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Target Weight for a Target BMI

Target weight = target BMI × height (m)². For example, a BMI of 25 at 1.75 m is 76.6 kg. Add current weight to see how many kilograms must be lost or gained.

  • Target BMI
  • Height (cm or m or in)
  • Current weight (optional) (kg or lb)
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Formula

Target weight (kg) = target BMI × height (m)²

Clinical pearls

  • BMI targets are population tools; individual goals should consider waist circumference, comorbidities and body composition.
  • Matches the MedCalc-Bench target-weight definition.

Examples

FAQ

How do I calculate a goal weight from BMI?

Multiply the target BMI by height in metres squared, e.g. 25 × 1.75² = 76.6 kg.

What target BMI should I use?

The upper limit of normal is 24.9; for many patients with obesity a 5–10% weight loss is a more realistic first goal.

Evidence

  1. MedCalc-Bench reference implementation (target_weight.py).
  2. WHO. Obesity: preventing and managing the global epidemic. Technical Report Series 894 (2000).

General & Anthropometrics · Reviewed 2026-10-14 · Methodology