---
title: "Welding Cost: How to Price Welding Jobs"
description: "A welding cost calculator method that prices the whole job: weld symbols, weld metal weight, arc time, fit-up, grinding, setup and your shop rate, worked out."
url: "https://customiser.ai/blog/how-to-price-welding-jobs"
published: "2026-10-29"
modified: "2026-10-29"
author: "Customiser team"
---

# How to Price Welding Jobs: Welding Cost per Inch, Hour and Joint

Customiser team, 29 October 2026. 12 min read.

## Key takeaways

- Price welding as time on your weld cell at your shop rate, plus consumables, not as wire and gas alone.
- Weld metal for an equal-leg fillet is leg squared divided by two, times length, times 0.284 lb/in³ for steel: a 1/4 in. fillet is about 0.106 lb per foot.
- Arc time is often only a quarter to a third of a welder's time on a part; fit-up, tacking, repositioning, grinding and inspection make up the rest.
- Read weld length, size, type and finish from the weld symbols on the 2D drawing before estimating anything.
- Cost per inch, per joint and per hour are three views of the same build-up; use the one your customer and your work type suit.

Search for a welding cost calculator and you mostly find tools that cost filler metal, shielding gas and arc time. Those numbers are real, but on a typical fabricated assembly they are a small part of what the welding operation costs. The rest is fit-up, tacking, flipping the part, grinding, inspection and setup, and that is where welding quotes lose money.

**To price a welding job, read the weld size, type and length from the drawing, convert them to weld metal weight and arc time, add the non-arc time (fit-up, tacking, handling, grinding, inspection and setup), and multiply total time by your weld cell's shop rate.** Then add consumables per part and any one-time fixture cost. Cost per inch, per joint and per hour all come out of that same build-up.

## What does a welding job actually cost?

A welding job's cost is the welder's total time on the part, at your fully loaded weld cell rate, plus the filler, gas and wear items it uses. The time is the big number. Wire and gas on a small steel bracket might come to a dollar or two; the welder's half hour on it is closer to fifty or sixty dollars at a typical shop rate.

- **Arc time:** the minutes the arc is actually on, set by how much weld metal you deposit and how fast your process deposits it.
- **Non-arc welding time:** repositioning, changing angle, cleaning between passes, chipping slag, changing tips. This is what the operator factor accounts for.
- **Fit-up and tacking:** loading parts into a fixture or squaring them by hand, clamping, checking dimensions and tacking.
- **Grinding and cleanup:** spatter removal, blending starts and stops, and any flush or contoured finish the drawing calls for.
- **Setup and fixturing:** setting the machine, building or loading the fixture, first-article checks. Spread across the batch, plus a one-time fixture charge if it is custom.
- **Inspection:** visual and fillet gauge checks, and the cost of any required NDT or certified inspector.
- **Consumables:** filler wire or rod, shielding gas, contact tips, nozzles, grinding and flap discs.

## How do you read weld length and size from the drawing?

Before you estimate anything, list every weld from the weld symbols on the 2D drawing. The symbol tells you the weld type, size, length and finish; a missing or vague symbol is a question for the customer, not a guess.

- **Weld type:** the triangle is a fillet weld; groove welds (V, bevel, square, J, U) use other shapes and need more weld metal and often edge prep.
- **Arrow side or other side:** a symbol below the reference line is on the arrow side, above is the other side, and on both sides means weld both sides. Both sides doubles the weld length.
- **Size:** the number to the left of the symbol is the fillet leg size, such as 1/4 for a 1/4 in. (6 mm) fillet.
- **Length and pitch:** a number to the right is the weld length. Two numbers such as 2-6 mean intermittent welds 2 in. long at 6 in. centers. Count the increments (roughly joint length divided by pitch, plus one so both ends are welded) and multiply by the increment length. No length means weld the full joint.
- **Weld all around:** a circle where the arrow meets the reference line means weld the whole perimeter of the joint. Measure the perimeter.
- **Field weld:** a flag means the weld is made on site, not in your shop. Exclude it or price it separately.
- **Contour and finish:** a flush or convex contour mark with a letter (G for grind, M for machine) means extra finishing time. A grind-flush callout can take longer than the weld itself.
- **Tail:** notes in the tail may reference a process, a WPS or a code such as AWS D1.1, which affects procedure, inspection and who can do the welding.

