Free Engineering Tools
Practical calculators for metal processing — material weight, stamping force, bending and deep drawing. Built by our engineers for engineers, procurement teams and hobbyists. No sign-up, works on any device.
Calculate the gross weight of steel, aluminum, stainless steel, copper, brass and other metals for plates, sheets, round/square bars and tubes. Enter dimensions and quantity to get total weight, weight per meter and per foot.
Open Calculator →Estimate the press tonnage required for blanking, piercing and stamping operations from material thickness, shear strength and cut length.
Coming SoonCompute the flat pattern length of bent sheet metal parts using bend allowance, bend deduction and K-factor for air bending and bottoming.
Coming SoonCalculate the developed length of round and rectangular tube after bending with centerline radius and bend angle inputs.
Coming SoonEstimate drawing force, blank diameter and number of draws for cylindrical deep drawn parts from cup diameter, height and material properties.
Coming SoonPredict springback angle and required over-bend angle for sheet metal bending based on material, thickness and bend radius.
Coming SoonEvery calculator on this page mirrors the formulas we use every day in our own workshop in Zhuji, China — from deep drawing progressive dies to precision bending. We share them so you can check a quote, size a press, or order the right material stock in under a minute.
Yes — every calculator on this page is free, with no sign-up, no email required and no usage limits. We keep them as a practical resource for engineers and buyers working with metal parts.
Gross weight is the weight of the raw material before machining or fabrication — the stock you actually order and cut. Net weight subtracts holes, cutouts and machined features. For quoting and shipping, always start from the gross weight and add a small scrap allowance.
Every dimension input accepts mm, cm, m and inches, and results are shown in both kilograms and pounds. Just pick the unit next to each field and the calculator converts everything for you.
They are an excellent first estimate. For a final production quote, send your drawing to Balford at shawn@balford.net — our engineers will confirm material, tolerances and price within 24 hours.