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BMI Calculator — Body Mass Index & Healthy Weight

Calculate your Body Mass Index (BMI) from weight and height, see your weight category, and find the healthy weight range for your height.

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✨ Key Capabilities

BMI from weight in kg and height in cm
Underweight, normal, overweight and obese categories
Healthy weight range for your exact height
Instant results as you type
Screening measure with a plain-English note on limits

📖 How to Use the BMI Calculator — Body Mass Index & Healthy Weight

Enter your weight in kilograms.
Enter your height in centimetres.
Read your BMI, category, and healthy weight range instantly.

❓ Frequently Asked Questions

What is a healthy BMI?

A BMI from 18.5 to 24.9 is generally classed as a healthy weight range for adults. Below 18.5 is underweight, 25 to 29.9 is overweight, and 30 or above is obese.

Is BMI accurate for everyone?

No. BMI is a screening measure only — it does not distinguish muscle from fat, so athletes, pregnant people, and older adults should interpret it with a clinician, not as a diagnosis.