To calculate BMI in pounds, you need to use a slightly different formula than the one used for calculating BMI in kilograms. Here’s how you can do it:

- Multiply your weight in pounds by 0.45 to convert it to kilograms. For example, if you weigh 150 pounds, the calculation would be 150 x 0.45 = 67.5 kg.
- Square your height in inches (e.g., if you are 5’5″ tall, your height in inches would be 65). Then, divide the result by 703. For example, if you are 5’5″ tall, the calculation would be (65 x 65) / 703 = 22.9.
- Finally, divide your weight in kilograms by the result of step 2. For example, if your weight in kilograms is 67.5 and your BMI from step 2 is 22.9, the calculation would be 67.5 / 22.9 = 2.95.

Your BMI is 2.95, which is considered underweight. Keep in mind that BMI is not always an accurate measure of health, as it doesn’t take into account factors such as muscle mass.

To know your bmi use this BMI Calculator online free.