How Much Gravel Do I Need for a Driveway?
Calculate the exact amount of gravel or crushed stone for your driveway. Get results in cubic yards and tons with cost estimates — sized for single-car, double-wide, and long driveways.
Quick Answer
A standard single-car driveway (12×40 ft) at 4 inches deep needs about 5.9 cubic yards of gravel (~8 tons), costing $178–$445 for material. A double-wide (20×40 ft) at 4 inches needs about 9.9 cubic yards (~13.3 tons).
Enter your dimensions above to calculate driveway gravel needed.
💡 1 cubic yard of driveway gravel covers approximately 81 sq ft at 4 inches deep
How to Calculate Driveway Gravel Needed
Formula
Length (ft) × Width (ft) × Depth (in) ÷ 324 = Cubic Yards
Multiply your driveway length by its width to get square footage. Multiply by the gravel depth in inches, then divide by 324 to convert to cubic yards. Multiply cubic yards by 1.35 to get tons.
Example
For a 12 ft × 40 ft driveway with 4 inches of gravel: 12 × 40 × 4 ÷ 324 = 5.93 cubic yards. At 1.35 tons per cubic yard, that's about 8 tons.
Tips & Best Practices
- •Use 4–6 inches total depth for a new driveway — a 3–4 inch compacted base layer plus 2 inches of surface gravel.
- •Order 10% extra to account for settling, spreading loss, and uneven subgrade.
- •Crushed stone (#57 or #3) compacts better than pea gravel and is the preferred choice for driveway bases.
- •Compact the base layer before adding the surface layer — it reduces long-term rutting significantly.
Quick Reference
1 cubic yard of driveway gravel covers approximately 81 sq ft at 4 inches deep
Gravel by Driveway Size
A standard single-car gravel driveway (12×40 ft) at 4 inches deep needs about 5.9 cubic yards — roughly 8 tons of crushed stone.
Use the table below as a quick reference before plugging your exact dimensions into the calculator above. All estimates assume 4 inches of total gravel depth, which is the minimum recommended for a new driveway.
| Driveway Size | Cubic Yards (4" depth) | Tons (approx.) | Est. Material Cost |
|---|---|---|---|
| Single-car (10×20 ft) | 2.47 yd³ | ~3.3 tons | $74–$185 |
| Single-car (12×40 ft) | 5.93 yd³ | ~8 tons | $178–$445 |
| Single-car (12×60 ft) | 8.89 yd³ | ~12 tons | $267–$667 |
| Double-wide (20×40 ft) | 9.88 yd³ | ~13.3 tons | $296–$741 |
| Long drive (12×100 ft) | 14.81 yd³ | ~20 tons | $444–$1,111 |
| Long drive (16×200 ft) | 39.51 yd³ | ~53.3 tons | $1,185–$2,963 |
Costs are for material only, excluding delivery ($50–$150) and installation. Add 10% to your order for waste and settling.
How Deep Should Driveway Gravel Be?
A properly built gravel driveway uses two layers totaling 4–6 inches — a compacted base of larger crushed stone and a finer surface layer on top.
Skipping the two-layer system is the most common driveway gravel mistake. A single layer of pea gravel, no matter how deep, will rut and shift under vehicle traffic. Angular crushed stone that interlocks when compacted is what holds a driveway together.
Base Layer — 3 to 4 inches
Use #3 crushed stone or #57 stone (¾" angular pieces). This layer provides drainage and structural support. Compact with a plate compactor before adding the surface layer. Skipping compaction leads to ruts within one season.
Surface Layer — 2 inches
Use crusher run, #8 stone, or pea gravel. This layer gives a smooth driving surface and fills the gaps in the base. Pea gravel looks nice but requires edging to prevent spreading; crusher run binds tightly and is the most low-maintenance option.
| Total Depth | Best For | Notes |
|---|---|---|
| 2–3 inches | Topdressing existing driveway | Not enough for a new install |
| 4 inches | New residential driveway (light use) | Minimum recommended depth |
| 6 inches | Heavy vehicles, soft subgrade | Best long-term stability |
| 8–12 inches | Rural roads, farm lanes | See our road gravel guide |
Full planning guide: How Much Gravel Do I Need for a Driveway? →
Best Gravel Types for Driveways
Crushed stone #57 is the most popular driveway base material — it's angular, drains well, and compacts into a stable surface.
