BMI Calculator
Body Mass Index
All About - BMI Calculator
Online BMI Calculator
Calculate your Body Mass Index (BMI) instantly and accurately
A BMI calculator (Body Mass Index calculator) is a tool that measures body fat based on height and weight that applies to adult men and women. Use our free online BMI calculator to calculate your BMI instantly. It provides a quick and easy way to assess whether your weight is in a healthy range relative to your height.
Our BMI calculator is useful because your weight alone doesn't tell the whole story. A tall person may weigh more than a shorter person but still be at a healthy weight. BMI accounts for height, giving you a more meaningful number to work with. Calculate your BMI online for free using our body mass index calculator. Explore our comprehensive guides to understand your results better: BMI Formula, BMI Chart, and Healthy BMI Guide.
What is BMI Calculator?
A BMI calculator (Body Mass Index calculator) is a tool that measures body fat based on height and weight that applies to adult men and women. Use our free online BMI calculator to calculate your BMI instantly.
Our BMI calculator is useful because your weight alone doesn't tell the whole story. A tall person may weigh more than a shorter person but still be at a healthy weight. BMI accounts for height, giving you a more meaningful number to work with. Calculate your BMI online for free using our body mass index calculator.
Why BMI Matters
To work out your body mass index on your own and what the number means for you, you'll need the following:
Learn more about BMI Formula and how it works.
📊 Normal weight
BMI between 18.5-24.9 kg/m² indicates a healthy weight range for most adults.
⚖️ BMI Limitations
While BMI is a useful screening tool, it has some limitations. BMI doesn't directly measure body fat and may not be accurate for athletes, elderly individuals, or those with high muscle mass.
How to Use Our BMI Calculator
- 1Enter your height in centimeters or feet and inches
- 2Enter your weight in kilograms or pounds
- 3Click 'Calculate BMI' to get instant results
- 4Review your BMI category and health recommendations
BMI Categories
🟢 Normal weight
BMI: 18.5-24.9 kg/m²
Lowest health risks
🟡 Overweight
BMI: 25.0-29.9 kg/m²
Increased health risks
🔴 Obese
BMI: 30.0+ kg/m²
High health risks
For a complete breakdown of BMI categories, see our BMI Chart.
Frequently Asked Questions
What is a healthy BMI range?
A healthy BMI range is between 18.5 and 24.9. Healthy BMI Guide.
How is BMI calculated?
BMI is calculated by dividing weight in kilograms by height in meters squared.
Is BMI accurate for children?
BMI calculations for children are different from adults. BMI calculator for children.
Where can I learn more about BMI?
Learn more with our BMI Formula, BMI Chart, BMI for men, BMI for women, FAQ.
References & Sources
Our BMI calculator and information are based on established medical guidelines from: