Concrete for a 12×12 ft driveway
A 12 × 12 ft driveway at 6 in deep needs 2.67 cubic yards of concrete — about 120 × 80 lb bags, roughly 5.40 tons and $440.00 of material. Fine-tune below.
Full breakdown
| Item | Value |
|---|---|
| Volume before waste | 72.0 ft³ |
| Volume with 5% waste | 75.6 ft³ |
| Cubic yards | 2.80 |
| Cubic metres | 2.14 |
| Cubic feet | 75.6 |
| Weight | 5.67 tons (11,340 lb) |
| Full dump-truck loads | 1 × 10 yd³ truck |
| 80 lb bags | 127 bags · $869.95 |
| 60 lb bags | 169 bags · $921.05 |
| Sq ft covered at 1 in deep | 907 |
| Sq ft covered at 3 in deep | 302 |
- Formula: length × width × depth, with depth converted from inches to feet (÷ 12), then × (1 + waste%).
- Concrete: Concrete is ordered by the cubic yard from a ready-mix plant, or mixed from 60 lb and 80 lb bags for small pours.
- Ready-mix plants almost always have a minimum charge — often 1 cubic yard — plus a short-load fee below about 3 yards, so a 0.5-yard pour can cost nearly as much as a 3-yard one.
- Prices are national averages for planning, not quotes. Confirm with a local supplier — delivery, short-load fees and tax are extra.
Working out 144 square feet at a 6 in depth gives 72.0 ft³ — 2.67 cubic yards of concrete, weighing roughly 5.40 tons.
The calculator above is pre-filled with these dimensions — change any field to see the numbers update. Concrete is ordered by the cubic yard from a ready-mix plant, or mixed from 60 lb and 80 lb bags for small pours.
Frequently asked questions
How many cubic yards of concrete for a 12×12 ft driveway?
About 2.67 cubic yards at 6 in deep, which is 72.0 cubic feet or 5.40 tons. Add 5% waste if the ground is uneven.
How many bags is that?
120 × 80 lb bags, or 160 × 60 lb bags. Bagged is only worth it at this size if you cannot take a truck delivery.
What depth should a driveway be?
6 in is the standard for concrete in this application. Ready-mix plants almost always have a minimum charge — often 1 cubic yard — plus a short-load fee below about 3 yards, so a 0.5-yard pour can cost nearly as much as a 3-yard one.