There is more than one way to calculate volume. This Instructable will show you how to calculate volume using water.
I selected this empty can because I wanted to know its internal volume.
First, I dried the can out with a towel and made sure that it was clean.
Step 1: Place empty can on scale.
Next , I placed the can on a scale and changed the units to grams.
This can happens to have a mass of 48 grams.