Volume
40 × 60 × (6 ÷ 12)Net volume is 1,200.00 ft³Estimated. With 10% added, the total is 1,320.00 ft³Estimated.
2026 U.S. cost and quantity estimate
40x60 Concrete Slab Cost
In 2026, a 40x60 concrete slab needs about 48.89 cubic yardsEstimated at the page's 6-inch foundation scenario with 10% added and has a modeled national installed cost of $18,360–$36,720Estimated.
Installed estimate uses HomeGuide's $6–$12/sq ft national range, February 3, 2026. Quantity uses the dimensions and allowance shown.
40x60 concrete slab cost calculator
Adjust thickness, allowance, or metro area. All four planning results update in one step and remain in your browser. See all slab sizes & prices for other footprints.
Concrete volume
48.89 yd³
Includes selected allowance Estimated
80 lb concrete bags
2,200 bags
Whole bags, rounded up Estimated
Installed project cost
$18,360–$36,720
United States — national average Estimated
Installed price per sq ft
$7.65–$15.30
Thickness and metro adjusted Estimated
How to use this 40x60 calculator
01
Keep or change the footprint
The page starts at 40 ft by 60 ft. Changing either field recalculates area, volume, bags, and price.
02
Compare thickness
The page opens at 6 inches for its building-foundation budget. Enter 4, 5, 6, or 8 inches to compare volume and price; these are estimating scenarios, not structural specifications.
03
Set the allowance
The default is 10%. This factor is applied after the rectangular slab volume is calculated.
04
Select the metro
The nearest listed metro changes only the modeled labor share. It does not claim a supplier quote.
40x60 slab calculation formula
The calculation moves from volume to cubic yards, then applies the relevant unit price.
Cubic yards and bags
1,320.00 ÷ 27 = 48.89 yd³Bag count divides the same volume by the verified 0.60 ft³ per 80 lb bagVerified, then rounds up.
Price
Quantity × unit price = costMaterial cost uses $120–$160/yd³Verified, HomeGuide, April 3, 2026. Installed cost starts with HomeGuide's $6–$12/sq ftVerified, February 3, 2026.
Installed thickness model. HomeGuide reports that materials make up 50%–60%Verified and labor 40%–50%Verified of slab cost, February 3, 2026. This page uses midpoint shares of 55% material and 45% laborEstimated to model thickness and metro differences.
Concrete slab prices by size
These links keep the 2026 national installed benchmark visible across existing size pages.
| Size page | Area | 4-inch concrete | Installed cost | Data level |
|---|---|---|---|---|
| 10x10 concrete slab cost | 100 sq ft Estimated | 1.36 yd³ Estimated | $600–$1,200 Estimated | National installed baseline Estimated |
| 12x12 concrete slab cost | 144 sq ft Estimated | 1.96 yd³ Estimated | $860–$1,730 Estimated | HomeGuide $6–$12/sq ft, Feb. 3, 2026 |
| 20x20 concrete slab cost | 400 sq ft Estimated | 5.43 yd³ Estimated | $2,400–$4,800 Verified | HomeGuide, Feb. 3, 2026 |
| 20x30 concrete slab cost | 600 sq ft Estimated | 8.15 yd³ Estimated | $3,600–$7,200 Estimated | National installed baseline Estimated |
| 30x30 concrete slab cost | 900 sq ft Estimated | 12.22 yd³ Estimated | $5,400–$10,800 Estimated | National installed baseline Estimated |
| 30x40 concrete slab cost | 1,200 sq ft Estimated | 16.30 yd³ Estimated | $7,200–$14,400 Estimated | National installed baseline Estimated |
| 30x50 concrete slab cost | 1,500 sq ft Estimated | 20.37 yd³ Estimated | $9,000–$18,000 Estimated | HomeGuide $6–$12/sq ft, Feb. 3, 2026 |
| 40x60 concrete slab cost | 2,400 sq ft Estimated | 32.59 yd³ Estimated | $14,400–$28,800 Estimated | HomeGuide $6–$12/sq ft, Feb. 3, 2026 |
| 60x80 concrete slab cost | 4,800 sq ft Estimated | 65.19 yd³ Estimated | $28,800–$57,600 Estimated | HomeGuide $6–$12/sq ft, Feb. 3, 2026 |
40x60 thickness and reinforcement scenarios by use
The page is weighted toward building foundations. These rows are budgeting assumptions only—not structural specifications or construction advice.
