BMI Calculator
Calculate your Body Mass Index instantly using height and weight. See if you fall into the underweight, normal, overweight, or obesity range.
BMI Calculator
Calculate your Body Mass Index instantly using height and weight. See if you fall into the underweight, normal, overweight, or obesity range.
BMI Range
Scale 10–40
Enter height and weight to see your position.
BMI Calculator – Body Mass Index with Metric & Imperial Units
Calculate your Body Mass Index (BMI) with our free BMI Calculator. Simply enter your height and weight in either metric (cm/kg) or imperial (ft/lb) units to see your result instantly. The calculator not only gives you the BMI number but also shows your weight category – underweight, normal, overweight, or obesity – on a clear color scale.
How the BMI is calculated
The BMI formula is weight divided by height squared: BMI = weight (kg) ÷ [height (m)]².
For example, a person weighing 70 kg with a height of 1.75 m would have a BMI of 22.9, which is in the 'normal' range.
BMI categories explained
Underweight: Below 18.5
Normal weight: 18.5 – 24.9
Overweight: 25 – 29.9
Obesity: 30 and above
Why use this BMI Calculator?
Our BMI Calculator makes it easy to check where you stand. Whether you are trying to lose weight, track your health, or just curious, this tool gives you a quick overview of your body mass index.
Note: The BMI is a general guideline and does not account for factors such as muscle mass, age, or body composition. For a full health assessment, consult a medical professional.
Frequently Asked Questions
- What is the normal BMI range?
- According to the World Health Organization, a BMI between 18.5 and 24.9 is considered normal weight.
- Can BMI be used for children?
- BMI values for children and teenagers are interpreted differently and depend on age and sex. Consult a pediatric chart or doctor for accurate results.
- How accurate is the BMI?
- BMI is a general guideline and does not account for muscle mass, age, or body composition. For a full health assessment, consult a professional.
Use our free BMI Calculator to check your category instantly and explore more health tools like Calorie or BMR calculators soon.
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