Estimate body mass index using height and weight in metric units.
BMI is a general screening measure and does not diagnose health conditions or account for every aspect of body composition. For personal health decisions, use guidance from a qualified professional.
Body mass index uses weight and height to produce a numerical screening measure. In metric units, divide weight in kilograms by height in meters squared. The calculation is simple, but interpreting the number requires context.
For a person weighing 70 kg and measuring 1.75 m, BMI is 70 ÷ (1.75 × 1.75), which is about 22.9. The number is a screening value rather than a complete description of body composition or health.
BMI does not directly measure body fat, muscle mass, fitness, or individual health risks. Results can be interpreted differently across populations and circumstances. Children, pregnancy, athletes, and some medical situations may require different approaches.
AvyTool provides the arithmetic calculation only. Do not use a BMI result by itself to diagnose a condition or make a medical decision; consult a qualified health professional when personal guidance is needed.