This free welding cost calculator turns five numbers into a full cost for a weld job — labour, consumables and overhead — plus the cost of welding per metre. Enter your total weld length, welding speed, labour rate, consumable cost per metre and overhead percentage, and read the total instantly with every component broken out. No sign-up, results update as you type.
How to calculate welding cost
Welding cost adds three things — labour, consumables and overhead — on top of the arc time the weld actually takes:
Total = (Labour + Consumables) × (1 + Overhead%)
- Arc time =
weld length ÷ welding speed. Welding speed is the real arc-on rate in metres per hour at your true duty cycle. - Labour cost =
arc hours × labour rate. The labour rate bundles welder wages and machine time per hour. - Consumable cost =
weld length × consumable cost per metre, covering electrode or wire plus shielding gas. - Overhead = a percentage on the labour + consumable subtotal for power, equipment, fume extraction and shop costs.
- Cost per metre =
total ÷ weld length— the single rate you can quote and compare jobs on.
Worked example
Suppose a job has 30 metres of weld, runs at a realistic 6 metres per hour, a labour rate of Rs 250/hr, consumables of Rs 40 per metre and 15% overhead:
- Arc time = 30 / 6 = 5 hours
- Labour cost = 5 × Rs 250 = Rs 1,250
- Consumable cost = 30 × Rs 40 = Rs 1,200
- Subtotal = 1,250 + 1,200 = Rs 2,450
- Overhead = 15% of 2,450 = Rs 367.50
- Total = 2,450 × 1.15 = Rs 2,817.50
- Cost per metre = 2,817.50 / 30 ≈ Rs 93.92
Labour and consumables are almost equal here; the fastest lever is welding speed, because every extra metre-per-hour of real arc-on rate cuts labour directly.
What drives welding cost?
Three buckets account for almost all of a weld’s cost, and deposition rate ties them together — a faster, higher-deposition process cuts both arc time and labour for the same weld:
| Driver | What it covers | How to cut it |
|---|---|---|
| Labour | Welder wages and machine time, scaled by arc hours (weld length / speed). Usually the largest share. | Raise the real welding speed and duty cycle; reduce repositioning, slag removal and rework. |
| Consumables | Electrode or filler wire plus shielding gas, per metre of weld. | Right-size the joint, match wire and gas to the process, and avoid over-welding. |
| Overhead | Power, equipment, fume extraction and shop costs, applied as a percentage. | Keep machines loaded, control idle power and amortise equipment over more output. |
| Deposition rate | Kilograms of weld metal laid per hour — the link between weld volume, arc time and labour. | Choose a higher-deposition process or technique so the same weld takes less arc time. |
Estimating welding speed and duty cycle
The single biggest mistake in welding estimates is using the instantaneous travel speed — the rate while the arc is actually burning — as if it ran for the whole shift. In reality a welder rarely lays bead continuously: time goes into setup, electrode and wire changes, repositioning, slag removal, grinding and inspection. The fraction of time the arc is on is the duty cycle, and it is often 30–50% in manual welding.
So when you enter welding speed in this calculator, use the effective arc-on rate at your real duty cycle, not the travel speed at 100% duty. If your travel speed looks fast but the duty cycle is low, the effective metres-per-hour figure — and therefore the labour estimate — should reflect that. An honest, lower welding speed gives an honest, higher cost that you can actually quote against.
From weld estimates to live job costing in OEMup
A calculator answers one weld job. Running a fabrication shop means costing dozens of jobs a week — and the spreadsheet version drifts the moment wire prices move or a job needs rework. Inside OEMup ERP, welding and fabrication jobs are costed live: material issues, consumables and labour hours roll up from the shop floor into a real job cost, overhead is applied automatically, and quotes are built from your true rates. Start free, or try the related Fabrication Cost Calculator to cost a full fabricated part end to end.
Welding Cost Calculator — frequently asked questions
How do you calculate welding cost?
Welding cost = (labour + consumables) × (1 + overhead%). Arc hours = weld length / welding speed; labour = arc hours × labour rate; consumables = weld length × cost per metre. For 30 m at 6 m/hr (5 hrs), Rs 250/hr labour gives Rs 1,250, Rs 40/m consumables give Rs 1,200, subtotal Rs 2,450, +15% overhead = Rs 2,817.50 total (≈ Rs 93.92 per metre).
What is the cost of welding per metre?
Cost per metre is the total welding cost divided by weld length — it rolls labour, consumables and overhead into one quotable rate. In the worked example Rs 2,817.50 over 30 m is about Rs 93.92 per metre. It varies widely with joint size, thickness, position and process, so derive it from your own rates rather than a generic figure.
What factors affect welding cost?
Labour, consumables and overhead. Labour usually dominates, so welding speed, duty cycle, joint prep, position and rework move cost the most. Consumables are electrode or wire plus gas, scaled by deposition rate and weld size. Overhead covers power, equipment and shop costs as a percentage. A higher-deposition process cuts both arc time and labour at once.
How do I estimate welding labour time?
Divide weld length by a realistic welding speed in metres per hour to get arc hours. Use the actual arc-on rate at your real duty cycle — not the travel speed at 100% duty — because setup, electrode changes, repositioning, slag removal and inspection all eat into arc-on time. With a 30–50% duty cycle, the effective welding speed should be well below the instantaneous travel speed.
Need another shop-floor tool? Try our free calculator library or the Fabrication Cost Calculator.
Stop costing welding jobs in spreadsheets
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