BMI Calculator
Check your Body Mass Index and weight category
How to Use BMI Calculator
- Enter your weight in kilograms
- Enter your height in centimeters
- Click "Calculate BMI" to get your Body Mass Index
- Review your BMI category and health status
BMI Formula Explained
BMI = Weight (kg) / Height² (m²)
Your height in centimeters is converted to meters by dividing by 100. BMI helps classify underweight, normal weight, overweight, and obesity.
BMI Calculation Example
For a person weighing 70 kg and height 175 cm (1.75 m): BMI = 70 / (1.75 × 1.75) = 22.86, which falls in the Normal weight category.
BMI Categories
- Underweight: BMI < 18.5 (may indicate malnutrition)
- Normal weight: BMI 18.5 – 24.9 (healthy range)
- Overweight: BMI 25 – 29.9 (increased health risks)
- Obese: BMI ≥ 30 (higher risk of health issues)
Why BMI is Important
- Simple indicator of body fat based on height and weight
- Helps identify potential health risks
- Used by healthcare professionals for initial assessment
- Tracks progress during weight management
Limitations of BMI
- Does not distinguish between muscle and fat
- May not be accurate for athletes or bodybuilders
- Does not consider age, gender, or ethnicity
- Not suitable for children or pregnant women
Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a measure of body fat based on height and weight.
What is a healthy BMI?
A healthy BMI range is 18.5 to 24.9 for most adults.
Is BMI accurate?
BMI is a useful screening tool but consult a doctor for comprehensive health assessment.
How to improve BMI?
Focus on balanced diet, regular exercise, and healthy lifestyle changes.
Can BMI be wrong?
BMI may not reflect body composition accurately for some individuals.
Explore Related Health Tools
Check out our Calorie Calculator for daily energy needs, Age Calculator for age calculations, and Percentage Calculator for percentage calculations.