By Zencalcy Editorial TeamLast reviewed About us
A concrete driveway is priced by the cubic yard plus finishing labour, reinforcement and base prep. Thickness drives both the concrete and the cost: moving from 4 to 5 inches adds 25% to the volume, which is why truck traffic needs a thicker slab.
Yards, bags, rebar and installed cost for a concrete drive.
V = L × W × T ÷ 27 Cost = V × price + area × finishing rate
A 4-inch slab uses 0.0123 cu yd per square foot; a 5-inch slab uses 0.0154. Add 5–10% for spillage and an uneven subgrade, and include a 4–6 inch compacted base and control joints every 8–10 feet.
| Symbol | Meaning |
|---|---|
| L, W | Driveway dimensions. |
| T | Slab thickness. |
| V | Concrete volume in cubic yards. |
800 sq ft at 4 inches is 9.88 cu yd; with 5% extra, 10.4 yards. At $165 per yard plus $5/sq ft finishing, the installed cost is about $5,711.
Continue with the Asphalt Calculator, Crushed Stone Calculator, Gravel Driveway Calculator, or the Road Base Calculator — or browse more driveways & paving and all construction calculators.
Typically $8–14 per square foot installed, depending on thickness, reinforcement, finish and local concrete prices.
Results use standard construction estimating arithmetic: volumes from measured area and depth, unit weights from published material densities, and code-referenced spans or clearances where the page names a code. Quantities are rounded up to whole saleable units and include the stated waste allowance. These tools are planning aids, not structural design, and do not replace a licensed engineer, a local code check, or a contractor's site measurement.
Reference material used to build and check this calculator:
Last reviewed: September 2026. See how we build and check every tool on the about page.
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Content updated: September 2026