The healthy weight range is based on a BMI between 18.5 and 24.9.
Formula: Healthy weight = BMI × height(m)²
This tool is most useful for tracking trends rather than obsessing over a single data point. Run the calculation monthly with consistent measurement conditions to see whether your metric is moving in the right direction.
Many users apply adult health classifications to children and teenagers, which is incorrect. Paediatric norms for height, weight, BMI, and body composition are age-and-sex-specific. Use age-appropriate reference tools for anyone under 18.
A personal trainer uses the calculator with a new client to set a measurable starting point. Re-running the calculation at 4-week intervals provides an objective progress metric that supports motivation and programme adjustments.
Healthy = BMI 18.5-24.9. Calculate: min = 18.5 × h², max = 24.9 × h²
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