Free Online BMI Calculator - Check Your Body Mass Index
Calculate your Body Mass Index (BMI) instantly with our free, easy-to-use tool. Knowing your BMI is a helpful starting point for understanding your general health and weight status.
What is Body Mass Index (BMI)?
Body Mass Index (BMI) is a simple numerical measure that estimates body fat based on your height and weight. It applies to adult men and women, generally ages 18 to 65. While it's not a diagnostic tool, it serves as an excellent screening metric to identify potential weight problems for adults.
How Does Our BMI Calculator Work?
Our interface allows you to compute your BMI using Metric (cm/kg) or Imperial/US (ft/lbs) units seamlessly:
- Select your preferred measurement system.
- Enter your height and weight.
- Discover your BMI score, weight category, and healthy weight range immediately.
Standard BMI Categories
The World Health Organization (WHO) provides the standard BMI categories:
- Underweight (Under 18.5): Indicates you may need to gain weight. Consult a physician or registered dietitian for advice.
- Normal Weight (18.5 – 24.9): You are at a healthy weight for your height. Aim to maintain this range through balanced eating and regular physical activity.
- Overweight (25.0 – 29.9): You may be slightly over your ideal weight. Losing a modest amount of weight can improve your overall health.
- Obesity (30.0 and above): A high BMI can lead to cardiovascular diseases, type 2 diabetes, and other health issues. Professional medical advice is highly recommended.
Limitations of BMI
While BMI is quick and universally used, it does have some limitations. Because it relies entirely on weight and height, it does not distinguish between:
- Muscle mass and fat mass (Bodybuilders may register as obese).
- Variations in bone density.
- Distribution of fat (Visceral vs. Subcutaneous fat).
- Differences based on age, sex, and ethnicity.
Why Use the Lembog BMI Calculator?
- Fast and Accurate: Built on strict international formulas.
- Privacy-focused: All calculations run on your device. We do not store or transmit your sensitive health data.
- Dual Units: Support for both Metric and Imperial units for users worldwide.
- Responsive Design: Super clean, user-friendly interface that looks gorgeous on mobile phones, tablets, and desktop computers.
Check Your Health Status Today
Do not rely on BMI alone for a complete picture of your health. However, taking a few seconds to calculate it gives you a baseline measurement. Start building your healthy lifestyle with Lembog tools today!