Macro Calculator for Body Recomposition
Body recomposition macros: gain muscle and lose fat simultaneously at maintenance calories.
What is body recomposition and what macros does it need?
Body recomposition means gaining muscle mass and losing fat simultaneously — something long considered impossible. Current evidence shows it is possible in specific contexts: beginners, people with excess fat, individuals returning to training, or those in moderate energy deficit [¹]. The key is very high protein intake (2.0–2.4 g/kg/day) that stimulates muscle synthesis even without a caloric surplus, while the deficit is partly covered by stored body fat [²]. Calories sit at maintenance (TDEE) or slightly below (−100 to −200 kcal).
How to use this calculator
Select 'Maintenance' goal and 'High' protein. To slightly accelerate fat loss, drop to −200 kcal below TDEE. Patience is crucial: recomposition is slower than a dedicated bulk or cut, but results are visually more satisfying since no fat is accumulated and no muscle is lost.
Ideal profiles for body recomposition
| Profile | Does recomposition work well? | Reason |
|---|---|---|
| Beginner (<1 year training) | ✅ Very well | High sensitivity to stimulus |
| With >20% body fat | ✅ Well | Fat as energy reserve |
| Return after long break | ✅ Well | Active muscle memory |
| Intermediate with <15% fat | ⚠️ Slow | Less room for improvement |
| Advanced near genetic limit | ❌ Difficult | Muscle synthesis saturated |
FAQ
1Why does recomposition work without a surplus?
Because muscle protein synthesis can be activated with sufficient protein and training stimulus even without a caloric surplus. The energy to build muscle can partly come from fat stores [¹].
2How long to see results?
Recomposition is slow. Expect visible changes in 3–6 months with consistent adherence. The scale may not move (or move little) but body composition improves [²].
3How do I know if I'm recomposing and not just stalling?
Track progress with photos, waist/hip measurements and body fat % (bioimpedance or callipers), not just weight. Stable weight with shrinking waist and increasing strength is the classic recomposition signal.
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