BMI Calculator - Body Mass Index Calculator
Calculate your Body Mass Index (BMI) with our professional calculator. Get instant results and personalized health recommendations.
Calculate Your BMI
Professional and accurate health assessment tool
The BMI (Body Mass Index) calculator helps you assess your weight status and potential health risks based on your height and weight.
Instructions
- 1Enter your height in the "Height" field (unit: cm)
- 2Enter your weight in the "Weight" field (unit: kg)
- 3Click "Calculate BMI" button to get results
- 4Your BMI value and corresponding body status will be displayed
Note: This calculator is suitable for adults aged 18-65. Children, teenagers, pregnant women, nursing mothers, elderly, and athletes may need different assessment methods.
BMI Reference Table
| Category | WHO Standard | Asian Standard | Chinese Reference | Disease Risk |
|---|---|---|---|---|
| Underweight | <18.5 | <18.5 | <18.5 | Low |
| Normal | 18.5~24.9 | 18.5~22.9 | 18.5~23.9 | Average |
| Overweight | ≥25 | ≥23 | ≥24 | Increased |
| Pre-obesity | 25.0~29.9 | 23~24.9 | 24~26.9 | Increased |
| Obesity I | 30.0~34.9 | 25~29.9 | 27~29.9 | Moderate |
| Obesity II | 35.0~39.9 | ≥30 | ≥30 | High |
| Obesity III | ≥40.0 | - | - | Very High |
Health Recommendations
Maintaining a Healthy BMI
A balanced diet and regular physical activity are key to maintaining a healthy BMI. Aim for at least 150 minutes of moderate exercise or 75 minutes of vigorous exercise per week.
Diet Tips
Focus on eating plenty of fruits, vegetables, whole grains, and lean proteins. Limit processed foods, sugary drinks, and excessive portions.
Exercise Recommendations
Include both cardio exercises (like walking, swimming, or cycling) and strength training in your routine. Start slowly and gradually increase intensity.
Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a simple measure that uses your height and weight to work out if your weight is healthy. The BMI calculation divides an adult's weight in kilograms by their height in metres squared.
Why is BMI important?
BMI is an important indicator of health risks associated with being underweight or overweight. It can help identify potential health issues and guide healthcare professionals in providing appropriate advice.
What are the limitations of BMI?
BMI is not a perfect measure as it doesn't account for factors like muscle mass, bone density, age, and ethnicity. Athletes or muscular individuals might have a high BMI but not be overweight. It's best used as one of several health assessment tools.
How often should I check my BMI?
It's recommended to check your BMI whenever there are significant changes in your weight or every 6-12 months as part of your regular health check-up.
What should I do if my BMI is outside the healthy range?
If your BMI is outside the healthy range (18.5-24.9), consider consulting a healthcare professional. They can provide personalized advice based on your individual circumstances, including diet and exercise recommendations.
BMI Categories and Health Implications
- Underweight (BMI below 18.5): May indicate nutritional deficiencies
- Normal Weight (BMI 18.5-24.9): Healthy weight range
- Overweight (BMI 25-29.9): Increased risk of health issues
- Obese (BMI 30 or above): High risk of health problems