Concrete Patio Cost Calculator
Regional ranges are estimates derived from industry cost patterns — no government database publishes state-level ready-mix prices. Verified sources for research: BLS PPI (national baseline), USGS Cement Summary (PDF), NRMCA. Always get local quotes before ordering.
Ready-mix concrete (standard 4,000 PSI): +0.3% vs last month · index updated May 2026
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Price range reflects national retail pricing at Home Depot, Lowe's, and Menards — verified monthly from published shelf prices. Quikrete and Sakrete 60 lb bags cover 0.45 cu ft; 80 lb bags cover 0.60 cu ft. Includes 5% waste.
Pro tips
Upgrading to 4,000 PSI adds only $8–$12 per cubic yard — roughly $0.15–$0.25 extra per sq ft on a 4-inch slab — but extends crack-free life by 5–10 years in climates with more than 40 freeze-thaw cycl This is critical for outdoor patios in northern climates where frost cycles are frequent.
Concrete contractors in most U.S. markets drop prices 10–20% between late September and mid-November because residential demand craters after Labor Day — a 400 sq ft patio bid at $5,200 in June might come in at $4,200–$4,700 in October, a savings of $500–$1,000. Fall temperatures of 50–70°F are ideal for curing and produce stronger slabs than summer pours where rapid moisture loss causes surface crazing. Complete the pour at least 28 days before your first hard freeze so the slab reaches design strength.
IRC code requires a minimum 2% slope (1/4 inch per foot) away from any building foundation within 10 feet; for a 20-foot-deep patio, the far edge should sit 5 inches lower than the house side. A flat or back-sloped patio causes water to pool against the foundation; fixing it retroactively means mudjacking at $3–$6 per sq ft or full tear-out. If your yard already slopes toward the house, budget an extra $800–$2,500 for grading or a French drain to prevent slab settlement cracks within 3–5 years.
Rebar (#3 on 18-inch centers at $0.50–$0.90/sq ft) handles structural loads and prevents crack separation; synthetic fiber mesh mixed into the concrete ($0.10–$0.15/sq ft) controls plastic shrinkage cracking during the first 24–48 hours when 80% of hairline cracks form. Together they add $0.60–$1.05/sq ft, or $240–$420 on a 400 sq ft patio. Cosmetic crack repair runs $5–$15 per linear foot and a typical slab develops 15–30 feet of cracking over 10 years, so the dual approach costs less than a single repair visit.
Hidden costs
A 12-by-10 patio needs a 4-inch compacted gravel sub-base, and that base is a line item most homeowners leave out of the concrete number entirely. At 120 sq ft and 4 inches deep you spread roughly 1.5 cubic yards of crushed gravel — at BLS PPI PCU212321 pricing of $25–$65/ton delivered and a 1.35-ton-per-yard density, that is $50–$130 in stone plus $0.05–$0.15/sq ft compaction labor (BLS OEWS 47-4099). Skip the base and the slab settles unevenly within 2–3 freeze cycles because it sits on grade with no footing carrying the load. Budget gravel as a non-negotiable 8–12% on top of the concrete cost.
A 120-square-foot, 4-inch patio uses about 1.5 cubic yards of concrete — well under the ready-mix plant's 8–10 yard truck minimum — so a $150–$250 short-load surcharge nearly always applies. At BLS PPI ready-mix pricing of $125–$185/yd³ (PCU327320327320), your 1.5 yards of material is only $190–$280 before that fee, which can equal the material cost itself. Mixing 80-pound bags ($5.50–$8.00 each) needs about 68 bags at $375–$545 total, which can undercut a short-load ready-mix ticket once the surcharge is counted. Above roughly 2 yards the ready-mix truck wins on cost.
A 12-by-10 slab has a 44-foot perimeter, requiring 44 linear feet of 2x4 form lumber plus 16–22 stakes placed every 2–3 feet. At current 2x4 retail of $3–$6 per 8-foot board you need 6 boards plus a stake bundle, landing at $40–$75 for a one-time pour. Curved or multi-level patios push forming costs higher because flexible form material at $1–$3/linear ft cannot be reused, and warped or under-staked forms blow out under wet concrete's hydrostatic pressure before the slab sets.
