For certain fitness calculations, such as determining caloric intake or body mass index, it can be helpful to know your body weight in kilograms. Using the concept that 1 kilogram equals 2.2 pounds, it is easy to calculate how much you weigh in kilograms.
Obtain your body weight in pounds from a scale.
Convert the weight in pounds to kilograms by dividing by 2.2. For example, if your weight was 150 pounds, divide by 2.2 to arrive at 68 kilos.
If you need to make a conversion back to pounds from kilograms, multiply the value by 2.2.