Write the welds down as a list: joint, type, size, sides and length. Total the length by weld size. That list drives everything below, and it is what a reviewer will check first.

## How do you calculate weld metal weight for a fillet weld?

The **weld metal weight** is the cross-section area of the weld times its length times the density of the metal. An equal-leg fillet weld has a right-triangle cross-section, so its area is the leg size squared divided by two.

```
Fillet area (in²) = Leg² / 2
Weld metal (lb) = Area x Length (in) x 0.284 lb/in³ (steel)
Filler to buy (lb) = Weld metal / Deposition efficiency
Arc time (hr) = Weld metal / Deposition rate (lb/hr)
```

0.284 lb/in³ is the density of carbon steel (7.85 g/cm³). Real welds are rarely a perfect flat-faced triangle, so many estimators add 10% to 25% for convexity and oversize welding.

*Theoretical weld metal for equal-leg fillet welds in steel, no reinforcement*

| Fillet leg | Area (in²) | lb per inch | lb per foot | kg per meter |
| --- | --- | --- | --- | --- |
| 3/16 in. (4.8 mm) | 0.0176 | 0.0050 | 0.060 | 0.089 |
| 1/4 in. (6.4 mm) | 0.0313 | 0.0089 | 0.106 | 0.158 |
| 5/16 in. (7.9 mm) | 0.0488 | 0.0138 | 0.166 | 0.247 |
| 3/8 in. (9.5 mm) | 0.0703 | 0.0199 | 0.239 | 0.356 |
| 1/2 in. (12.7 mm) | 0.1250 | 0.0355 | 0.425 | 0.633 |

Notice how fast it grows: weld metal goes up with the square of the leg, so a 1/2 in. fillet holds four times the metal of a 1/4 in. fillet and takes roughly four times the arc time. Over-welding a 1/4 in. callout to 5/16 in. adds over 50% to the weld metal.

## What are deposition rate and operator factor?

The **deposition rate** is how many pounds of weld metal a process lays down per hour of arc time. The **operator factor** (or duty cycle) is the share of the welder's welding time that the arc is actually on. Both vary a lot with process, wire size, position and the welder, so use figures from your own shop where you can.

- **Typical deposition rates** (rough ranges, steel): GMAW solid wire about 4 to 10 lb/hr, FCAW about 5 to 15 lb/hr, SMAW about 2 to 5 lb/hr, GTAW often under 2 lb/hr. Vertical and overhead welds run slower than flat and horizontal.
- **Typical deposition efficiency** (weld metal per pound of filler bought): around 90% to 95% for GMAW solid wire, 80% to 90% for flux-cored, and well under 70% for stick electrodes once stubs and slag are counted.
- **Typical operator factors:** 20% to 40% is common for manual welding when the figure includes fit-up and handling. If you estimate fit-up, tacking and grinding as separate steps (as below), use a higher factor of around 40% to 60% for the welding step alone, or you count the same minutes twice.

## Worked example: pricing a welded bracket assembly

These are example figures; use your own. The part is a steel bracket: a 3/8 in. (10 mm) base plate, an 8 in. wide upright and two triangular gussets with 4 in. legs, all A36. The drawing calls for 1/4 in. fillet welds both sides on every joint, GMAW with 0.035 in. ER70S-6 wire and 75/25 argon/CO2. The order is 50 pieces.

