Introduction
A conduit run has three cost buckets: the raceway itself (conduit, fittings, supports), the conductors inside it, and the labor to install and pull them. Conduit size sits upstream of all three — the trade size you calculate determines which fittings you buy, how hard the pull is, and how much copper you need. Getting the size right first means the estimate that follows it is right too.
The Conduit Size Calculator gives you the minimum compliant trade size from your conductor list. This guide turns that size into a budget: what drives the cost of each component, example per-foot pricing, a full worked estimate in metric and imperial, and where the savings actually are (and where cutting corners costs you the inspection).
Try the Conduit Size Calculator: enter your numbers below — the result updates live.
Formula:Fill table by AWG × count
What Drives Conduit Run Cost
Five variables explain most of the price difference between two conduit estimates:
Conduit type and trade size
Rigid metal conduit costs multiples of EMT; PVC Schedule 80 costs more than Schedule 40; and every step up in trade size raises the per-foot price. But material is usually the smaller half of the total — labor dominates on most installed runs.
Conductor count, size, and insulation
Copper is the single most expensive material in most runs. Larger AWG (smaller gauge numbers) and thicker insulations like XHHW cost more per foot than THHN — and, as the material guide explains, they also occupy more area, which can push the conduit size up.
Run length and bend count
More feet means more conduit and more wire — wire is bought by the conductor, so four conductors in a 100 ft run is 400 ft of wire. Bends add elbows, conduit bodies, and pulling labor; a bend-heavy run can double labor time versus a straight one.
Fittings, boxes, and supports
Connectors, couplings, straps, conduit bodies, junction boxes, and bushings add up fast — typically 15–30% of the material cost on a residential run. Larger trade sizes mean pricier fittings at every point.
Labor and permits
Electrician rates vary widely by region. Permits and inspections add a fixed cost that hurts small jobs disproportionately — a short run’s permit can exceed its material cost.
Example Per-Foot Pricing
Prices move with copper markets and region, so treat these as illustrative planning figures, not quotes — verify against your supplier before bidding:
| Item | Illustrative price |
|---|---|
| 1″ EMT conduit | $1.30 – $1.70 / ft ($4.27 – $5.58 / m) |
| 3/4″ EMT conduit | $0.90 – $1.30 / ft ($2.95 – $4.27 / m) |
| 1″ PVC Schedule 40 | $0.80 – $1.20 / ft ($2.62 – $3.94 / m) |
| 10 AWG THHN copper | $0.25 – $0.40 / ft per conductor |
| 12 AWG THHN copper | $0.15 – $0.30 / ft per conductor |
| EMT connectors / couplings (1″) | $1.50 – $3.00 each |
| Licensed electrician labor | $75 – $125 / hour (regional) |
Worked Estimate: 80 ft Run, Four 10 AWG Conductors
Here’s a full budget build: three 10 AWG THWN current-carrying conductors plus one 10 AWG ground, in EMT, 80 ft (24.38 m) with two 90° bends.
Step 1 — Size the conduit. Four conductors → 40% fill. 10 AWG THWN ≈ 16.77 mm² each; 4 × 16.77 = 67.08 mm². 3/4″ EMT allows 0.40 × 137 = 54.80 mm² — fails. 1″ EMT allows 0.40 × 222 = 88.80 mm² — passes. Trade size: 1″ EMT (30.2% fill).
Step 2 — Conduit material. 80 ft × $1.50/ft = $120. (Imperial cross-check of the fill: 16.77 mm² = 0.0260 in² each; 4 × 0.0260 = 0.1040 in²; 1″ EMT internal 0.346 in² × 0.40 = 0.1384 in² ≥ 0.1040 — passes at 30.1% fill.)
Step 3 — Conductors. Four conductors × 80 ft = 320 ft of 10 AWG THWN × $0.32/ft = $102.40.
Step 4 — Fittings and supports. Two elbows, four couplings, two connectors, straps every 10 ft (8 straps), two boxes: ≈ $55.
Step 5 — Labor. Mount conduit, pull four conductors through two 90° bends, terminate: ≈ 4 hours × $90/hr = $360.
Step 6 — Total. $120 + $102.40 + $55 + $360 = ≈ $637, or about $7.96/ft ($26.13/m).
Practical takeaway: labor is 57% of this estimate. The cheapest legitimate way to cut cost is an easier pull — straighter routing and correct sizing beat cheaper materials every time. For a systematic takeoff process, see the estimating guide.
