BMI Calculator
Calculate your Body Mass Index (BMI) and determine if your weight is in a healthy range for your height.
BMI Calculator
Calculate your Body Mass Index and health category
Ideal Weight Range
Find your healthy weight range for your height
BMI Categories
Understanding BMI ranges and health implications
| BMI Range | Category | Health Risk |
|---|---|---|
| Below 18.5 | Underweight | Malnutrition risk |
| 18.5 - 24.9 | Normal weight | Low risk |
| 25.0 - 29.9 | Overweight | Enhanced risk |
| 30.0 - 34.9 | Moderately obese | Medium risk |
| 35.0 - 39.9 | Severely obese | High risk |
| Above 40 | Very severely obese | Very high risk |
How to Use the BMI Calculator
Step 1: Enter Your Weight
Enter your current weight in kilograms. If you know your weight in pounds, multiply by 0.453592 to convert to kg.
Step 2: Enter Your Height
Enter your height in centimeters. If you know your height in feet and inches, multiply feet by 30.48 and inches by 2.54, then add them together.
Step 3: Get Your Results
Your BMI will be calculated instantly, along with your health category and risk assessment.
BMI Formula
BMI = Weight (kg) ÷ Height (m)²
Frequently Asked Questions
What is a good BMI for my age?
A BMI between 18.5 and 24.9 is considered normal for adults. However, BMI doesn't account for muscle mass, bone density, or age-related changes. Consult with a healthcare provider for personalized assessment.
How accurate is BMI for athletes?
BMI may not be accurate for athletes or very muscular individuals, as muscle weighs more than fat. Body fat percentage and waist-to-hip ratio may be better indicators for athletic individuals.
Should I lose weight based on my BMI?
BMI is a screening tool, not a diagnostic tool. Consider other factors like waist circumference, overall health, and lifestyle. Always consult with a healthcare professional before starting any weight loss program.
How often should I check my BMI?
For general health monitoring, checking BMI monthly or quarterly is sufficient. If you're actively working on weight management, weekly checks can help track progress.