Concrete Cost Calculator: Estimate your Concrete Project Budget

Use this concrete cost calculator to estimate the total price of ready-mix concrete for a slab, patio, footing, or wall. It's built for homeowners getting quotes and contractors putting together a fast budget number. Enter your pour dimensions and a local price per cubic yard, and it returns the concrete volume and total estimated cost.

How to use this calculator.

1. Enter length and width. Measure the footprint of the slab or area in feet.
2. Enter thickness. Standard slabs run 4 inches; driveways and areas carrying vehicle loads typically use 5-6 inches.
3. Set your price per cubic yard. The default is $150, but call two or three local ready-mix suppliers for a current quote: prices vary by region and PSI strength.
4. Review the estimate. The calculator shows volume in cubic yards and the total estimated material cost instantly.
5. Add a contingency. Build in 5-10% for waste, over-excavation, or a short load fee before finalizing your budget.

How do you calculate concrete costs?

The calculator converts your slab dimensions into cubic yards, then multiplies by your local price per yard.

Volume (cu yd) = (Length × Width × Thickness ÷ 12) ÷ 27

Cost = Volume × Price Per Cubic Yard

Where:

• Length & Width: Slab footprint, in feet.
• Thickness: Slab depth in inches, divided by 12 to convert to feet before the volume calculation.
• Price Per Cubic Yard: Delivered ready-mix price, typically $125-$175/yd³ for standard mixes.

Example calculation.

Scenario: You're pouring a 30 ft × 20 ft patio slab, 4 inches thick, and your local supplier quotes $150 per cubic yard delivered.

1. Convert thickness to feet: 4 in ÷ 12 = 0.333 ft
2. Calculate cubic feet: 30 ft × 20 ft × 0.333 ft = 200 cu ft
3. Convert to cubic yards: 200 ÷ 27 = 7.41 cu yd
4. Calculate cost: 7.41 cu yd × $150 = $1,111

Result: This patio needs about7.41 cubic yards of concrete, costing roughly$1,111 before waste, delivery surcharges, or labor.

Tips from the field.

• Watch for short-load fees. Orders under 5 cubic yards often carry a $50-$100 surcharge per load: it may be cheaper to round your order up than to pay it.
• Material is only part of the bill. Labor, forming, rebar or wire mesh, a gravel base, and finishing typically double the total installed cost beyond the raw material price.
• Higher PSI costs more. Standard 3,000-3,500 PSI mix is cheapest; 4,000+ PSI mixes for driveways or foundations cost $10-$25 more per yard.
• Order 5-10% extra. Uneven subgrade, formwork overage, and spillage consistently eat into your calculated volume.
• Get quotes in writing. Prices swing seasonally and by delivery distance from the batch plant, so lock in a quote before pour day.
• Pump trucks add cost but save labor. If the mixer truck can't reach the pour location directly, a concrete pump adds $500-$1,000+ to the job but saves hours of wheelbarrowing on large or hard-to-access pours.

Keep in mind that this calculator prices the raw material only. A full installed cost also includes site prep (excavation, gravel base compaction), formwork, reinforcement, finishing labor, and any decorative treatments like stamping or exposed aggregate. For a rough installed budget, multiply the material cost estimate by 2.5-4x to account for these additional line items on a typical residential job.

Disclaimer: This calculator provides estimates for planning purposes only. Actual costs vary by region, mix design, delivery fees, and labor. Get written quotes from local concrete suppliers before budgeting a project. PavementCalculator.com assumes no liability for cost overruns.