| Use | Budgeting thickness | Reinforcement allowance | Concrete-only installed model |
|---|---|---|---|
| Metal building, garage, or workshop foundation | 6 in Estimated | Rebar priced separately | $18,360–$36,720 Estimated |
| Large carport or agricultural building | 5 in Estimated | Project-specific | $16,380–$32,760 Estimated |
| Commercial or warehouse floor | 6 in or more Estimated | Rebar priced separately | $18,360–$36,720 at 6 in Estimated |
Why the page opens at 6 inches: HomeGuide lists 6 inches for a foundationVerified and says foundations typically use steel rebar, dated February 3, 2026. A 40x60 building is 2,400 sq ftEstimated, so both thickness and reinforcement materially change quantity. Final structural requirements remain outside this calculator.
Concrete quantity and material cost by thickness
All rows cover 2,400 sq ftEstimated and include the default 10% allowance.
| Thickness | Cubic yards | 80 lb bags | Approx. weight | Ready-mix material cost |
|---|---|---|---|---|
| 4 in | 32.59 yd³ Estimated | 1,467 Estimated | 123,200 lb / 61.60 tons Estimated | $3,910–$5,210 Estimated |
| 5 in | 40.74 yd³ Estimated | 1,834 Estimated | 154,000 lb / 77.00 tons Estimated | $4,890–$6,520 Estimated |
| 6 in | 48.89 yd³ Estimated | 2,200 Estimated | 184,800 lb / 92.40 tons Estimated | $5,870–$7,820 Estimated |
| 8 in | 65.19 yd³ Estimated | 2,934 Estimated | 246,400 lb / 123.20 tons Estimated | $7,820–$10,430 Estimated |
Installed prices in this table use a single national $6–$12/sq ft baseline and do not change by thickness. See how price shifts by slab depth →
Material estimate: cubic yards × $120–$160/yd³ ready-mixVerified, HomeGuide, April 3, 2026. Weight uses 140 lb/ft³Verified, QUIKRETE technical data revised October 2022. Bag yield is 0.60 ft³Verified per 80 lb bag from the same sheet.
Extra costs on a large 40x60 slab
These sourced units expose common line items without pretending every 2,400-square-foot project has the same layout or access.
Expansion-joint material
$0.50–$2/LF VerifiedMaterial-only range from HomeGuide, April 3, 2026. Total linear feet depend on the quote's joint layout, so this page does not invent a project total.
Phased-pour deliveries
$55–$65/load VerifiedHomeGuide full-load delivery fee, accessed October 4, 2026. Each additional scheduled load adds that published delivery unit; separate mobilization, joint, and crew costs require quote-specific line items.
Concrete pump
$150–$300/hr VerifiedHomeGuide, accessed October 4, 2026, reports a typical 2–4 hour minimumVerified. Pumping can therefore appear separately from the ready-mix and installed-slab totals.
Rebar upgrade
+$1–$4/sq ft VerifiedHomeGuide, April 3, 2026. Across 2,400 sq ftEstimated, the modeled add-on is +$2,400–$9,600Estimated.
Also compare base preparation at $1–$3/sq ftVerified, HomeGuide, February 3, 2026—equivalent to $2,400–$7,200Estimated across this footprint. These add-ons may overlap an installed quote, so they should not be blindly added twice.
40x60 slab cost by metro area
Metro estimates adjust the labor share with BLS May 2025 construction and extraction wages. They do not represent ZIP-code or supplier quotes.
| Metro area | BLS construction wage | Modeled $/sq ft at 6 in | 40x60 installed total | Level |
|---|---|---|---|---|
| Dallas concrete cost | $27.03/hr Verified | $7.27–$14.55 Estimated | $17,450–$34,910 Estimated | BLS May 2025 model |
| Chicago concrete cost | $40.87/hr Verified | $8.46–$16.92 Estimated | $20,310–$40,620 Estimated | BLS May 2025 model |
| Seattle concrete cost | $42.11/hr Verified | $8.57–$17.14 Estimated | $20,560–$41,130 Estimated | BLS May 2025 model |
| Atlanta concrete cost | $28.26/hr Verified | $7.38–$14.76 Estimated | $17,710–$35,420 Estimated | BLS May 2025 model |
Sources: BLS OEWS metro data, May 2025, and HomeGuide's $6–$12/sq ftVerified national range, February 3, 2026.
What is a 40x60 foundation used for?