Every patio over about 10 feet in any direction needs control joints every 8–12 feet (24–36 times the 4-inch slab thickness) to force cracks into straight hidden lines instead of random spider cracks. Cutting them with a rented walk-behind saw runs $50–$90/day, or you tool them in wet for the cost of a $15–$25 jointing tool. Sealing runs $0.15–$0.40/sq ft of penetrating siloxane or acrylic — $18–$48 for 120 sq ft — reapplied every 2–3 years to prevent the surface scaling that destroys unsealed patios in freeze-thaw climates within 5 winters.
Rookie mistakes
Pouring a 4-inch slab directly on uncompacted fill soil guarantees settlement cracks within 1–3 years regardless of how much rebar you add. Proper preparation requires 4–6 inches of compacted gravel placed in 2-inch lifts and plate-compacted to 95% Proctor density, costing $1.50–$3.00/sq ft. Skipping it leads to slab replacement at $10–$15/sq ft within 5 years versus a 25–30 year lifespan with proper prep — photograph the compacted gravel before any concrete is poured.
Control joints must be cut within 6–18 hours of the pour and to a minimum depth of 1/4 the slab thickness — 1 inch on a 4-inch slab. Shallow 1/2-inch cuts fail to create a proper weakened plane, and waiting until day 2 means the slab has already cracked randomly. Repairing random cracking costs $5–$15 per linear foot; a 20×20 patio needs at least 1 joint per direction, spaced 8–12 feet apart.
A verbal $8/sq ft quote tells you almost nothing — a contractor pricing $3,200 for 400 sq ft might include only concrete and labor, while a $5,200 competitor bid covers excavation, gravel base, rebar, expansion joints, and broom finish. Sub-base gravel and compaction alone adds $1.50–$3.00/sq ft and demolition of existing material adds $2–$4/sq ft, swinging the total by $1,400–$2,800 on a 400 sq ft slab. The average homeowner who accepts a verbal quote pays $800–$2,000 in unexpected add-on charges.
Example project costs
4" Patio
12×10 ft (120 sq ft)
| Ready-mix concrete (2 yd³) | $250–$370 |
| Pour + finish labor (120 sq ft) | $720–$1,440 |
| Total | $970–$1,810 |
4" Driveway
20×14 ft (280 sq ft)
| Ready-mix concrete (4 yd³) | $500–$740 |
| Pour + finish labor (280 sq ft) | $1,680–$3,360 |
| Total | $2,180–$4,100 |
6" Structural
20×20 ft (400 sq ft)
| Ready-mix concrete (8 yd³) | $1,000–$1,480 |
| Pour + finish labor (400 sq ft) | $2,400–$4,800 |
| Total | $3,400–$6,280 |
What NOT to build with concrete patio
Don't use concrete patio for: Hot tub or spa pad over 2,000 lbs loaded weight
A filled hot tub concentrates 3,000–5,000 lbs on 25–35 sq ft, requiring a minimum 6-inch slab with #4 rebar on 12-inch centers on an engineered footer — a different structural project costing $18–$25/sq ft, not a patio calculator estimate.
Don't use concrete patio for: Sloped hillside site requiring retaining walls
More than a 12-inch grade change across the slab footprint requires a retaining wall ($20–$45 per linear foot) or a stepped slab design, both needing site-specific engineering; a flat-slab cost calculator will underestimate by $2,000–$8,000 because cut-and-fill earthwork, drainage, and structural walls are separate line items.
Don't use concrete patio for: Patio over existing tree root zones
Trees within 15 feet of the slab edge generate 300+ PSI of upward root pressure that cracks and heaves 4-inch slabs within 3–7 years. Root barrier installation ($3–$8 per linear foot) or tree removal ($500–$2,500) must be scoped separately — no standard patio calculator accounts for this cost.
