis; a long or difficult diet is also a good reason to run the plan past a registered dietitian rather than a calculator alone.