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BMI Calculator
Free BMI calculator. Enter your weight and height in metric (kg/cm) or imperial (lbs/ft) units to instantly calculate your Body Mass Index, weight category, and healthy weight range.
BMI is a screening tool, not a diagnostic measure. It does not account for muscle mass, bone density, or fat distribution. Consult a healthcare professional for personalised advice.
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Frequently Asked Questions
What is a healthy BMI?
A BMI between 18.5 and 24.9 is considered a healthy weight for most adults. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is considered obese.
Is BMI accurate?
BMI is a useful screening tool but has limitations. It does not account for muscle mass, bone density, age, or fat distribution. Athletes may have a high BMI despite low body fat. Always consult a healthcare professional for a full assessment.
How do I calculate BMI?
BMI is calculated by dividing your weight in kilograms by your height in metres squared (BMI = kg/m²). For example, if you weigh 70 kg and are 1.75 m tall, your BMI is 70 ÷ (1.75 × 1.75) = 22.9.
What is the BMI formula in imperial units?
In imperial units, BMI = (weight in lbs × 703) ÷ (height in inches)². Our calculator handles the conversion automatically.
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