### Step 1: weld length from the symbols

- Upright to base: 8 in. x 2 sides = 16 in.
- Gussets: 2 gussets x 2 edges (to base and to upright) x 2 sides x 4 in. = 32 in.
- **Total: 48 in. (1.22 m) of 1/4 in. fillet across 5 joints.**

### Step 2: weld metal, filler and arc time

```
Weld metal = 0.03125 in² x 48 in x 0.284 = 0.43 lb
With 20% oversize allowance = 0.43 x 1.20 = 0.51 lb
Wire to buy = 0.51 / 0.90 efficiency = 0.57 lb
Arc time = 0.51 lb / 5 lb/hr = 0.102 hr = 6.1 min
Welding step = 6.1 min / 0.50 operator factor = 12.2 min
```

As a check, 48 in. in 6.1 minutes of arc time is a travel speed of about 8 in. per minute, which is reasonable for a single-pass 1/4 in. fillet.

### Step 3: total time per part

*Weld cell time per bracket (example figures)*

| Operation | Basis | Minutes per part |
| --- | --- | --- |
| Kit and load parts | 4 pieces from the cut and bent stock | 1.5 |
| Fit-up and tack | Load fixture, clamp, 10 tacks | 6.0 |
| Weld | 6.1 min arc time at 50% operator factor | 12.2 |
| Grind and clean | Spatter, starts and stops (no flush grind) | 4.0 |
| Inspect | Visual and fillet gauge | 1.0 |
| Setup | 45 min per batch / 50 parts | 0.9 |
| **Total** |  | **25.6 min (0.427 hr)** |

### Step 4: price it

*Welding cost per bracket at a $130 per hour weld cell rate (example figures)*

| Cost item | Calculation | Per part |
| --- | --- | --- |
| Weld cell time | 0.427 hr x $130.00 | $55.47 |
| Filler wire | 0.57 lb x $2.00/lb | $1.14 |
| Shielding gas | 35 cfh x 0.102 hr = 3.6 cf, call it 4 cf with pre- and post-flow, x $0.10 | $0.40 |
| Tips, nozzles, discs | Allowance | $0.75 |
| **Welding cost per part** |  | **$57.76** |
| Custom fixture (one-time) | $600, or $12.00 per part over 50 | Quote separately |

> **Calculator answer vs shop answer.** A wire, gas and arc time calculator would price this weld at $1.14 + $0.40 + (0.102 hr x $130) = $14.80. The full build-up is $57.76. Arc time is 6.1 of the 25.6 minutes, under a quarter of the welder's time on the part. Quote the calculator number and you lose about $43 on every bracket.

The $130 per hour weld cell rate comes from our [shop rate worked example](https://customiser.ai/blog/shop-rate-calculator), where wire and gas are left out of the rate so they can be costed per job like this. If your general shop supplies already sit in your overhead, drop the tips and discs line rather than counting it twice.

## Should you price welding per inch, per joint or per hour?

All three come from the same build-up; they just divide it differently. From the example: $57.76 over 48 in. is **$1.20 per inch** ($14.44 per foot), over 5 joints is **$11.55 per joint**, and the underlying rate is **$130 per hour** of weld cell time.

- **Per inch or per foot** works for repeat work with similar weld sizes and part handling, such as long seams on structural or tank work. It breaks down on small parts, where fit-up and handling dominate.
- **Per joint** suits pipe, tube frames and structural connections, where each joint has a similar fit-up, tack and weld routine regardless of length.
- **Per hour** (time and materials) suits repair, prototype and field work, where the time cannot be known in advance. It is the simplest welding rate per hour to explain, but it pushes the risk onto the customer.

Use a per-inch or per-joint figure as a check on a full build-up, not a replacement for it. If a new part's cost per inch is far from your usual range, look for the reason: very short welds, awkward positions, lots of tacks, or a grind-flush finish.

