BMI Calculator | Body Mass Index and Weight Range
Calculate body mass index from height and weight, then see the BMI category and an estimated healthy weight range.
BMI Score
Estimated Healthy Weight Range
Calculate Body Mass Index from Height and Weight
Enter height and weight to calculate BMI, see the BMI category, and estimate a general healthy weight range for the selected height.
BMI Is a Screening Estimate
BMI does not measure muscle mass, body fat distribution, age, pregnancy, athletic build, or medical history. Treat it as a basic screening number.
When BMI Can Be Useful
Use BMI for a quick wellness reference, progress notes, or general weight category awareness. Ask a qualified professional before making health decisions from one number.
About This Tool
BMI Calculator computes body mass index from height and weight and shows the corresponding weight category: underweight, normal, overweight, or obese. It also displays an estimated healthy weight range for your height.
When to Use It
Use this as a quick wellness reference when tracking fitness progress, when checking whether your current weight falls within a healthy range, or when a medical form asks for your BMI.
How to Use
- Enter your height in centimetres.
- Enter your weight in kilograms.
- Click Calculate to see your BMI score and category.
- Review the healthy weight range for your height.
Frequently Asked Questions
Is BMI an accurate measure of health?
BMI is a screening tool only. It does not account for muscle mass, bone density, age, or sex. Athletes often have a high BMI despite low body fat.
What is a normal BMI range?
The WHO defines normal BMI as 18.5 to 24.9. Below 18.5 is underweight, 25 to 29.9 is overweight, and 30 or above is obese.
Can children use this BMI calculator?
Standard BMI charts are designed for adults aged 20 and older. Children and teenagers require age-specific percentile charts.