BMI Calculator

How it works

1. Enter your weight in kg. 2. Enter your height in cm. 3. Click Calculate BMI.

When to use it

The BMI calculator is useful for:

• Personal check-up: monitor your body mass index over time to track your fitness journey progress.
• Medical visit: calculate BMI before a medical appointment to have a starting point to discuss with your doctor.
• Diet programs: assess if your weight falls within the normal range before starting a new dietary regime.
• Sports: use BMI as a base indicator to evaluate your body composition in a sports context.
• Health education: educational tool for understanding the relationship between weight and height.

Advantages

Instant calculation. Weight category. Ideal weight range. Free and no registration.

Benefits vs alternatives

Why our BMI calculator:

• WHO classification: uses the official World Health Organization classifications.
• Instant result: enter weight and height, get BMI and category in one second.
• No data saved: unlike fitness apps, we don't save your body data.
• Informative: clearly explains BMI limitations and when to consult a doctor.
• Multilingual: available in 6 languages for international users.

Common mistakes to avoid

1. BMI doesn't measure body composition: BMI doesn't distinguish between muscle mass and fat. A muscular athlete may be classified as "overweight" by BMI.
2. Not valid for children: standard BMI is calibrated for adults. For children and adolescents, BMI-for-age percentiles are used.
3. Ethnic differences: standard BMI thresholds are based on Caucasian populations. Some ethnicities have different metabolic risks at the same BMI.
4. Confusing BMI with health: BMI is a screening indicator, not a diagnosis. A "normal" BMI doesn't necessarily mean being healthy.
5. Units of measurement: make sure to enter weight in kg and height in cm. Mixing units produces completely wrong results.

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