How do you calculate concrete for a driveway?
Measure length × width × 5–6 inches of thickness, convert to yards (÷ 27), and add 10%. A 40×12 ft single driveway at 6 inches: 40 × 12 × 0.5 ÷ 27 = 8.9 yards — order 10. At $150–190 per yard plus labor, that's roughly $4,300–6,500 installed.
Common driveway sizes (6 in thick, with 10% waste)
| Driveway | Dimensions | Order quantity |
|---|---|---|
| Single car | 40 × 12 ft | 9.8 yd³ |
| Double car | 40 × 20 ft | 16.3 yd³ |
| Double + turnaround | 50 × 24 ft | 24.4 yd³ |
| Circular (approx.) | 1,200 ft² | 24.4 yd³ |
How to read this table
- Circular (approx.) sits at the top of the table (1,200 ft²) — 24.4 yd³. If your situation looks like this row, plan against the upper half of the range rather than the midpoint.
- Single car anchors the bottom (40 × 12 ft) — 9.8 yd³. Treat this as the conservative case you should still be profitable at.
- The gap between the top and bottom row is roughly 30×. That spread is why a single blended average is close to useless here — pick the row that matches your setup instead of averaging the column.
- With 4 reference points in the "common driveway sizes (6 in thick, with 10% waste)" table, the fastest way to use this page is to find the closest row, take its dimensions, then stress-test it ±30% before you build a plan on it.
Context
Driveways are where the ready-mix decision is made for you: anything over 2 yards is truck territory, and a full driveway pour should be placed continuously to avoid cold joints. Budget beyond the concrete itself: excavation and gravel base ($1.50–3.00/ft²), forms, reinforcement, and finishing labor typically double the material cost. In freeze-thaw climates, specify air-entrained 4,000-psi mix — it's a small upcharge that prevents surface scaling.
What moves this number
Regional pricing
Ready-mix, bag, and labor prices vary 30–50% between US metros. Sun Belt markets with many plants run well below Northeast and remote-area pricing.
Waste and site conditions
Uneven subgrade, spillage, and form bowing consume 5–15% extra material. Orders placed at exact volume routinely come up short mid-pour.
Local code requirements
Frost depth, footing dimensions, and reinforcement rules are set by county. The same project can require twice the concrete in a northern climate versus a southern one.
Methodology
Volume math per the cubic-yards formula at 6-inch thickness. Installed cost range ($9–13/ft²) reflects 2026 US national averages for a broom-finish residential driveway including base prep and labor; decorative finishes run higher.
Assumptions and caveats
- Volumes are theoretical; order quantities include a waste allowance but site conditions vary.
- Prices reflect 2026 US national ranges — get local quotes before budgeting a real pour.
- Structural dimensions and frost depths are governed by local building code; verify with your building department.
- This page was last reviewed on 2026-10-01. Ranges are updated as new data lands, so re-check before using them in a contract or a plan.
- Use these numbers as a starting range, not a guarantee — your own historical data always beats a benchmark.
Frequently asked questions
How do you calculate concrete for a driveway?
Measure length × width × 5–6 inches of thickness, convert to yards (÷ 27), and add 10%. A 40×12 ft single driveway at 6 inches: 40 × 12 × 0.5 ÷ 27 = 8.9 yards — order 10. At $150–190 per yard plus labor, that's roughly $4,300–6,500 installed.
Which option pays the most in the common driveway sizes (6 in thick, with 10% waste) table?
Circular (approx.), at 1,200 ft² (24.4 yd³). That row represents the strongest case in this dataset, so use it as an upper bound rather than an expectation.
What is a realistic low-end figure?
Single car at 40 × 12 ft (9.8 yd³). Plan your costs so the low end still works, then treat anything above it as upside.
Why do the numbers vary so much?
The spread between the highest and lowest row is about 30×. Regional pricing and waste and site conditions explain most of that gap — see the drivers section above for the full list.
Where do these numbers come from?
Volume math per the cubic-yards formula at 6-inch thickness. Installed cost range ($9–13/ft²) reflects 2026 US national averages for a broom-finish residential driveway including base prep and labor; decorative finishes run higher.
How can I estimate my own number instead of using a benchmark?
Use the Concrete Cost Calculator on RevenueLab — it takes your own inputs and returns a figure specific to your setup, which is always more accurate than a published range.
Model your own numbers
Related reading
More answers in this category
- How do you calculate cubic yards of concrete?
- How many bags of concrete make a cubic yard?
- How do you calculate concrete for a slab?
- How do you calculate concrete for footings?
Looking for a calculator?
Search every free tool on RevenueLab — or describe your problem and Rex will pick one.
Last updated 2026-10-01.