## What makes a welding job cost more?

- **Material:** stainless and aluminum often need TIG, slower travel, back purging and more careful cleanup. Expect several times the time per inch of steel MIG.
- **Position:** vertical and overhead welds run slower and need more skill. If a part cannot be positioned flat, cost it that way.
- **Thickness and joint prep:** thick sections need multiple passes, bevels and sometimes preheat. Groove welds hold much more metal than fillets of the same size.
- **Distortion control:** sequencing, stitch welding, straightening and post-weld machining all add time and are easy to forget.
- **Code and certification:** work to a code such as AWS D1.1 may need a qualified procedure, certified welders, a certified inspector and documented NDT.
- **Finish:** grind flush, cosmetic welds for paint or powder coat, and passivation on stainless are separate operations with their own time.

## How do you keep welding estimates consistent?

Turn the build-up into standards: minutes per tack, fit-up minutes per piece, deposition rate and operator factor by process, grinding minutes per inch by finish, setup per batch. Store them with your weld cell rate and use them on every quote, so two estimators get the same answer for the same drawing. Our guide to [labor standards and rate cards](https://customiser.ai/guides/labour-standards-and-rate-cards) explains how they fit together.

[Customiser](https://customiser.ai/how-it-works) applies this kind of method automatically. It reads the RFQ drawings, routes each part through your own processes, including welding, and costs every operation with the labor standards and rates in your Library, showing cost, sell price and margin per quantity with each figure linked back to the drawing. The estimator still reviews and approves the price before the quote goes out.

Whatever tool you use, the rule is the same: list the welds from the symbols, cost the arc time from the weld metal, then cost everything the welder does that is not arc time. That second half is where the money is.

## Frequently asked questions

### How much do welders charge per hour?

Shop welding rates per hour in the US commonly fall somewhere around $75 to $150, depending on region, process, material and the shop's overhead, with mobile, code and specialty work often higher. The rate should come from your own labor, equipment and overhead costs divided by realistic billable hours. Our shop rate guide shows how to calculate one for a weld cell.

### How do you calculate welding cost per inch?

Build up the full cost of the welding operation for a part (time at your shop rate plus consumables) and divide by the total inches of weld. In the worked example, $57.76 over 48 in. of 1/4 in. fillet is $1.20 per inch. A figure based only on wire, gas and arc time will be far too low.

### How much does a 1/4 inch fillet weld weigh per foot?

A 1/4 in. equal-leg fillet weld in steel has a cross-section of 0.03125 in², which works out to about 0.0089 lb per inch or 0.106 lb per foot (about 0.158 kg per meter). That is the theoretical figure with a flat face. Real welds with some convexity or oversize usually run 10% to 25% heavier.

### What is a good operator factor for welding estimates?

For manual welding, 20% to 40% is common when the operator factor is meant to cover everything the welder does, including fit-up and handling. If you estimate fit-up, tacking and grinding separately, use around 40% to 60% for the welding step alone. Measure your own by timing arc-on versus total time on a few jobs.

### Should fixture costs go into the price per part?

Usually not on a first order. Quote a custom fixture as a one-time charge, or amortize it over a quantity the customer commits to, so the piece price stays accurate for repeat orders. Fixture setup and loading time for each batch belongs in setup time, which is spread across the parts in that batch.

### How do I price a welding job when the drawing has no weld symbols?

Treat it as a question for the customer before you quote. Ask for the weld size, type and which joints are welded, or state your assumptions on the quote, such as 1/4 in. fillet both sides on all joints. Guessing high loses the job and guessing low loses money, so make the assumption visible.

## Related

- [How to calculate your shop rate](https://customiser.ai/blog/shop-rate-calculator): Build a weld cell rate from your own overhead, labor and machine costs.
- [What are labour standards and rate cards?](https://customiser.ai/guides/labour-standards-and-rate-cards): How time standards and work-center rates become a quote price.
- [Sheet metal fabrication quoting](https://customiser.ai/solutions/sheet-metal-fabrication): How Customiser routes and costs cut, bent and welded parts from drawings.