Healthy weight from height
Enter height in any unit; the others stay in sync. The range uses WHO “normal” BMI bounds of 18.5 to 24.9 — a population guide, not a personal target.
How this healthy weight range works
WHO “normal” BMI translated into weight
This page takes your height and reports the body-weight band that corresponds to the World Health Organization adult BMI category often labelled normal: BMI from 18.5 to 24.9. Rearranged, weight = BMI × height² (height in metres), so the same BMI limits become a kilogram and pound range for your stature.
It is a population screening guide, not a personal target. Muscle mass, age, pregnancy, and ethnicity can place a healthy person outside that band — or an unhealthy person inside it.
Formulas
- Minimum weight (kg) = 18.5 × height_m²
- Maximum weight (kg) = 24.9 × height_m²
- Pounds and stones are converted from those kilogram bounds
Worked example
At 1.75 m (175 cm): height² = 3.0625. Minimum ≈ 18.5 × 3.0625 ≈ 56.7 kg; maximum ≈ 24.9 × 3.0625 ≈ 76.3 kg. The page also shows those bounds in pounds and as stones-and-pounds style readouts.
Using the range wisely
- Pair with waist-based tools such as BMI & BRI and Waist-to-Height.
- Athletes with high muscle mass may sit above the band while remaining metabolically healthy.
- Children and teens need age-specific charts — do not use adult BMI cut-offs for them.
Common mistakes
- Treating the midpoint as a mandatory goal weight.
- Entering height in the wrong unit (1.75 m vs 175 cm).
- Ignoring clinical advice when BMI is only one of several risk markers.
FAQs
- Why not classic Devine or Robinson formulas?
- Those older actuarial equations give a single estimate; this tool stays transparent by using the WHO BMI window people already see on BMI charts.
- Where can I read more?
- See Understanding BMI and BRI.
Last updated: July 2026