A 40x60 footprint contains 2,400 sq ftEstimated. Market examples show that this size is commonly positioned as a building footprint, not merely a residential patio.
Multi-bay garage or workshop
2,400 sq ft EstimatedYes, 40x60 is a common garage-and-workshop footprint. Universal Steel calls it its most common 40x60 build and markets it for multi-bay garages and serious workshops; checked October 4, 2026.
Metal-building foundation
$18,360–$36,720 EstimatedThe concrete-only 6-inch scenario is modeled at $18,360–$36,720 installed. HomeGuide's February 3, 2026 national benchmark and the disclosed thickness model form the basis. Rebar, pump, building kit, and engineering remain separate unless quoted.
Carport or farm building
40 × 60 ft EstimatedSteel Structures America lists 40x60 among common footprints for farm-equipment storage and contractor shops; checked October 4, 2026. This page gives a 5-inch budgeting comparison but does not prescribe the structure.
Commercial warehouse floor
6–8 in scenarios EstimatedFor cost comparison, this page includes 6- and 8-inch rows for commercial or storage-facility budgeting. The exact slab and joint design are project-specific; the calculator only quantifies the selected dimensions.
Steel Structures America describes 40x60 as one of the market's popular metal-building sizes for contractor shops, agricultural equipment, auto service, large garages, and small commercial storage; checked October 4, 2026.
DIY material baseline vs. installed price
This 2,400-square-foot slab is treated as a material-only DIY comparison, not as a comparable installed scope. The reviewed sources do not establish a defensible universal square-foot cutoff, so the page reports the measured quantity instead of inventing one.
DIY: ready-mix material only
$5,870–$7,820 EstimatedCalculated as 48.89 yd³Estimated multiplied by HomeGuide's $120–$160/yd³Verified, April 3, 2026. Other materials, equipment, delivery modifiers, and labor are outside this card.
Contractor: installed benchmark
$18,360–$36,720 EstimatedCalculated from the 2,400 sq ftEstimated footprint, HomeGuide's $6–$12/sq ft installedVerified national range dated February 3, 2026, and the disclosed 6-inch thickness model.
Modeled difference: $10,540–$30,850Estimated. This is the gap between ready-mix-only material and the installed benchmark, not a complete DIY budget or promised saving.
What the quantity says: the default scenario represents 48.89 yd³, 2,200 bags, and about 184,800 lbAll estimated. HomeGuide describes full loads as 10 yd³Verified, accessed October 4, 2026, so the volume is approximately 4.89 full truckloadsEstimated. That is the evidence-based scope comparison; the page does not issue a construction recommendation.
40x60 concrete slab cost FAQ
How many cubic yards are needed for a 40x60 concrete slab?
A 40x60 slab at 6 inches needs about 48.89 cubic yards with 10% addedEstimated. The 4-, 5-, and 8-inch scenarios need 32.59, 40.74, and 65.19 yd³Estimated, respectively.
How much does a 40x60 concrete slab cost in 2026?
The page's 6-inch national installed model is $18,360–$36,720 in 2026Estimated. It starts with HomeGuide's $6–$12/sq ftVerified benchmark dated February 3, 2026 and applies the disclosed thickness model to 2,400 sq ftEstimated.
How thick should a 40x60 metal-building foundation be?
This calculator defaults to a 6-inch reinforced-foundation budgeting scenario. HomeGuide lists 6 inches for a foundationVerified and says foundations typically use steel rebar, February 3, 2026. That supports the estimate category, not a project-specific structural specification.
Does a concrete pump cost extra?
It often appears as a separate line item. HomeGuide reports $150–$300 per hourVerified with a typical 2–4 hour minimumVerified; source accessed October 4, 2026. The exact charge depends on the quoted equipment and time.
Can a 40x60 slab be poured in two phases?
Two phases should be priced as separate scheduling and delivery scopes. HomeGuide lists full-load delivery at $55–$65 per loadVerified; source accessed October 4, 2026. The calculator can quantify each phase's volume, but project documents determine joints and structural details.
How do I tell whether a 40x60 quote is reasonable?
Divide the quote total by 2,400 sq ft and compare that rate with the selected metro estimate. Then check whether base preparation, reinforcement, expansion joints, deliveries, pumping, and finishes are included or separate. The result is a price audit, not a ruling on required scope.
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Enter the total and compare it with the calculator's current 40x60 range. The comparison stays in your browser.