Welding Job Cost and Material Estimation Sheet

What a good one includes

• A comprehensive breakdown of raw stock, including tube, pipe, sheet, and plate dimensions, grades, and total quantities needed for the build.
• A detailed calculation of joint geometries, weld lengths, and total weld volume to determine exactly how much metal needs to be deposited.
• Precise estimates of filler wire or electrode weight, accounting for deposition efficiency, alongside calculated shielding gas consumption in cubic feet.
• A realistic breakdown of shop labor hours split into material prep, fit-up, actual arc-on time, post-weld cleanup, and finishing.
• A dedicated line item for overhead costs, including grinding discs, machine depreciation, shielding gas cup wear, and electricity.
• A built-in allowance percentage for drop cuts, material defects, and practice pieces to ensure unexpected mistakes don't eat your profits.

Common mistakes to avoid

• Many fabricators assume one pound of wire equals one pound of weld metal, forgetting that stick and flux-core processes lose significant weight to slag and spatter.
• Focusing only on arc-on time ignores the hours spent cutting, beveling, tacking, and squaring, which often take up the majority of a fabrication schedule.
• Calculating gas usage based strictly on weld time overlooks the essential pre-flow, post-flow, and idle purging that quietly drains cylinders.
• Relying on last year’s steel prices instead of calling the supplier for a current quote can instantly turn a profitable bid into a financial loss.

Frequently asked questions