The right gravel type depends on whether you're building a base layer, a surface layer, or refreshing an existing driveway. Here are the most common options and where each fits:
Crushed Stone #57 — Best Base Layer
¾" angular fragments that lock together under compaction. Excellent drainage and load-bearing. ~1.4 tons/yd³. $35–$65/yd³. The go-to choice for driveway base layers across the U.S.
Crusher Run (Dense-Grade Aggregate) — Best All-in-One
A mix of crushed stone and stone dust that compacts into a near- solid surface. Works as both base and surface in one layer. ~1.45 tons/yd³. $25–$50/yd³. Lowest maintenance option.
Pea Gravel — Best Surface Layer (with edging)
Small, rounded, smooth stones (⅜"). Attractive and comfortable underfoot, but shifts without edging and is not suitable as a base. ~1.35 tons/yd³. $30–$55/yd³.
Crushed Limestone — Budget-Friendly Base
Compacts tightly and is often the most affordable option in the Midwest and South. Slightly more dust than #57. ~1.5 tons/yd³. $30–$55/yd³.
All gravel types can be calculated with the tool above. For paver base gravel specifically, see our paver calculator.
Gravel Driveway Cost Estimates
Gravel driveway materials cost $30–$75 per cubic yard, or roughly $0.50–$1.50 per square foot at 4 inches deep — before delivery and installation.
Total project cost depends on driveway size, gravel type, your region, and whether you're doing it yourself or hiring a contractor. Here's what to expect:
| Cost Item | Typical Range | Notes |
|---|---|---|
| Gravel (bulk) | $30–$75/yd³ | Varies by type and region |
| Delivery | $50–$150 | Per load; many suppliers min. 5–10 yd³ |
| Professional installation | $1–$3/sq ft | Grading, compacting, spreading |
| Edging (optional) | $1–$4/linear ft | Steel, plastic, or timber |
| Geotextile fabric (optional) | $0.10–$0.25/sq ft | Prevents gravel mixing with subgrade |
DIY tip: Renting a plate compactor ($60–$100/day) and spreading gravel yourself typically saves $500–$2,000 on a single-car driveway versus hiring out. The calculator above gives you the exact material quantities to order.
Frequently Asked Questions
How much gravel do I need for a driveway?+
Use the formula: Length (ft) × Width (ft) × Depth (in) ÷ 324 = Cubic Yards. A standard 12×40 ft single-car driveway at 4 inches deep needs 5.93 cubic yards (~8 tons). A 20×40 ft double-wide at 4 inches needs about 9.88 cubic yards (~13.3 tons). Always add 10% for waste and settling.
How deep should gravel be for a driveway?+
A gravel driveway should be 4–6 inches deep total. The standard approach is a 3–4 inch compacted base layer of larger crushed stone (#3 or #57) topped with 2 inches of finer surface gravel (pea gravel or #8 stone).
What type of gravel is best for a driveway?+
Crushed stone #57 or #3 is best for the base layer — the angular edges interlock when compacted, providing a stable foundation. For the surface, pea gravel or crusher run provides a smoother driving experience. Avoid round river rock on the surface as it shifts underfoot.
How much does a gravel driveway cost?+
Gravel costs $30–$75 per cubic yard ($40–$55 is typical for crushed stone). A single-car driveway (12×40 ft) at 4 inches deep uses about 5.9 cubic yards — roughly $178–$445 in materials plus $50–$150 delivery. Professional installation adds $1–$3 per square foot.
How many tons of gravel do I need for a driveway?+
Multiply cubic yards by 1.35 to get tons. A single-car driveway needing 5.93 cubic yards = ~8 tons. Gravel is often sold by the ton for large orders, so knowing both units helps when comparing supplier quotes.