BMI Calculator
Calculate your Body Mass Index and check your health status.
Free BMI Calculator: Check Your Body Mass Index
Use our advanced BMI Calculator to instantly calculate Body Mass Index and determine your healthy weight range. Whether you are tracking fitness goals or checking obesity risk, this tool provides accurate results based on WHO standards for adults and teens.
BMI Categories & Health Risks
Understanding your weight status is the first step to better health. Here is the standard classification:
| BMI Range | Weight Status | Health Risk |
|---|---|---|
| < 18.5 | Underweight | Malnutrition risk |
| 18.5 – 24.9 | Healthy Weight | Low Risk |
| 25.0 – 29.9 | Overweight | Moderate Risk |
| ≥ 30.0 | Obese | High Risk |
*Based on World Health Organization (WHO) guidelines for adults aged 20+.
1. Enter Your Details
Input your height and weight. Our BMI Calculator accepts both Metric (cm/kg) and Imperial (ft/lbs) units automatically.
2. Instant Calculation
We use the standard formula (weight / height²) to calculate Body Mass Index accurately in milliseconds.
3. Analyze Results
Get your score, weight status, and a personalized healthy weight range to aim for.
Why Monitor Your Body Mass Index?
Knowing how to calculate BMI is essential for understanding your overall health. It serves as a reliable screening tool for potential health issues related to weight.
Heart Health
Maintaining a healthy weight reduces the risk of heart disease, high blood pressure, and stroke.
Diabetes Prevention
Monitoring your obesity risk helps in early detection and prevention of Type 2 diabetes.
Fitness Goals
Use the BMI Calculator to set realistic weight loss or muscle gain targets based on scientific data.
Frequently Asked Questions About BMI
❓ How do I calculate my BMI manually?
The formula is weight (kg) / [height (m)]². For example, if you weigh 70kg and are 1.75m tall: 70 ÷ (1.75 × 1.75) = 22.9. Our BMI Calculator does this math for you instantly.
❓ What is a healthy BMI range?
For most adults, a healthy weight corresponds to a BMI between 18.5 and 24.9. Below 18.5 is underweight, while 25+ indicates overweight or obesity.
❓ Is BMI accurate for athletes?
BMI may overestimate body fat in athletes with high muscle mass. While it’s a great general body mass index screener, consult a doctor for a precise body composition analysis if you are very muscular.