BMI Calculator

Calculate your Body Mass Index from height and weight. See your BMI category and the healthy weight range for your height.

βš–οΈ BMI Calculator

Results

BMI24.2
CategoryNormal
Healthy Range53.5 – 72.0 kg

πŸ’‘ How BMI Is Calculated

BMI = weight (kg) / height (m)Β². A BMI of 18.5–24.9 is considered normal weight. Below 18.5 is underweight, 25–29.9 is overweight, and 30+ is obese.

BMI is a quick screening tool, not a diagnostic measure. It doesn't distinguish between muscle and fat β€” a muscular athlete may have a high BMI but low body fat. For a more complete picture, combine BMI with body fat percentage and waist-to-hip ratio.

A 70 kg person at 170 cm has a BMI of 24.2 (normal weight). Their healthy weight range is 53.5–72.0 kg.

BMI Calculator FAQ

πŸ”— Related Calculators

Ideal Weight CalculatorCalculate your ideal body weight using multiple scientific formulas β€” Devine, Robinson, Miller, and Hamwi. See your healthy weight range.Body Fat CalculatorEstimate your body fat percentage using the Navy method. Enter neck, waist, and hip measurements for an accurate estimate.Child & Teen BMI CalculatorCalculate BMI for children and teens aged 2-20 with age- and sex-specific CDC percentile categories.Calorie CalculatorCalculate how many calories you need per day to maintain, lose, or gain weight based on age, gender, height, weight, and activity level.

πŸ“– Recommended Guides

BMI & Health β€” Understanding Your Body Mass Index Numbers7 min readWhat your BMI really means, its limitations, and what other health metrics to track. Evidence-based guide to weight and health.

πŸ“˜ Key Term

BMIBody Mass Index (BMI) is a widely recognized medical and fitness proxy used to estimate a person's total body fat based on their height and weight. It is calculated by taking an individual's weight in kilograms and dividing it by the square of their height in meters (mΒ²). By providing a standardized numerical score, the BMI helps healthcare professionals and individuals quickly categorize weight profiles into standard bands: Underweight (below 18.5), Normal or Healthy Weight (18.5 to 24.9), Overweight (25 to 29.9), and Obese (30 and above). It is important to note that while the BMI is an excellent general screening tool for the broader population, it does not distinguish between muscle mass and fat mass, making it less accurate for athletes or bodybuilders. Furthermore, for South Asian populations, health authorities often recommend slightly lower cutoffs because of an increased genetic predisposition to visceral fat and cardiovascular risks at lower BMI thresholds.Read full definition β†’