BMI Calculator
Calculate your Body Mass Index and understand your health category
Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.
BMI Categories:
- Underweight: BMI less than 18.5
- Normal weight: BMI 18.5 to 24.9
- Overweight: BMI 25 to 29.9
- Obese: BMI 30 or greater
Note: BMI is a screening tool and does not diagnose body fatness or health. Consult with a healthcare provider for health assessments.
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Your Result
Enter your details to calculate BMI
About this Tool
Body Mass Index (BMI) is a widely-used screening tool that helps assess whether a person has a healthy body weight relative to their height. While BMI doesn't directly measure body fat, it provides a quick and easy way to identify potential weight-related health risks. Healthcare professionals use BMI as one of several factors when evaluating overall health status. It's important to note that BMI is most accurate for adults aged 20 and older, and may not be appropriate for athletes, pregnant women, or individuals with certain medical conditions.
Common Use Cases
Health Screening
Healthcare providers use BMI as an initial screening tool to identify patients who may benefit from further health assessments and lifestyle counseling.
Weight Management Goals
Track your progress when working toward weight loss or gain goals by monitoring BMI changes over time alongside other health metrics.
Insurance Assessments
Many insurance companies use BMI as one factor in determining health insurance premiums and coverage eligibility.
Fitness Planning
Establish baseline measurements before starting a new fitness or nutrition program to track effectiveness over time.
Pro Tips
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Measure Accurately
For the most accurate BMI calculation, measure your weight first thing in the morning after using the bathroom, and measure height without shoes against a flat wall.
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Consider Body Composition
BMI doesn't distinguish between muscle and fat. Athletes with high muscle mass may have elevated BMI despite low body fat percentage.
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Track Trends Over Time
Rather than focusing on a single BMI measurement, track changes over several months to identify meaningful patterns and trends.
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Consult Healthcare Professionals
Always discuss BMI results with your doctor, especially if you have concerns about your weight or overall health. BMI is just one tool among many.