BMI Calculator
Body mass index and healthy weight range for adults.
Body mass index and healthy weight range for adults.
Body mass index and healthy weight range for adults. Fill in the fields above and the result updates instantly, together with the formula behind it.
BMI = weight in kg ÷ (height in m)²
70 kg at 175 cm gives a BMI of 22.9, within the 18.5–24.9 range commonly labelled healthy.
For adults 18+. BMI is a population screening tool, not a diagnosis: it ignores muscle, age and body build. Talk to a health professional about your health.
BMI = weight in kg ÷ (height in m)². Example: 70 kg at 175 cm gives a BMI of 22.9, within the 18.5–24.9 range commonly labelled healthy.
You enter: Units; Weight (kg or lb); Height (cm or in). An example value is shown in each empty field, and the result appears as soon as the numbers are valid.
For adults, below 18.5 is underweight, 18.5–24.9 is the healthy range, 25–29.9 is overweight and 30 or more is in the obesity range. Children and teenagers use age-specific charts.
No. BMI ignores muscle mass, body composition, age and ethnicity, so athletes can be misclassified. Use it only as a rough screening number and discuss your health with a doctor.
Yes. Use Copy to copy the result or full example. Share creates a link that puts your chosen values into the URL fragment so another person can reproduce the calculation. Your named saves and recent history stay in your own browser.