Ideal Weight Range by Height
Chart the healthy BMI weight range (18.5–24.9) across a span of heights in centimetres. Quickly see where you fall relative to the range.
How to use this tool
- Enter minimum height and maximum height in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your low end at 170 cm and the full breakdown beneath it.
The BMI healthy weight range (18.5–24.9 kg/m²) provides a rough population-level reference. This chart shows the corresponding weight range across a span of heights.
BMI does not account for muscle mass, bone density or fat distribution. Not a diagnostic tool.
⚠ This tool is for general information and education only and is not medical advice. Consult a qualified healthcare professional before making health decisions.
Formula
Healthy weight low (kg) = 18.5 × height (m)2
Healthy weight high (kg) = 24.9 × height (m)2
Both values are rounded to one decimal place.
How it works
This tool applies the standard BMI formula in reverse: given a height, it calculates the body weights that correspond to the lower and upper boundaries of the healthy BMI range (18.5–24.9 kg/m²) as defined by the World Health Organization. The chart spans every centimetre in the requested height range, letting you read off the healthy weight corridor at a glance. BMI is a population-level screening index and does not account for muscle mass, bone density, age, or ethnic differences in body composition.
Worked example
- Target height = 170 cm = 1.70 m.
- Low end: 18.5 × 1.70² = 18.5 × 2.89 = 53.465 → rounded to 53.5 kg.
- High end: 24.9 × 1.70² = 24.9 × 2.89 = 71.961 → rounded to 72.0 kg.
At 170 cm the healthy weight range is 53.5 kg to 72.0 kg.
Common mistakes to avoid
- Reading the BMI-based range as a clinical target without accounting for muscle mass — athletes often fall into the overweight BMI band despite low body fat.
- Entering height in feet and inches without converting to centimetres, which shifts the weight range chart by a large offset.
- Treating the upper bound (BMI 24.9) as the ideal goal rather than a ceiling — individuals near the top of the range with low muscle mass may still have unfavorable body composition.
Key terms
- BMI (Body Mass Index)
- A ratio of weight to height squared (kg/m²) used as a population-level screening indicator for underweight, healthy weight, overweight, and obesity categories.
- Healthy BMI range
- The World Health Organization defines 18.5–24.9 kg/m² as the healthy range for adults of most ethnic backgrounds.
- BMI inversion
- Rearranging the BMI formula (weight = BMI × height²) to find the weight that corresponds to a target BMI at a given height.
- Height in metres
- The BMI formula requires height in metres; centimetre values must be divided by 100 before squaring.
Frequently asked questions
- What BMI values are used?
- This tool uses the standard WHO healthy range: BMI 18.5 (low) to 24.9 (high).
- Why does the range increase with height?
- Weight scales with height squared (kg/m²), so taller individuals have a wider absolute weight range within the same BMI band.