To accurately calculate your BMI, you need to follow these steps:

- Measure your weight in kilograms (kg).
- Measure your height in meters (m).
- Square your height in meters (multiply your height by itself).
- Divide your weight in kilograms by the result obtained in step 3.

The formula for calculating BMI is:

BMI = weight (kg) / heightÂ² (mÂ²)

For example, if you weigh 70 kg and your height is 1.75 m, your BMI would be calculated as follows:

BMI = 70 / (1.75 x 1.75) = 22.86

A BMI between 18.5 and 24.9 is considered normal, while a BMI below 18.5 indicates underweight, and a BMI above 25 indicates overweight or obesity. Keep in mind that BMI is an estimate of body fat and doesn’t take into account other factors such as muscle mass or body shape, so it may not be accurate for everyone.

To know your bmi use this BMI Calculator online free.