BMI Calculator

Calculate your Body Mass Index (BMI) to assess your weight status and get personalized health recommendations.

BMI Calculator

Enter your weight and height to calculate your BMI

Weight

Height

BMI Categories

UnderweightBelow 18.5

Normal weight18.5 - 24.9

Overweight25.0 - 29.9

Obese30.0 and above

Health Tips

• Maintain a balanced diet with fruits and vegetables
• Exercise regularly (150 minutes per week)
• Stay hydrated with plenty of water
• Get adequate sleep (7-9 hours per night)
• Monitor your weight regularly
• Consult healthcare providers for personalized advice

Understanding BMI (Body Mass Index)

What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is weight in kilograms and m² is height in metres squared. BMI is a useful measure of overweight and obesity.

BMI Formula

Metric Units: BMI = weight (kg) ÷ height (m)²

Imperial Units: BMI = (weight (lbs) ÷ height (inches)²) × 703

Limitations of BMI

BMI is a screening tool and not a diagnostic tool. It does not directly measure body fat. Athletes with high muscle mass may have a high BMI but low body fat. Always consult healthcare professionals for comprehensive health assessment.

Frequently Asked Questions

How accurate is BMI?

BMI is a useful screening tool for weight categories but doesn't directly measure body fat. It may not be accurate for athletes, pregnant women, elderly, or those with muscle mass variations.

Is BMI the same for men and women?

Yes, the BMI calculation and categories are the same for both men and women aged 20 and older. However, women typically have more body fat than men at the same BMI.

What should I do if my BMI is outside the normal range?

If your BMI indicates you're underweight, overweight, or obese, consider consulting with a healthcare provider. They can provide personalized advice based on your overall health, lifestyle, and medical history.

Can children use this BMI calculator?

This calculator is designed for adults aged 20 and older. Children and teens have different BMI interpretations based on age and sex percentiles. Consult pediatric BMI charts for children.