Volume of 1Kg of Fat is 1099.6cm3 based on average fat density of 0.9094g/cm3.
Rendered in Blender v2.91 using Cycles Render.
When losing weight it can be difficult to comprehend that 1Kg of Fat looks as big as that. Picture this as a plate of butter and imagine smearing it all over your body (I know ewww) and think how thin this would be then.