Concrete Slab Cost Calculator
Estimate what a concrete slab might cost based on the area, thickness, surface finish, and site conditions. Adjust the inputs to see the range update instantly.
Estimates use US customary units (square feet, cubic yards, inches) and USD.
Estimated project cost
$3,950
Typical. Range $2,200 – $6,550
- Materials
- $1,800
- Labor
- $1,400
- Contingency
- +12%
Main cost drivers
- Pour & finish labor$1,400
- Concrete (ready-mix, delivered)$910
- Gravel / compactable base$320
Illustrative estimate — not verified market pricing
These figures are planning estimates for demonstration, not current verified prices. Actual costs vary by region, materials, and contractor. Always get written quotes. See the methodology and sources below.
Want real numbers for your project? Compare written quotes from local pros.
Request contractor quotesWhat drives concrete slab cost
The two biggest factors are area (more square footage means more concrete, labor, and forming) and finish type. A standard broom or smooth finish adds minimal cost over the base pour, while stamped or polished concrete can more than double the labor charge. Thickness directly determines the volume of concrete ordered in cubic yards — a 6-inch slab requires 50% more material than a 4-inch slab of the same footprint.
Thickness and reinforcement guidelines
Residential patios and walkways are typically 4 inches thick with wire mesh or fiber reinforcement. Garage floors are usually 5–6 inches with rebar or welded wire mesh for added tensile strength. Driveways that bear heavy vehicle loads should be at least 6 inches. Local codes and soil conditions may require more.
Site prep and access considerations
If the area needs grading, excavation, or removal of sod or existing concrete, site prep adds meaningful cost. A compact or tight-access area may also require a concrete pump truck rather than a direct chute pour from the ready-mix truck, which adds a day-rate fee. Larger slabs almost always benefit from a pump.
How to save on a concrete slab project
Choose a broom or smooth finish if appearance is not critical, eliminate decorative treatments, and ensure the site is fully graded before the crew arrives (contractor prep time is billed at trade rates). Getting at least three written quotes from licensed concrete contractors is the most reliable way to benchmark a fair price in your area.
Pricing methodology & assumptions
Estimates multiply quantities derived from your inputs by the illustrative unit costs below, apply a state-level regional factor, then add a 12% contingency allowance. Dataset concrete-slab-cost v2026.1-illustrative · confidence: illustrative · not independently verified.
| Line item | Type | Unit | Low | Typical | High |
|---|---|---|---|---|---|
| Concrete (ready-mix, delivered) | Material | cubic yard | $130 | $165 | $210 |
| Rebar or wire mesh | Material | sq ft | $0.35 | $0.65 | $1.10 |
| Gravel / compactable base | Material | sq ft | $0.40 | $0.80 | $1.40 |
| Form boards & stakes | Material | sq ft | $0.20 | $0.45 | $0.80 |
| Stamped finish — color hardener & release agent | Material | sq ft | $0.80 | $1.40 | $2.50 |
| Concrete sealer / curing compound | Material | sq ft | $0.15 | $0.35 | $0.70 |
| Excavation & grading labor | Labor | sq ft | $1.50 | $3.00 | $5.50 |
| Pour & finish labor | Labor | sq ft | $1.80 | $3.50 | $6.00 |
| Stamped/decorative finish labor surcharge | Labor | sq ft | $4.00 | $8.00 | $14 |
| Building permit | Fee | job | $75 | $300 | $700 |
| Concrete pump truck (for areas not accessible by chute) | Fee | job | $400 | $700 | $1,200 |
What’s excluded
- Structural, mold, asbestos, or code-upgrade surprises found after demolition.
- Design fees, financing costs, and sales tax (varies by state).
- Premium brand upgrades beyond the selected finish level.
Source
Illustrative planning figures compiled by HomeFixHelper for demonstration. Not verified current market pricing — confirm with local contractor quotes.
Frequently asked questions
How much does it cost to pour a concrete slab?
Costs vary widely based on area, thickness, finish type, and whether site prep or a pump truck is needed. A basic broom-finished patio slab costs far less per square foot than a stamped decorative driveway. Use the calculator above to get an illustrative range, then confirm with local concrete contractors.
How do I calculate how many cubic yards of concrete I need?
Multiply the area (sq ft) by the thickness in feet (thickness inches ÷ 12), then divide by 27 to convert cubic feet to cubic yards. Add about 10% for waste and spillage. The calculator does this automatically based on your inputs.
What is the difference between stamped and broom-finished concrete?
A broom finish is the standard textured surface created by dragging a broom across fresh concrete — it is slip-resistant and the most economical option. Stamped concrete uses rubber mats pressed into wet concrete to mimic stone, brick, or wood patterns, and is then colored with hardeners and release agents. Stamped work costs significantly more in both materials and labor.
Do I need a permit to pour a concrete slab?
Most jurisdictions require a permit for slabs attached to a structure, driveways that affect stormwater drainage, or any slab above a certain size. Requirements vary by municipality. Always check with your local building department before starting work.
Are these prices verified?
No. All figures are illustrative planning estimates compiled for demonstration purposes and are not verified current market prices. Treat the result as a starting point and always obtain written quotes from licensed local concrete contractors.