How much gravel do I need?

Multiply the area length by width in feet, then multiply by depth in feet, and divide by 27 to get cubic yards. Multiply cubic yards by the material density (typically 1.4 tons per cubic yard for crushed stone) to get tonnage needed.

How many tons of gravel per cubic yard?

Most crushed gravel weighs about 1.4 tons per cubic yard, though this varies by material type. Pea gravel averages 1.3 tons per cubic yard, while dense crushed limestone can reach 1.5 tons per cubic yard.

How deep should gravel be for a driveway?

A gravel driveway should be 4 to 6 inches deep total, typically built in three layers: a 3-inch base of large crushed stone, a 2-inch middle layer of mid-size gravel, and a 1-inch top layer of fine gravel or crusher run.

What type of gravel is best for drainage?

Clean, washed 3/4-inch to 1-1/2-inch crushed stone is best for drainage because the angular shape creates air gaps that allow water to flow freely. Avoid using crusher run or stone dust for drainage, as the fine particles compact and block water flow.

How much gravel do I need for a driveway?

For a standard residential driveway, calculate at 4 inches deep minimum. A 20x40 ft (800 sq ft) driveway at 4" deep needs about 10 cubic yards of gravel, weighing roughly 14 tons. For driveways used by heavy vehicles (trucks, RVs, trailers), increase depth to 6 inches and use a compactable road base underneath the decorative gravel layer.

How is gravel sold — by ton or by cubic yard?

Both — depending on the supplier. Quarries and stone yards typically sell by the ton. Bagged retail (Home Depot, Lowe's) is sold by weight. Bulk delivered gravel may be priced by cubic yard. Always confirm the unit when calling for quotes — a $30/yard price vs $30/ton price is a 40% difference in your actual cost.

Why do I need a compaction factor when ordering gravel?

Compactable materials like road base and crusher run reduce in volume by 10-25% when properly compacted. If you order exactly the calculated volume, you'll be short after compaction. Always order 10-25% extra for compactable materials. Loose decorative materials like pea gravel and river rock compact less (5-10%) but still settle over time.

Do I need landscape fabric under gravel?

For decorative gravel beds and paths — yes, almost always. Fabric prevents weeds from growing through and keeps the gravel from sinking into soil over time. For driveways — usually not needed if you've prepared a proper base. For french drains — yes, fabric wraps the pipe and prevents soil intrusion. A roll covers about 400 sq ft at $60-$80 retail.

What's the difference between gravel, crushed stone, and pea gravel?

Gravel is a general term for small loose rock. Crushed stone is angular (sharper edges) and locks together when compacted — best for driveways and structural bases. Pea gravel is small (3/8"), smooth, and rounded — used decoratively for paths and patios but doesn't compact well for driveways. River rock is larger smooth stones for decorative landscaping. For driveway work: use crushed stone or 3/4" gravel for the base; can use pea gravel as a decorative top dressing.

Gravel & Aggregate Calculator

Calculate gravel, crushed stone, sand, or other aggregate for any project. Includes multi-area support, compaction factor, material costs, delivery, fabric, and edging — with truck load recommendations.

Quick preset (sets depth + material):

Coverage Areas

200 sq ft

Shape

Length (ft)

Width (ft)

Depth (inches)

Material

Standard driveway and base material

Price per Ton ($)

Typical: $30-$80/ton delivered

Add compaction (10% extra)Include landscape fabric (under gravel)Include edging (perimeter)

Delivery Fee ($)

Typical: $75-$200 per delivery within 25 miles

Results

Total Area

200

sq ft

Cubic Yards (Order)

2.72

incl. compaction

Tons

3.80

Gravel (3/4")

Truck Loads

10-ton dump, or 1 tri-axle

Material Shopping List

Gravel (3/4")

3.80 tons$171

Delivery$125

Estimated Total (Materials + Delivery)$296

Pro Tips

Order delivered, not picked up, unless your hauling cost is under $30/yard equivalent. Tri-axle trucks (22 tons) cost the same delivery fee as 10-ton trucks for orders that fill them — much better $/ton math on bigger jobs.
Compaction note: Gravel (3/4") typically settles 10% when properly compacted with a plate compactor or vibratory roller. We've already added this to your order quantity.
For driveways:Lay 2-3" of road base first, compact, then 1.5-2" of decorative gravel on top. Saves money vs. all-gravel installation and produces a more stable driveway.
Get 3 quotes before ordering. Quarry prices vary 30-50% by season and supplier — the same crushed stone can be $35/ton at one yard and $55/ton at the next.

Did this help?

How to Use This Calculator

Choose a use-case preset for smart depth/material defaults, or set them manually. Add multiple area sections if your project has different zones. Toggle compaction if you're using compactable material (road base, crusher run). Enter your supplier's price per ton for an accurate cost estimate including delivery, fabric, and edging.

Formula Used

Area (sq ft) varies by shape. Volume (cu ft) = Area × (Depth / 12). Cubic Yards = Cu Ft / 27. Ordered Yards = Yards × Compaction Factor. Tons = Yards × Material Density. Truck Loads = Tons / 10 (standard) or /22 (tri-axle).

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Disclaimer

This calculator is for estimation purposes only. Results may vary based on local conditions, materials, and building codes. Always consult a licensed professional before making decisions based on these calculations. MyContractorTools is not responsible for any errors or omissions.