Use our free Metal Weight Calculator to find weight of round bars, sheets, plates, pipes & more in lbs and kgs. Perfect for CNC machining, sheet metal , and custom parts manufacturing. Calculate the exact weight of your metal or plastic order at OnlineMetals.com with our handy weight calculator . Full sizes and custom cut lengths available. Metal Weight Calculator - Round, Square, Rectange, Hexagon, Octagon, Sheet, Plate, Tubular, Ring, Pipe calculators, engineering calculators.... Enter your values: calculators, engineering calculators....