How Much Gravel for a 1-Car Driveway?
Quick Answer
A typical one-car driveway is about 12 by 24 feet (288 square feet). At a 4-inch depth it needs 3.56 cubic yards, or roughly 5 tons of gravel. Deeper 6-inch driveways over soft soil need about 7.5 tons.
- 12×24 driveway (288 sq ft) at 4 in: 3.56 cubic yards / 5.0 tons
- Use 4 inches over firm soil, 6 inches over soft ground
- Crushed stone converts at about 1.4 tons per cubic yard
- Gravel cost: $149–$249 for a typical 4-inch driveway
Formula
Multiply the driveway area by depth in inches, then divide by 324 to get cubic yards. Multiply cubic yards by 1.4 to convert to tons for crushed stone.
Step-by-Step Calculation
- 1
Driveway area
12 × 24 = 288 square feet
- 2
Volume at 4 inches
(288 × 4) ÷ 324 = 3.56 cubic yards
- 3
Convert to tons
3.56 × 1.4 = 5.0 tons
- 4
Cost estimate
5.0 tons × $30–$50 = $149–$249
Gravel for a 1-Car Driveway (12×24, 288 sq ft)
| Depth | Cubic Yards | Tons | Cost* |
|---|---|---|---|
| 3 inches | 2.67 | 3.7 | $112–$187 |
| 4 inches | 3.56 | 5.0 | $149–$249 |
| 6 inches | 5.33 | 7.5 | $224–$373 |
*Crushed stone at $30–$50 per ton delivered. A durable driveway often uses a coarse base layer plus a finer top layer.
Pro Tips
- For a one-car driveway (12×24 ft), use a 3-layer system: 3 inches of #3 stone base, 2 inches of #57 binder, and 2 inches of #8 or crusher run surface. This 7-inch total depth is the minimum for a driveway that handles daily vehicle traffic without rutting.
- Install landscape fabric between the excavated subgrade and the gravel base layer. For a 12×24 driveway, one roll of commercial-grade fabric ($30–$50) prevents the gravel from sinking into soft soil over time.
- Edge the driveway with pressure-treated 4×4 timbers, aluminum edging, or a concrete curb. Without containment, surface gravel migrates onto the lawn and into the gutter over time, requiring annual replenishment.
- Compact each layer with a plate compactor — rent one for $60–$80/day. For a one-car driveway, compaction takes about 45 minutes total across all layers. Skip this step and you will see 2–3 inches of settling within 6 months.
Key Cost Factors
- Materials for a 12×24 one-car driveway at 7-inch depth: approximately 5.2 cubic yards of gravel at various sizes. At $25–$45/yard = $130–$234. Delivery: $50–$100. Landscape fabric: $30–$50. Edging: $60–$150. Total: $270–$534.
- A gravel driveway contractor charges $4–$8 per sq ft ($1,150–$2,300 for 288 sq ft). DIY materials at $270–$534 save $880–$1,770 in labor. The work is straightforward but physically demanding — you are moving and compacting about 7 tons of stone.
Common Mistakes to Avoid
- Using a single stone size. A durable driveway layers coarse base rock under a finer crushed top; all pea gravel shifts and ruts.
- Going too shallow. A one-car gravel driveway needs 4–6 inches of compacted stone; a thin scatter sinks into the soil.
- Skipping compaction. Spreading without compacting in layers leaves a soft, pot-holing surface.
- Forgetting the compaction allowance. Gravel settles ~20%, so order about 20% more loose material than the finished dimensions suggest.
Related Project Considerations
- Crown the surface. A slight center crown or cross-slope sheds water and prevents ruts on a one-car drive.
- Use geotextile over soft soil. Fabric under the gravel stops stone from sinking into clay or mud and greatly extends the drive's life.
- Contain the edges. A timber or paver border keeps gravel from migrating into the lawn.
Frequently Asked Questions
How deep should gravel be for a driveway?
Use at least 4 inches over firm, well-drained soil for a light-use residential driveway. Go to 6 inches (ideally in two compacted layers — a coarse base and finer top) over soft, clay, or poorly draining ground to prevent rutting and potholes. Heavy-use driveways or those carrying trucks should be 8–12 inches deep with a proper three-layer build for long-term stability.
How many tons of gravel for a 1-car driveway?
A typical 12×24 single-car driveway needs about 5 tons at a 4-inch depth, or roughly 7.5 tons at 6 inches. Order about 10% extra to account for compaction loss, uneven subgrade, and edge spreading. If you are building a new driveway on soft soil, add another 2–3 tons of large base stone beneath the surface layer for structural support.
What kind of gravel is best for a driveway?
A crushed stone base such as #57 or 3/4-inch minus compacts well and drains freely, making it the industry standard for driveway surfaces. Many well-built driveways use a three-layer system: large #3 stone at the bottom for drainage, #57 in the middle for structure, and a finer crusher run or #8 stone on top for a smooth driving surface. Avoid pea gravel — it migrates and ruts under tires.