Reverse Dieting Calculator

Build a week-by-week calorie increase schedule to move from a dieted-down intake back to maintenance while minimising fat regain.

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Reverse Diet Setup

Total weeks
8
Calories gained
+800
Scale shift
~0.7 kg
Week-by-week plan
WeekCaloriesProteinCarbsFat
11,700160g107g36g
21,800160g119g40g
31,900160g130g44g
42,000160g141g48g
52,100160g152g51g
62,200160g164g55g
72,300160g175g59g
🏁 82,400160g186g63g
What to expect: The ~0.7 kg scale increase is mostly glycogen and water as carbohydrates refill depleted stores — not fat. Hold each calorie level for a full week before increasing. If hunger, energy, and weight trends look good, proceed on schedule.

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Health & Nutrition

Reverse Dieting Calculator

Reverse dieting is the practice of gradually increasing calorie intake after a period of sustained restriction, with the goal of restoring metabolic rate and reducing fat regain during the transition back to maintenance. The structured weekly increases are designed to give the body time to upregulate energy expenditure before a large calorie surplus develops.

Why increase calories gradually?

After a prolonged calorie deficit, resting metabolic rate often falls below the level predicted by body composition alone — a phenomenon sometimes called adaptive thermogenesis or metabolic adaptation. Rapidly returning to pre-diet maintenance calories may produce a larger-than-expected calorie surplus before metabolic rate recovers, leading to faster fat regain than a gradual approach. Increments of 50–150 kcal per week give the body time to adjust.

Setting the weekly increase rate

Typical reverse diet protocols use 50–100 kcal/week increments for conservative approaches and 100–200 kcal/week for faster timelines. The appropriate rate depends on how long the deficit lasted, how large the deficit was, and individual tolerance for scale weight fluctuation. Slower protocols minimise fat gain but extend the timeline; faster protocols get calories up sooner at the cost of a slightly higher initial scale response.

Frequently asked questions

Will I gain fat during a reverse diet?

Some scale weight increase is normal during a reverse diet, but much of it is glycogen and water rather than fat. Controlled research is limited, but anecdotal evidence and theoretical modelling suggest that a slow, structured reverse diet produces less fat gain than abruptly returning to unrestricted eating after a prolonged deficit.

What happens when I reach maintenance?

Once you reach estimated maintenance, you can stay there for a period to allow full metabolic recovery before beginning another deficit, or transition to a muscle-building phase with a small surplus. Spending 4–8 weeks at or slightly above maintenance before cutting again is a common practice in physique sport periodisation.

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