For example, I have a litre of olive oil, but how much does it weight? Basically, it's simple - take the density of oil and multiply it by volume and you will recieve weight.
I came up with an idea to make a calculator on this issue (see below).
First, you have to choose the matter in calculator from this reference book - /337/. The calculator will check its density.
Then you have to set the volume as you like - litres, cubic metres, even length, width and height. Then it will calculate the weight.