Concrete Patio cost by type
Per-yd³ price by mix strength for concrete patio. The calculator above defaults to 4,000 PSI (driveways, footings); switch the selector to price any grade against your own dimensions.
| Mix strength | Price per yd³ |
|---|---|
| 3,000 PSI (residential slabs, patios) | $110–$130 |
| 4,000 PSI (driveways, footings) | $125–$145 |
| 5,000 PSI (high-strength) | $140–$165 |
| 6,000+ PSI (structural/industrial) | $155–$185 |
Tools a Patio Pour Actually Needs
Skill Level and the Finish Trap
Realistic Time for 120 Square Feet
When DIY Saves and When It Doesn't
Concrete Strength and Mix Standard
Slab Thickness and Coverage Yield
Temperature and Curing Limits
Regional Cost and Soil Drivers
How this is calculated
Formula: L × W × (D ÷ 12) = cu ft ÷ 27 = yd³ × 1.05 over-order × $/yd³ by PSI grade (BLS PPI-indexed)
| Input | Value | Unit |
|---|---|---|
| Length | 12 | ft |
| Width | 10 | ft |
| Depth | 4 | in |
| Mix strength | 2 |
Related Calculators
Concrete Cost Calculator — price bulk concrete at $125–$185/yd³ alongside your concrete patio project.
→ Concrete Cost CalculatorConcrete Curing Time CalculatorBefore ordering for concrete patio — check the 7-day and 28-day concrete curing timeline to get timing and mix right.
→ Concrete Curing Time CalculatorConcrete Mix Design GuideConcrete patio needs the right spec — Concrete Mix Design Guide covers 3,000–4,000 PSI mixes and air-entrainment reference data.
→ Concrete Mix Design GuideFrequently Asked Questions
How much concrete does a 12x10 patio need?
1.5 cubic yards for a 12-by-10 patio at 4 inches thick: 120 sq ft × 0.333 ft depth = 40 cubic feet ÷ 27 = 1.48 yards, rounded up to 1.5. At BLS PPI ready-mix pricing of $125–$185/yd³, that is $190–$280 in material before the short-load surcharge. Order 5–10% extra because the gravel base is never perfectly level and low spots eat additional concrete.
Is a 4-inch patio thick enough?
Yes, 4 inches is the standard for a residential patio carrying foot traffic and furniture; go to 6 inches only for a vehicle, hot tub, or expansive clay soil. Thickening to 6 inches adds 50% to concrete volume and cost for load capacity a patio rarely needs. Wire mesh or fiber reinforcement in a 4-inch slab meets typical residential code requirements at $0.20–$0.50/sq ft added cost.
What is the cost per square foot to pour a patio?
$6–$15 per sq ft installed for a plain broom-finish patio in 2026: roughly $1.60–$2.30/sq ft in concrete material (BLS PPI PCU32732) plus $8.50/sq ft labor for pour and finish (BLS OEWS 47-2051), plus base and forms. Stamped or stained finishes push to $12–$20/sq ft, and per-foot cost drops as the patio grows because short-load surcharges and mobilization spread over more area.
Do I need rebar in a concrete patio?
No — 6x6 welded wire mesh or fibermesh is the standard reinforcement for a 4-inch on-grade patio; rebar (#3 or #4) belongs in a 6-inch slab carrying vehicles or hot-tub loads. Wire mesh runs about $0.20/sq ft while a rebar grid with chairs runs $0.50–$0.80/sq ft, so for a patio holding furniture and people, mesh prevents cracks from separating without the cost of structural steel.
How long before I can use a new concrete patio?
Walk on it after 24–48 hours, place furniture after 7 days, and expect full 28-day cure for design strength per ACI 308. Keep the patio damp under plastic or with periodic misting during the first 7 days so the surface does not dry faster than the core. Below 50°F the cure slows, reducing 7-day strength by 40–60%, so every window extends in cold weather.
Why does my patio cost more per yard than a driveway?
A 12-by-10 patio at 1.5 yards falls far under the ready-mix plant's 8–10 yard truck minimum, triggering a $150–$250 short-load surcharge; spread over only 1.5 yards, that surcharge can nearly double the effective per-yard cost. A driveway ordering 3–4+ yards avoids the fee entirely, so the same $155/yd³ base price lands cheaper per yard on the larger pour. The short-load fee is the entire explanation — concrete at both sites comes from the same plant at the same $155/yd³ base price, with zero markup difference.
Sources
- BLS PPI — Ready-Mix Concrete Manufacturing — verified 2026-06-07, updates monthly
- BLS OEWS — Cement Masons & Concrete Finishers (47-2051) — verified 2026-06-07, updates annual