Concrete & paving · Free calculator

Concrete Cost Calculator

Price a concrete slab by dimensions and thickness — cubic yards, material cost, labor, and total installed cost for driveways, patios, and pads.

Short answer

Concrete Cost Calculator

$5,500Estimated installed cost

That's $6.88 per sq ft installed — right in the normal $6–$9 national band for a basic broom-finish slab. At this volume you avoid short-load fees.

How it's calculated: 800 sq ft at 4" = 9.9 cubic yards (order 10.0). Adjust the inputs below to recalculate for your own numbers.

Disclaimer: Estimates only — not a quote. Home-services pricing varies widely by region, season, site access, permits, and contractor. Always get 2–3 written local quotes before committing.

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40
20
4

4 in for patios/walkways, 5–6 in for driveways, 6+ for heavy vehicles.

$150
$5.00
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Formula used

Concrete slab cost

Ready-mix is sold by the cubic yard (27 cubic feet). A 4-inch slab needs 1 yard per 81 sq ft; a 6-inch slab needs 1 yard per 54 sq ft. National ready-mix pricing runs $125–$165 per yard in 2026, plus $4–$8 per sq ft for forming, pouring, and finishing labor.

Yards = (L × W × thickness/12) ÷ 27; Total = yards × $/yd + area × labor $/sq ft
Ready-mix per yard
$125–$165
Installed per sq ft
$6–$12
Short-load threshold
4 yd³
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Worked example: a 40×20 two-car driveway at 5 inches

800 sq ft at 5 inches thick is 333 cubic feet — 12.3 cubic yards, so order 12.5. At $155/yd the mud costs $1,938. No short-load fee at this volume. Labor and finishing at $5.50/sq ft adds $4,400, landing near $6,340 total — $7.93 per sq ft, right in the normal driveway band. Quotes of $5,800–$7,200 are competitive; $4,500 means corners are being cut on base prep or thickness.

  • Thickness is the cheapest strength you can buy: going from 4 to 5 inches adds ~25% more concrete cost but roughly doubles load capacity.
  • Base prep (4–6 in of compacted gravel) is where bad contractors save money — ask for it in the quote.
  • Wire mesh or rebar adds $0.50–$1.50/sq ft and is worth it for driveways in freeze-thaw climates.

When the per-yard price is not the real price

Short-load fees (under 4 yards), Saturday delivery, pump trucks for backyard pours ($500–$900), and fiber or admixtures all stack on top of the plant price. For small pours under 1.5 yards, bagged mix can actually beat ready-mix — a yard of bagged concrete is about 45 bags of 80 lb mix at $6–8 each, with no delivery or short-load fee.

FAQ

How much does a yard of concrete cost in 2026?

Ready-mix runs $125–$165 per cubic yard delivered in most US markets, before short-load fees ($150–$250 on orders under 4 yards) and pumping.

How many yards of concrete do I need for a 20×20 slab?

At 4 inches thick: 4.9 yards (order 5). At 6 inches: 7.4 yards (order 7.5).

What does a concrete driveway cost per square foot?

Plain broom-finish concrete installed runs $6–$10 per sq ft nationally; stamped or colored finishes push it to $12–$18.

Is it cheaper to mix concrete yourself?

Only under ~1.5 yards. Above that, ready-mix is cheaper per yard and massively faster — one truck pours in an hour what takes a weekend of bag mixing.

How this calculator is built

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Written by Sam Doshi and the RevenueLab editorial team. We don't sell the data feeds this tool is built on.

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Benchmarks come from public AdSense / Stripe / IRS disclosures and reader-submitted data — never third-party "$X per view" claims. Full methodology.

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Reviewed on a rolling quarterly cycle. Dated reviews are published on the methodology record for each calculator.

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See our editorial policy and disclaimer. Results are estimates, not advice.

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