BMI Calculator
Calculate your Body Mass Index (BMI) instantly using metric or imperial measurements. This free online BMI calculator helps estimate whether your weight falls within an underweight, healthy, overweight or obese BMI category.
What is BMI?
- BMI stands for Body Mass Index
- It compares body weight relative to height
- It is commonly used as a general health screening tool
- BMI can help estimate whether a person is underweight, healthy weight, overweight or obese
- It does not directly measure body fat, muscle mass or overall fitness
BMI categories
- Underweight: Below 18.5
- Healthy weight: 18.5 to 24.9
- Overweight: 25 to 29.9
- Obesity: 30 or above
BMI ranges are commonly used by healthcare providers as a simple screening guide, although individual health factors may vary.
Metric and Imperial Support
- Metric mode supports kilograms and centimeters
- Imperial mode supports pounds, feet and inches
- Results are calculated instantly in your browser
- No data is stored or shared
FAQ
Is this BMI calculator free?
Yes, it is completely free to use online.
Can I use metric units?
Yes, kilograms and centimeters are supported.
Can I use imperial units?
Yes, pounds, feet and inches are supported.
Is BMI always accurate?
BMI is a general screening tool and may not reflect muscle mass, body composition or athletic build.