Maintaining a healthy weight is an important part of overall well-being. Our
BMI Calculator helps you quickly determine your Body Mass Index, giving you insights into whether you fall into the
underweight, normal, overweight, or obese category. This tool is simple, reliable, and widely used by individuals and health professionals.
BMI (Body Mass Index) Calculator
What is BMI?
Body Mass Index (BMI) is a number calculated using a person’s weight and height. It provides a simple way to assess whether someone has a healthy body weight relative to their height. Although BMI does not directly measure body fat, it is a widely accepted method for classifying weight categories and potential health risks.
Why is BMI Used?
BMI is used because it provides a quick, inexpensive, and non-invasive way to assess weight categories across large populations. Unlike other complex tests, BMI can be calculated instantly and gives a reliable indicator of whether someone may be underweight, overweight, or at risk of obesity-related health problems.
Where is BMI Used?
- Healthcare: Doctors use BMI as a screening tool for weight-related health risks.
- Fitness and Wellness: Trainers and dietitians assess BMI to design personalized workout and nutrition plans.
- Public Health: Governments and organizations track BMI data to monitor population health trends.
- Personal Tracking: Individuals use BMI calculators to monitor their own health and fitness journey.
Benefits of Using a BMI Calculator
- ✅ Quick and easy – just enter your weight and height.
- ✅ Accessible – no special equipment required.
- ✅ Awareness – helps identify potential health risks.
- ✅ Goal setting – supports fitness and diet planning.
- ✅ Widely recognized – used worldwide in health studies and medical assessments.
BMI Classification Table
| BMI Range | Category |
|---|---|
| Less than 18.5 | Underweight |
| 18.5 – 24.9 | Normal weight |
| 25 – 29.9 | Overweight |
| 30 and above | Obese |
BMI Formulas
There are two main formulas depending on the measurement system:
Metric Formula
BMI = Weight (kg) ÷ (Height (m))²
Imperial Formula
BMI = (703 × Weight (lbs)) ÷ (Height (in))²
FAQs About BMI
Q1. What is a healthy BMI range?
A BMI between 18.5 and 24.9 is considered normal or healthy weight.
Q2. Does BMI measure body fat?
No, BMI does not directly measure body fat. It only estimates weight relative to height. Muscle mass, bone density, and other factors can affect results.
Q3. Can children use a BMI calculator?
Yes, but children’s BMI is assessed differently using age- and gender-specific growth charts.
Q4. Why is my BMI high even though I exercise?
If you have high muscle mass, your BMI may be higher even if your body fat percentage is low.
Q5. Is BMI the same for men and women?
Yes, BMI is calculated the same way for both, but body composition differences mean interpretation may vary.