BMI Calculator
The BMI calculator allows you to quickly calculate your body mass index based on your weight and height. This simple indicator is widely used to assess your body composition and determine your weight category. In just a few seconds, get your BMI and a first insight into your physical condition to better guide your fitness and health goals.
Advanced BMI Calculator
BMI, estimated body fat, FFMI and overall profile in one interface
| Marker | Value | Reading |
|---|---|---|
| Run a calculation to display your markers. | ||
| BMI | Interpretation | Category |
|---|---|---|
| < 18.5 | Below standard reference range | Underweight |
| 18.5 to 24.9 | Reference range | Normal weight |
| 25 to 29.9 | Moderate excess body weight | Overweight |
| 30 to 34.9 | High excess body weight | Moderate obesity |
| ≥ 35 | Significant excess body weight | Severe obesity |
• BMI: general reference based on body weight and height.
• Estimated body fat: statistical estimate only, useful as a broad marker but not equivalent to a real measurement.
• FFMI: relative lean mass indicator, especially interesting for sport / fitness profiles.
BMI Calculator: assess your body mass index
- The BMI calculator (Body Mass Index) allows you to quickly assess your body composition based on your weight and height. This widely used indicator helps determine whether you are underweight, at a healthy weight, overweight, or obese.
- BMI is a simple and accessible tool to get a first overview of your physical condition. It can help you set goals, monitor your progress, and better understand your current health status as part of a fitness or weight management plan.
- With this calculator, you can instantly calculate your BMI and get a clear interpretation of your category. For a more complete analysis, it is recommended to combine BMI with other indicators such as body fat percentage, fitness level, or activity level.
How to calculate your BMI?
Body Mass Index (BMI) is calculated using a simple formula:
- BMI = weight (kg) / height² (m)
- For example, a person who is 1.75 m tall and weighs 70 kg has a BMI of 22.9. This calculation helps classify your body weight according to widely accepted health standards.
How to interpret your BMI?
Your BMI allows you to classify your body weight into different categories:
- Below 18.5: underweight
- 18.5 – 24.9: normal weight
- 25 – 29.9: overweight
- 30 – 34.9: obesity (class I)
- 35 and above: obesity (class II and III)
These values are general guidelines and should be interpreted with caution. BMI does not account for muscle mass, fat distribution, or individual differences.
What are the limitations of BMI?
- BMI is a useful general indicator, but it has limitations. It does not distinguish between muscle mass and fat mass, which means it can be misleading for athletes or highly trained individuals.
- It also does not take into account important factors such as age, gender, or fat distribution. For a more accurate assessment, it is recommended to combine BMI with other metrics such as body fat percentage, waist circumference, or overall fitness level.
BMI Calculator: FAQ
What is a healthy BMI?
A BMI between 18.5 and 24.9 is generally considered a healthy weight range according to health guidelines.
Is BMI accurate for athletes?
Not always, as BMI does not differentiate between muscle and fat. Athletes may have a high BMI while being in excellent shape.
Can BMI be used to track progress?
Yes, but it should be combined with other indicators such as body composition or fitness level.
Is BMI suitable for everyone?
BMI is a general indicator and may be less accurate for certain populations such as athletes, elderly individuals, or children.
To go beyond simply tracking calorie burn and better structure your workout, you can also use our:
Use these calculators as a first step, then move on to a more comprehensive analysis of your data and training to build an individualized framework, consistent with your goals.