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BMI Calculator: Body Mass Index & Weight Range

Calculate your Body Mass Index (BMI) instantly and check if you're in a healthy weight range. Our free calculator also shows your BMR, body fat percentage, and daily calorie needs.

Your Details

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Your BMI
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⚠️ Disclaimer: BMI is a screening tool and does not directly measure body fat. Consult a healthcare provider for comprehensive health assessment.

Understanding Your BMI

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

1

Enter Your Details

Input your height and weight using metric or imperial units.

2

View Your BMI

See your BMI value and which category you fall into.

3

Check the Scale

See where you fall on the BMI scale visualization.

Frequently Asked Questions

What is a healthy BMI range?

A healthy BMI range for adults is 18.5 to 24.9. This range is associated with the lowest health risks according to WHO research.

Is BMI accurate for everyone?

BMI is a screening tool, not a diagnostic. It may not be accurate for athletes (high muscle mass), elderly (muscle loss), pregnant women, or children. Always consult a healthcare professional for a complete health assessment.

What is the difference between BMI and body fat percentage?

BMI is calculated from height and weight only, while body fat percentage estimates the actual proportion of fat in your body. Body fat percentage is more accurate but requires additional measurements or equipment.

How is BMR different from BMI?

BMI measures weight relative to height, while BMR (Basal Metabolic Rate) estimates how many calories your body burns at rest. Both are useful health indicators but measure different things.

What BMI formula is used?

The standard WHO formula is: BMI = weight(kg) / height(m)². For imperial units: BMI = weight(lbs) / height(in)² × 703.