Where the Savings Actually Are
- Route straighter. Every avoided bend saves an elbow, a potential conduit body, and pulling labor — often $30–$80 per bend all-in.
- Size correctly, not minimally. A conduit at 39% fill with three 90° bends pulls brutally; one trade size up costs a few dollars in material and can save an hour of labor.
- Buy wire in bulk spools. 500-ft spools beat 100-ft coils per foot by 15–30% on common sizes.
- Combine circuits thoughtfully. Sharing one larger conduit for multiple circuits saves raceway — but watch the derating math: 7–9 current-carrying conductors derate to 70%, which can force larger (pricier) wire.
- Pick the right conduit type for the location. EMT indoors where allowed beats rigid on both material and labor; PVC underground beats both. The wrong type for the environment fails inspection and gets re-done at full price.
What not to do: undersize the conduit to save $20 on a run, skip the grounding conductor, or exceed the 360° bend limit to avoid buying a pull box. Each of these fails inspection, and a re-pull costs more than the original install. More on inspection pitfalls in the code compliance guide.
Mistakes That Inflate (or Wreck) the Budget
- Estimating wire by the run, not by the conductor. Four conductors in an 80 ft run is 320 ft of wire — the most common takeoff error.
- Pricing conduit by trade size label. Fittings, boxes, and supports all scale with the actual trade size; a takeoff sized from the wrong table is wrong everywhere downstream.
- Forgetting fittings and supports. Couplings, connectors, straps, and boxes routinely add 15–30% to material cost.
- Ignoring derating in the wire budget. Nine current-carrying conductors at 70% ampacity can push 12 AWG up to 10 AWG — a ~50% wire cost increase you didn’t estimate.
- Underestimating pull labor on bend-heavy runs. A straight 80 ft run and an 80 ft run with four elbows are different jobs; bid them differently.
- Using today’s copper price in next quarter’s bid. Copper moves. Date your wire pricing and re-check before purchasing.
Related Guides
- Estimating Guide — the full takeoff process, step by step.
- Complete Guide — conduit fill fundamentals and the NEC tables.
- Conduit Material Guide — which type to price for your environment.
- Pro Tips — trade techniques that cut labor hours.
- Conduit Size Calculator FAQ — quick answers to common questions.
Frequently Asked Questions
How much does it cost to run conduit per foot?
Installed cost typically lands in the $6–$12/ft range for common residential EMT runs, with labor as the largest share. Material-only cost for 1″ EMT with four 10 AWG conductors runs roughly $3–$4/ft. Regional labor rates and copper prices move these figures significantly.
Is it cheaper to use PVC or EMT?
PVC conduit material is usually cheaper per foot than EMT, and PVC fittings are inexpensive. But PVC needs more supports, expansion fittings on long runs, and can’t serve as the equipment ground — EMT’s labor advantages indoors often win on total installed cost.
Does a bigger conduit cost much more?
One trade size up typically adds 20–40% to conduit and fitting material cost — small in absolute dollars on short runs — while making the pull meaningfully easier. On bend-heavy runs, upsizing often pays for itself in labor.
How do I estimate wire cost for a conduit run?
Multiply the run length by the number of conductors (including ground), then by the per-foot price of the wire size and insulation. Four conductors in an 80 ft run = 320 ft of wire. Add 10% for terminations and waste.
Does derating affect my budget?
Yes — it can force larger wire. Nine current-carrying 12 AWG THHN conductors derate to 70% of their 30A table ampacity (21A), which may be inadequate for 20A circuits, pushing you to 10 AWG. Always budget wire after the derating check.
Should I include a permit in the estimate?
Yes. Permits are typically a fixed fee that can exceed material cost on small jobs. Electrical work is regulated in most jurisdictions — include the permit and plan for inspection in every estimate.
Get Your Number
Cost estimating starts where sizing ends: run the conductor list through the Conduit Size Calculator to lock in the trade size, then build the budget conductor-by-conductor — wire by the foot per conductor, fittings and supports from the actual size, labor from the route’s difficulty, and a dated copper price. The formula is simple; the discipline is in counting every conductor and every fitting.
Disclaimer: Prices in this guide are illustrative planning figures, not quotes — copper prices and labor rates vary by region and time. Calculator results are planning estimates based on your inputs and general NEC Chapter 9 fill tables. Electrical work is regulated; verify requirements with your local authority having jurisdiction (AHJ) and have the work performed by a licensed electrician.
