Estimate current body fat
Use a photo estimate, tape method, scale trend, or visual chart. The plan changes if this number is off.
Recomp planning tool
Body Recomposition Calculator
Estimate a practical calorie target, protein range, fat-loss amount, lean mass, target weight, and timeline for losing fat while training to keep or gain muscle.
Use it as a planning range: Body recomposition is slower than a normal cut because the goal is not only weight loss. The calculator gives a conservative starting point that should be adjusted from real weekly progress.
Calculate Your Recomposition Plan
Enter your current body size, estimated body fat, target body fat, activity level, and training experience. The result is a practical starting plan, not a medical prescription.
Your recomposition starting point
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Daily calories
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Daily protein
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Fat to lose
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Estimated timeline
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Estimated lean mass
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Current weight minus estimated fat mass.
Estimated target weight
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Weight implied by the same lean mass at your target body-fat percentage.
Training note
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A simple reminder based on training experience.
Calories
Start near maintenance or a small deficit instead of an aggressive crash diet.
Protein
Set a daily protein target based on body weight and training level.
Timeline
Estimate how many weeks your target may take at a sustainable rate.
Private
Inputs stay in your browser and are not uploaded.
How to Use the Body Recomposition Calculator
The calculator works best when you use realistic estimates rather than perfect-looking numbers.
Choose a realistic target
Dropping from 25% to 18% is more realistic than trying to reach stage-lean levels while gaining muscle.
Adjust from real progress
Run the plan for several weeks, then adjust calories if weight, waist, photos, or strength are not moving as expected.
What the Calculator Estimates
A useful recomp plan connects body fat, lean mass, calories, protein, and training into one readable target.
| Focus | Recommendation | Why it matters |
|---|---|---|
| Calories | Maintenance to a small deficit | Large deficits make muscle gain and training performance harder. |
| Protein | About 1.8-2.2 g/kg body weight | Higher protein supports satiety and muscle retention during fat loss. |
| Training | Progressive resistance training | Recomposition depends on a muscle-building signal, not only diet. |
| Progress tracking | Use scale trend, waist, photos, and lifts together | Body weight can move slowly when fat loss and muscle gain overlap. |
How to Read the Result
Do not treat the calculated target weight as a promise. It is an estimate based on your current lean mass staying roughly stable.
- If the target weight looks surprisingly low, your current body-fat estimate may be too high or the target may be too aggressive.
- If calories feel too low to train well, raise them slightly and watch the weekly trend.
- If weight stays flat but waist shrinks and lifts improve, the recomp may still be working.
- If nothing changes after 3-4 weeks, adjust calories, steps, protein consistency, or training progression.
Best use: Pair this page with the AI body fat estimator, Navy tape calculator, BMI calculator, and waist-to-height ratio calculator instead of relying on one number.
Example Recomposition Plans
These examples show why a recomposition target is usually a range, not one exact day-by-day command.
Beginner at 24% body fat
80 kg, 24% to 18%
A small deficit, high protein, and beginner strength training may support visible fat loss while strength improves.
Intermediate lifter
176 lb, 22% to 17%
The timeline is slower because training quality and recovery have to stay high.
Already lean adult
15% to 12%
This is harder to treat as recomposition; a dedicated cut or maintenance phase may be more realistic.
Limitations and Safety Notes
Body recomposition is health-adjacent and depends on more than calculator math.
Body-fat estimates are imperfect
Photo, tape, scale, and visual estimates can all be wrong. Use trends rather than one reading.
Medical needs come first
Pregnancy, eating-disorder history, diabetes, medications, and clinical conditions need professional guidance.
Recovery affects results
Sleep, stress, steps, training volume, and protein consistency can change the outcome.
Related Body Composition Tools
Use these tools to check the assumptions behind your recomposition plan.
Body Recomposition Calculator FAQ
Body recomposition means reducing fat mass while maintaining or gaining lean mass. It usually requires resistance training, enough protein, and calories close to maintenance or a small deficit.
Many beginners, returning lifters, and people with higher body fat can do both. Advanced lean lifters usually need more precise phases and slower expectations.
Most people start near maintenance or with a small deficit. The calculator estimates a starting point from body size, activity, and training level, then you should adjust based on real progress.
A common practical range is about 1.8-2.2 grams per kilogram of body weight per day for adults doing resistance training, but personal needs can vary.
It depends. Recomposition is useful when you want slow fat loss and strength progress together. A dedicated cut may be faster when fat loss is the only priority.