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Body Recomposition – Lose Fat, Gain Muscle

Quick answer

Plan a body recomposition: a small 200–300 kcal deficit with protein at 2.0–2.2 g/kg and heavy training to lose fat and build muscle at the same time.

Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.

How Recomposition Planning Works

Calories = TDEE − 200 to 300; protein = 2.0–2.2 g/kg; 3–4 strength sessions weekly

Body recomposition — losing fat while gaining muscle — works when three signals align: a small calorie deficit just large enough to mobilize fat (200–300 kcal below maintenance), protein high enough to build (2.0–2.2 g/kg daily), and progressive resistance training 3–4 times a week. Beginners, returning lifters and overweight trainees recomp best, gaining 0.5–1 kg muscle per month while losing fat; lean advanced lifters recomp slowly or better use alternating cut/bulk phases. Worked example: an 85 kg man with a 2,700 kcal TDEE eats 2,450 kcal with 170 g protein, keeping fats at 0.8 g/kg and filling the rest with carbs around training. Expect the scale to move little while the tape measure and photos show the real change — judge recomp by waist and lifts, not weight.

  1. 1

    Enter stats and training age

    Your TDEE and recomp potential depend on training history

  2. 2

    Set the small deficit

    200–300 kcal under maintenance keeps training quality

  3. 3

    Follow protein and lifting

    2.0–2.2 g/kg protein and 3–4 heavy sessions per week

Use Cases

Beginner transformations

First-year lifters gain 0.5–1 kg muscle monthly in a deficit

Comeback after a break

Muscle memory makes regained tissue fast while fat falls

Athletic off-season

Hold weight class while improving strength-to-weight

Tips

  • 1

    Track waist and progress photos weekly, scale monthly

  • 2

    Recomp slower than bulk/cut — give it 12–16 weeks

  • 3

    Sleep 7–9 hours; poor sleep blunts recomposition sharply

Common Mistakes

  • Cutting 700+ kcal and losing muscle with the fat

  • Setting protein at 1.2 g/kg and hoping training saves it

  • Judging success by scale weight in month one

  • Adding endless cardio instead of heavy progressive lifting

FAQs

Is body recomposition really possible?

Yes for beginners, returning lifters and higher-body-fat trainees: studies show 0.5–1 kg muscle gained per month while fat drops.

What calorie deficit suits recomposition?

Only 200–300 kcal below maintenance — about 10% — to fuel training while tapping fat stores.

How much protein for recomping?

2.0–2.2 g per kg daily; an 85 kg trainee needs 170–187 g spread over 4 meals.

How long before recomposition shows?

Waist changes appear in 4–6 weeks; visible muscle definition typically needs 12–16 weeks.

Who should bulk and cut instead?

Lean advanced lifters (men under 12%, women under 20% body fat) gain faster alternating dedicated phases.