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Weight control

The Weight Control section turns a body-composition model into a calculated target and suggested changes. The numbers are related, but they do not come from a conversation about your goal, health or training.

Where to find it: The Weight Control section below the Muscle-Fat Analysis.

Illustration balancing muscle, fat and a calculated target

Relationship guide

Understand the calculation before the numbers

First read what the device calls target weight. Then separate the suggested change into fat and muscle and compare it with your own goal and trend.

  1. 011. Target weight is an algorithm outputTarget weight is neither a goal you selected nor a value prescribed by a professional. It is a reference calculated from the device model of balanced body composition.
  2. 022. Split the overall change into fat and muscleThe same change in body weight can mean a different result depending on whether fat or muscle changes.
  3. 033. Where this section stopsThe algorithm does not know medical limitations, dietary history, a sport season or personal preferences. It cannot determine a safe pace or a concrete plan.

01

1. Target weight is an algorithm output

Target weight is neither a goal you selected nor a value prescribed by a professional. It is a reference calculated from the device model of balanced body composition.

The device compares current body composition with its recommended model and turns the difference into target weight. Overall weight control is derived from that target.

Target weight should therefore not automatically be treated as ideal weight from BMI or as a personal target for sport, treatment or everyday life. That simplification can be particularly misleading in someone with above-average muscle mass.

  • The input is the current model of body composition.
  • The output is a device reference, not an individual plan.
  • A difference of several kilograms says neither how quickly nor whether weight should change.
Measured composition
Reference model
Target weight
Fat control
Muscle control
Teaching diagram — these are not your measured data.

Explained values

Target weightTWTarget Weight is a figure the device calculates from its model of balanced body composition — the output of a calculation, not a personal goal and not medical advice.WeightWTWeight is the only quantity InBody actually weighs; every other component of body composition is derived from it and from impedance.BMIBMIBMI is weight divided by height squared; it describes weight relative to build but cannot tell muscle from fat.Percent body fatPBFPercent Body Fat tells you what share of your total weight is made up of estimated fat mass.
Useful comparisons: Target weight vs. "ideal" weight from BMI →Related guides: How to read InBody results and what actually matters →Related guides: Body Recomposition: Why the Scale Won't Move Even Though Your Body Is Changing →

02

2. Split the overall change into fat and muscle

The same change in body weight can mean a different result depending on whether fat or muscle changes.

Fat control and muscle control explain what the overall suggested weight change contains. The sign before a number gives the direction of the model suggestion, not a prediction of what will happen.

For real progress, compare the suggestion with the trend in fat mass, skeletal muscle mass and weight. Long-term direction and preserving functional muscle are usually more useful than hitting one calculated target exactly.

  • Weight control is the summary; fat and muscle control show its components.
  • A suggested change of zero does not mean that body composition cannot improve.
  • The trend in measured results matters more than chasing one calculated target.

Explained values

Weight ControlThese three figures in kilograms show how much the device model would have weight, fat mass and fat free mass change to reach its calculated target weight.WeightWTWeight is the only quantity InBody actually weighs; every other component of body composition is derived from it and from impedance.Fat massBFMBody Fat Mass is the amount of fat in kilograms — an absolute figure, unlike percent body fat, which is only a share of weight.Muscle massSMMSkeletal Muscle Mass is an estimate of the amount of voluntarily controlled muscle in kilograms — the muscle between bones and joints that produces movement.
Related guides: InBody during weight loss: how to tell whether you are losing mostly fat, not muscle →Related guides: Body Recomposition: Why the Scale Won't Move Even Though Your Body Is Changing →

03

3. Where this section stops

The algorithm does not know medical limitations, dietary history, a sport season or personal preferences. It cannot determine a safe pace or a concrete plan.

Use the result as a question for the next decision: does the calculated direction match what you want, and does the trend support it? Do not treat it as an automatic instruction to lose or gain weight.

With a medical limitation, marked weight change, an eating disorder, pregnancy or treatment, planning belongs with a qualified healthcare professional. InBody provides context, not a treatment decision.

Explained values

Target weightTWTarget Weight is a figure the device calculates from its model of balanced body composition — the output of a calculation, not a personal goal and not medical advice.Weight ControlThese three figures in kilograms show how much the device model would have weight, fat mass and fat free mass change to reach its calculated target weight.InBody ScoreInBody Score is a manufacturer summary figure for body composition relative to a reference weight — it is not a grade for your health.
Related guides: How to read InBody results and what actually matters →

Evidence used

The guide follows InBody terminology and interpretation documentation and deliberately separates the device model from individual medical or nutrition advice.

Content reviewed · 2026-07-26

Explanations make the most sense alongside your own trend.

The public guide is open to everyone. The client portal adds your own value, history and the context of a specific measurement.

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