The application is an interactive metal calculator that calculates mass by quantity and quantity by weight of metal. The metal calculator also calculates the cost of the rolled metal. Calculation of the workpiece width (sweep length) when bending the bent profile. And also search and delivery of the necessary metal rolling, in the necessary quantity. Includes all items of assortment, DSTU, photographs: reinforcement, circle, square, sheet, tin, strip, beam, Larsen tongue, corner, channel, wire rod, wire, pipes, hexagon steel and stainless. Features: offline work (without internet connection), ease of use, prompt response.