The theoretical weight calculation formula of stainless steel rod

The theoretical weight calculation formula of stainless steel rod:
Weight(kg)=diameter(mm)*diameter(mm)*length(m)*0.00623 Specific gravity of stainless steel: 7.75 tons/M3 for chrome stainless steel 7.93 tons/M3 for chrome-nickel stainless steel 7.87 tons/M3 for iron;
Steel theoretical weight weight (kg) = thickness (mm) × width (mm) × length (mm) × density value.