BMI Calculator
Calculate your Body Mass Index (BMI) and find your healthy weight range based on height and weight. Free, instant, and informative health calculations.
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How to Calculate BMI
Enter Details
Enter your weight and height using metric or imperial units.
View BMI
See your BMI score and weight category instantly.
Check Range
View your healthy weight range for your height.
Why Use Our BMI Calculator?
Health Insights
Understand your weight category and healthy weight range.
Metric & Imperial
Enter weight and height in your preferred units.
Completely Free
No limits, no signup.
Private & Secure
Your health data never leaves your device.
Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a measure of body fat based on height and weight. It is calculated as weight (kg) divided by height (m) squared.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5-24.9. Overweight: 25-29.9. Obese: 30 and above.
Is BMI accurate for everyone?
BMI is a general screening tool and does not account for muscle mass, bone density, or body composition. Athletes may have high BMI despite low body fat.
Is my data sent anywhere?
No. All calculations happen locally in your browser. Your health information is never stored or transmitted.
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is considered healthy for most adults. Consult a healthcare provider for personalized advice.