Mark a height slightly below the top with a grease pencil or marker. Measure the top surface area of a container you are going to use (length by width). Using this method will give you a relatively accurate estimate of your weight. We can make use of this formula to find your weight from the volume of water displaced. Density is measured as weight over the unit volume of an item, for water, it will be one gram for every cubic centimeter. Our body is made up of 70% water, so our body is about as dense as water.
