BMI Calculator

Calculate body mass index with indicative adult category classification.
Height
Weight
0 BMI
Severe underweight

Body Mass Index (BMI)

Body Mass Index (BMI) is a simple and convenient way to assess whether your weight corresponds to your height. This indicator is widely used to determine if a person’s weight is within the normal range or if there are deviations indicating underweight or overweight.

How is BMI calculated

The BMI formula is straightforward:

BMI=Weight (kg)Height (m)2\text{BMI} = \frac{\text{Weight (kg)}}{\text{Height (m)}^2}

For example, if your weight is 70 kg and your height is 1.75 m, your BMI would be:

BMI=701.752≈22.86\text{BMI} = \frac{70}{1.75^2} \approx 22.86

With the ARIFMERA BMI Calculator, you can calculate this in just a few clicks.

What BMI values are considered normal

  • Below 16 - Severe underweight
  • 16–18.4 - Underweight
  • 18.5–24.9 - Normal weight
  • 25–29.9 - Overweight (pre-obesity)
  • 30–34.9 - Obesity class I
  • 35–39.9 - Obesity class II
  • Above 40 - Obesity class III

Why should you know your BMI

BMI helps assess health risks associated with weight. For instance, being overweight or obese may increase the likelihood of cardiovascular diseases, diabetes, and other health issues. On the other hand, underweight can also indicate health problems.

Important to note

BMI is a general guideline. It does not account for individual factors such as muscle mass, body type, or age. For a more accurate health assessment, consult a healthcare professional.

How to use this tool

The calculator derives body mass index from height and weight. BMI is useful as an initial adult weight screening measure, but it is not a diagnosis.

Steps

  1. Enter height and weight in convenient units.
  2. Compare the calculated BMI with adult ranges.
  3. Discuss the result with a healthcare professional if it raises health concerns.

Useful for

  • Initial weight screening
  • Tracking changes over time
  • Preparing for a consultation

Limits and accuracy

  • BMI does not measure body fat or distinguish fat, muscle, and bone mass.
  • Categories for children and teenagers depend on age and sex; this calculator is intended for adults.
  • The result is not a substitute for medical advice.

Privacy

Height, weight, and the result are calculated only in your browser.

Sources