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Stone & Gravel Calculator

Calculate tons, cubic yards, truck loads, and cost for crushed stone, gravel, pea gravel, river rock, and rip rap.

#57 Stone Needed (with 10% waste)

3.80 tons

2.72 cubic yards

Volume (net)66.67 ft³
Cubic yards (net)2.47 CY
With 10% waste2.72 CY
Weight3.80 tons
Coverage at 4" depth220 sq ft
Truck loads (10 CY)1 loads
Truck loads (14 CY)1 loads
Estimated Cost$171
info

Danny Reeves:#57 stone is the workhorse — use it for driveways, drainage, and base. #89 pea gravel is for French drains and between pavers. If someone asks for "gravel" without specifying, they usually mean #57.

Methodology

Volume = length × width × (depth in inches ÷ 12). Cubic yards = cubic feet ÷ 27. Tons = cubic yards × density (tons per cubic yard). Stone densities vary by type: #57 stone 1.4 t/CY, #67 stone 1.35 t/CY, pea gravel 1.4 t/CY, crushed stone 1.45 t/CY, river rock 1.3 t/CY, rip rap 1.5 t/CY. Coverage = volume (ft³) ÷ depth (ft) to get square feet at the specified depth. Default costs reflect 2026 national bulk delivery averages. Always add 5–10% for waste and spreading loss.

Frequently Asked Questions

What size stone should I use for a driveway?
For most residential driveways, use #57 stone (3/4" to 1") as the top layer — it locks together well under traffic and drains properly. For the base layer, use larger #3 or #4 stone (1.5" to 3") at 4–6 inches deep. A three-layer approach works best: large stone base, #57 middle layer, and optional #89 or stone dust top for a smoother surface. Total depth should be 8–12 inches depending on soil conditions.
What is the difference between #57 and #67 stone?
#57 stone ranges from 3/4" to 1" in diameter and is the most commonly used aggregate in construction. #67 stone is slightly smaller, ranging from 1/2" to 3/4". Both work for driveways and drainage, but #57 is preferred for heavier traffic areas because the larger pieces interlock better. #67 is a good choice for walkways and lighter-duty applications where a smoother surface is needed. They weigh about the same per cubic yard.
How deep should gravel be for a driveway?
A gravel driveway should be 8–12 inches deep total, built in layers. The base layer (large stone) should be 4–6 inches, the middle layer (#57) should be 3–4 inches, and an optional top layer of finer stone adds 1–2 inches. On clay soil or in areas with heavy vehicles, go deeper — 12 inches minimum. On sandy, well-draining soil, 8 inches is usually sufficient. Always compact each layer before adding the next.
How much does a cubic yard of gravel weigh?
A cubic yard of gravel weighs between 2,600 and 3,000 pounds (1.3 to 1.5 tons) depending on the type and moisture content. #57 stone averages about 2,800 lbs/CY (1.4 tons). Crushed stone is slightly heavier at roughly 2,900 lbs/CY (1.45 tons) because the angular pieces pack more tightly. River rock is lighter at about 2,600 lbs/CY (1.3 tons) because the rounded shapes leave more air gaps.