Weight of a person depends on many factors like gender, height etc. An average person weighs around 180 to 190 pounds. But the better way of knowing if your weight is ideal for your height is to calculate body mass index (BMI). BMI is ameasurement that tell if your weight is appropriate for your height. It is calculated by this formula: weight in kilograms divided by square of height in meters. If the result of this calculation is between 18.5 to 24.5 then your body mass index is normal and your weight is appropriate for your height.