BMI Calculator

Calculate your Body Mass Index, discover your weight category, and find a healthy weight range for your height. Switch between metric and imperial units.

Units

Weight (kg)

Height (cm)

Your BMI

24.2

Normal

Your weight of 70.0 kg at a height of 170.0 cm places you in the Normal category.

Healthy weight range for your height

53.5 – 72.0 kg

Corresponds to a BMI of 18.5 to 24.9

BMI categories

Underweight< 18.5

Normal18.5 – 24.9

Overweight25.0 – 29.9

Obese30.0+

This calculator is for informational purposes only. Consult a healthcare professional for personalized advice.

Results are estimates only and should not be considered financial advice. Always consult a qualified professional before making financial decisions.

Formula

BMI = weight (kg) / height (m)²

Worked Example

For a person who is 70 kg and 170 cm tall: height in meters = 170 / 100 = 1.7 m. BMI = 70 / (1.7 × 1.7) = 70 / 2.89 ≈ 24.2, which falls in the Normal category. The healthy weight range for this height is about 53.5 kg to 71.9 kg.

Frequently Asked Questions

What is BMI?

BMI (Body Mass Index) is a simple measure that compares your weight to your height. It is widely used to screen for weight categories that may be linked to health problems, though it does not directly measure body fat.

What do the BMI categories mean?

For most adults, a BMI below 18.5 is underweight, 18.5 to 24.9 is normal weight, 25 to 29.9 is overweight, and 30 or above is obese. Higher BMIs are associated with an increased risk of certain health conditions.

Is BMI accurate for everyone?

BMI can overestimate body fat for muscular athletes and underestimate it for older adults. It is a screening tool rather than a diagnosis, so it makes sense to consider it alongside other health indicators.

How do I read the healthy weight range?

The healthy weight range shows the weights that correspond to a BMI between 18.5 and 24.9 for your current height. Staying inside this range is a general guideline, but individual health depends on many factors.

Frequently Asked Questions

What is BMI?

What do the BMI categories mean?

Is BMI accurate for everyone?

How do I read the healthy weight range?

BMI Calculator

Formula

Worked Example

Frequently Asked Questions

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BMI Calculator

Formula

Worked Example

Frequently Asked Questions

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