BMI Calculator
Calculate your Body Mass Index (BMI) and discover your ideal weight range. Get instant health insights based on your height and weight.
📊 Enter Your Information
Your BMI Result
💚 Your Ideal Weight Range
📋 BMI Classification (Chinese Adult Standard)
| BMI Range | Classification | Status | Description |
|---|---|---|---|
| < 18.5 | Underweight | Below Normal | May indicate malnutrition or health issues |
| 18.5 - 23.9 | Normal | Healthy Range | Ideal weight for optimal health |
| 24.0 - 27.9 | Overweight | Risk Increased | Increased risk of health problems |
| ≥ 28.0 | Obese | High Risk | Significantly increased health risks |
🏥 Health Impact by BMI Category
Underweight
- • Weakened immune system
- • Fatigue and low energy
- • Hormonal imbalances
- • Nutritional deficiencies
Normal Weight
- • Optimal health status
- • Lower disease risk
- • Better energy levels
- • Improved quality of life
Overweight
- • Elevated blood lipids
- • Joint stress increase
- • Higher blood pressure
- • Sleep quality issues
Obese
- • High blood pressure risk
- • Type 2 diabetes risk
- • Cardiovascular disease
- • Reduced life expectancy
🧮 BMI Calculation Formula
Body Mass Index is calculated by dividing your weight in kilograms by the square of your height in meters.
📝 Example Calculation:
Given: Height = 170 cm, Weight = 65 kg
Step 1: Convert height to meters: 170 cm = 1.7 m
Step 2: Calculate height squared: 1.7 × 1.7 = 2.89 m²
Step 3: Divide weight by height squared: 65 ÷ 2.89 = 22.5
Result: BMI = 22.5 (Normal Range)
❓ BMI / MBI / BML / BIM / IBM - What's the Difference?
BMI (Body Mass Index)
This is the CORRECT term. BMI stands for Body Mass Index, a widely recognized health metric.
MBI Index
Common misspelling of BMI. The correct term is BMI (Body Mass Index).
BML Calculation
Another common typo. Should be BMI (Body Mass Index).
BIM Index
Another common misspelling of BMI. The correct term is BMI (Body Mass Index).
IBM Weight
Incorrect search term. IBM is a technology company. The health metric is BMI.
❓ Frequently Asked Questions
What is a normal BMI range?
For Chinese adults, a normal BMI range is 18.5 to 23.9. This range is associated with the lowest health risks and optimal well-being. International standards may vary slightly (18.5-24.9).
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat mass, so athletes or bodybuilders with high muscle mass may have elevated BMI despite being healthy. It's also less accurate for elderly individuals, pregnant women, and children.
What if I have high BMI but lots of muscle?
If you're very muscular or athletic, your BMI may be high even though you're healthy. In this case, consider additional measurements like body fat percentage, waist circumference, or consult a healthcare professional for a comprehensive assessment.
Can children use this BMI calculator?
This calculator is designed for adults (18+ years). Children and teenagers require age and gender-specific BMI percentile charts because their body composition changes as they grow. Consult a pediatrician for children's BMI assessment.
What's the difference between BMI and body fat percentage?
BMI is a simple calculation based on height and weight that estimates overall body mass. Body fat percentage measures the actual proportion of fat in your body composition. Body fat percentage is more accurate but requires specialized equipment to measure, while BMI is quick and easy to calculate.
How often should I check my BMI?
For general health monitoring, checking your BMI once every 1-3 months is sufficient. If you're actively trying to lose or gain weight, you might check weekly or bi-weekly to track progress. Remember that healthy weight changes happen gradually.
⭐ User Reviews
This BMI calculator is incredibly easy to use! I love how it shows my ideal weight range and explains what each category means. It's become my go-to tool for tracking my fitness progress.
I recommend this calculator to all my clients. The visual progress bar and detailed health impact information help them understand their current status better than just numbers alone.
The FAQ section is excellent! It addresses common misconceptions about BMI and explains when it might not be accurate. Perfect educational tool for my nutrition counseling sessions.
Calculate your BMI (Body Mass Index) instantly. Check if your weight is healthy with our free online BMI calculator. Get personalized health insights and ideal weight range.
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