Welding Cost Calculator: Cost per Meter and per Job
Welding cost is dominated by labor, not wire. This calculator builds the cost per meter from weld metal weight, deposition efficiency, arc-on deposition rate, operating factor, labor and gas, so you can quote or compare processes with numbers you can defend.
Your numbers
Sum of all weld runs on the job.
Use the weld metal volume calculator to get this for your joint.
Solid wire GMAW is roughly 90-98%, flux cored 80-90%, stick 55-70% after stub loss.
Arc-on deposited metal per hour for your process and parameters.
Share of paid time with the arc on. Manual work is often 25-40%, mechanized 60-90%.
Power, machine depreciation, consumables not listed here, supervision.
Your results
Planning estimate. Excludes joint preparation, fit-up, inspection, rework, preheat energy and travel. Replace the defaults with your shop data.
Cost per meter vs operating factor
Sweeps Operating factor from 15 to 90, holding your other inputs fixed.
Pull welding costs from your ERP
Optional: we can show how routing times and consumable costs in your ERP can feed this estimate automatically.
Optional. The tool and every export work without this. No spam.
How to use the calculator
Start with the weld metal per meter for your joint design. The weld metal volume calculator on this site gives it in kg/m. Enter your filler price, the deposition rate your procedure actually achieves, and an honest operating factor. Then add the loaded labor rate, an overhead percentage and shielding gas flow. The result splits into filler, labor and gas so you can see which line moves the total.
- Use arc-on deposition rate from your WPS parameters, not the catalog maximum
- Operating factor is the biggest lever for manual welding
- Run it twice to compare processes, for example GMAW against FCAW
- Save the PDF or Excel output with the quote
The method behind the numbers
Filler required equals deposited weld metal divided by deposition efficiency, which accounts for spatter, slag and stub loss. Arc time equals deposited weight divided by deposition rate. Paid time equals arc time divided by operating factor, because the welder is also fitting, repositioning, cleaning and waiting. Labor cost multiplies paid time by the loaded rate and overhead. Gas cost is flow in liters per minute times arc minutes, converted to cubic meters.
Reading the result
A typical manual semi-automatic job may show labor at 70 to 85 percent of the total, filler at 10 to 20 percent and gas at a few percent. If labor dominates, raising operating factor through better fixtures, positioners or mechanization pays back faster than shopping for cheaper wire. The chart sweeps operating factor so you can see the curve flatten as it rises.
Common mistakes
Estimators often use the catalog maximum deposition rate, ignore operating factor, or forget that cost per meter depends on joint geometry. A wider groove angle or larger root gap can double the weld metal. Rework and inspection are separate costs and are not included here.
- Using 100 percent operating factor
- Ignoring deposition efficiency of flux cored or stick
- Leaving out joint preparation and grinding
- Mixing imperial and metric units
Frequently Asked Questions
What is a realistic operating factor for welding?
Manual welding commonly runs around 25 to 40 percent arc-on time once fit-up, cleaning, and repositioning are counted. Semi-automatic with good fixtures may reach 40 to 60 percent, and mechanized or robotic cells often exceed 60 percent. Measure your own shop rather than using a book value.
Why is labor so much larger than filler cost?
A kilogram of wire is deposited in well under an hour of arc time but the welder is paid for the whole shift. Since only a fraction of paid time is arc-on, labor cost per kilogram deposited is many times the material cost per kilogram.
Does this include preheat and inspection?
No. Preheat energy, post weld heat treatment, NDT, rework and joint preparation vary widely by code and material. Add them as separate lines to your quote, or use the inspection checklist and preheat tools on this site to scope them.
Can I use it for imperial units?
Convert first. Use meters, kilograms and liters per minute. One foot is 0.3048 m, one pound is 0.4536 kg, and one cubic foot of gas is 28.3 liters. The currency symbol can be treated as any currency since the inputs are your own rates.
If you want weld costs pulled from routings, operation times and consumable costs in your ERP instead of retyped, Netray can build that reporting on top of your system.
Related Tools
Weld Metal Volume and Weight Calculator (V-Groove)
Computes weld metal area, volume and weight per meter and for the full joint from plate thickness, root gap, groove angle and reinforcement.
Supply Chain & InventoryFiller Metal Consumption Calculator (Wire and Electrodes)
Turns weld metal per meter, joint length and deposition efficiency into kilograms of filler to buy and the number of spools or boxes.
Quality & InspectionWPS Template (Welding Procedure Specification)
A fill-in WPS document with joint, base metal, filler, preheat, shielding, electrical parameters and technique, ready to export.
Quality & InspectionWeld Inspection Checklist (Before, During and After Welding)
A four-stage checklist for weld inspection: documents, fit-up, in-process control and final visual and NDT checks.
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