BMI Calculator
Modify the values and click the calculate button to use
About BMI
The Body Mass Index (BMI) Calculator can be used to calculate BMI value and corresponding weight status while taking age into consideration. BMI is a measurement of a person’s leanness or corpulence based on their height and weight, and is intended to quantify tissue mass. It is widely used as a general indicator of whether a person has a healthy body weight for their height.
BMI table for adults
This is the World Health Organization’s (WHO) recommended body weight based on BMI values for adults. It is used for both men and women, age 20 or older.
| Classification | BMI range – kg/m2 |
|---|---|
| Severe Thinness | < 16 |
| Moderate Thinness | 16 – 17 |
| Mild Thinness | 17 – 18.5 |
| Normal | 18.5 – 25 |
| Overweight | 25 – 30 |
| Obese Class I | 30 – 35 |
| Obese Class II | 35 – 40 |
| Obese Class III | > 40 |
How to Use the BMI Calculator
This tool makes it easy to check your Body Mass Index (BMI) and understand whether your weight is healthy. Follow these simple steps:
Step 1: Select Your Language
Choose your preferred language from the dropdown menu:
✅ English, Urdu, Spanish, Arabic, or Chinese
Step 2: Enter Your Weight
- Type your weight in the input box.
- Select your preferred unit:
- Kilograms (kg) – Used worldwide (metric system).
- Pounds (lbs) – Common in the US and UK.
Step 3: Enter Your Height
- If using centimeters (cm):
- Enter your height in cm (e.g., 170 cm).
- If using feet & inches (ft/in):
- Enter feet (e.g., 5) and inches (e.g., 9).
Step 4: Click “Calculate”
Instantly see your:
📊 BMI Score – A number indicating your weight category.
📌 Weight Status – Underweight, Normal, Overweight, or Obese.
🎯 Ideal Weight Range – The healthy weight for your height.
Example Calculation
- Weight: 70 kg (154 lbs)
- Height: 175 cm (5’9″)
- BMI Result: 22.9 (Normal Weight)
- Ideal Weight Range: 56.7 kg – 76.3 kg (125 lbs – 168 lbs)
Tips for Best Results
✔ Measure accurately – Use a scale and measuring tape.
✔ Check barefoot – Height can vary slightly with shoes.
✔ Consult a doctor – BMI is a general guide, not medical advice.
Here are 10 well-structured FAQs for the BMI calculator with clear, helpful answers:
Q1: What is BMI and why is it important?
A: BMI (Body Mass Index) is a numerical value calculated from your weight and height that helps categorize whether you’re underweight, normal weight, overweight, or obese. It’s a quick screening tool for potential weight-related health risks.
Q2: How accurate is this BMI calculator?
A: Our calculator uses the standard WHO BMI formula with precise unit conversions. However, BMI doesn’t account for muscle mass or body composition, so athletes or muscular individuals may get misleading results.
Q3: Which units of measurement does this calculator support?
A: You can use:
- Weight: kilograms (kg) or pounds (lbs)
- Height: centimeters (cm) or feet+inches (ft+in)
Q4: Why does my BMI category matter?
A: Your BMI category indicates potential health risks:
• Underweight (<18.5): Nutritional deficiencies risk
• Normal (18.5-24.9): Lowest health risks
• Overweight (25-29.9): Increased disease risk
• Obese (≥30): High risk of serious conditions
Q5: How often should I check my BMI?
A: For adults, checking every 3-6 months is sufficient unless you’re actively trying to lose/gain weight. Children and teens should use age/gender-specific BMI charts instead.
Q6: Why does the calculator show an ideal weight range?
A: The range (BMI 18.5-24.9) represents weights associated with the lowest health risks for your height. It’s a target zone for maintaining good health.
Q7: My BMI says I’m obese but I’m muscular. Is this wrong?
A: Possibly. BMI can’t distinguish between muscle and fat. If you have high muscle mass, consider body fat percentage measurements for more accuracy.
Q8: Can children use this BMI calculator?
A: This tool uses adult BMI categories. Children’s BMI requires age/gender percentiles – consult a pediatric growth chart instead.
Q9: What’s the difference between BMI and body fat percentage?
A: BMI estimates body fat indirectly through height/weight, while body fat percentage measures fat directly (via calipers/scans). BMI is simpler; body fat % is more precise.
Q10: Where can I get personalized advice about my BMI results?
A: Consult your doctor or a registered dietitian for interpretation of your BMI and personalized recommendations based on your health history and goals.