Crushed Stone Calculator

Crushed Stone Calculator

Calculate the volume and weight of crushed stone, gravel, or sand needed for your project.

⚠ Disclaimer: Density varies significantly by stone type, moisture, and compaction. Defaults are ~2700 lbs/yd³ (imperial) and ~1600 kg/m³ (metric) for crushed stone; granite, limestone, and recycled asphalt differ. Actual weight depends on gradation (size mix), dust content, weathering, and how tightly the material is compacted. Always verify density with your supplier before ordering. This calculator assumes uniform conditions; site variations may require 10-20% buffer stock. Weight also affects transportation and equipment capacity—confirm truck limits with your hauler.

Project Dimensions

Standard crushed stone is ~2700 lbs/yd³ (1600 kg/m³)

Material Estimate

Total Weight Needed
3.33 tons
Volume
2.47 yd³
Total Weight
6666.67 lbs

Stone Buying Guide

Crushed stone is typically sold by the ton or by the cubic yard. One cubic yard of crushed stone covers approximately 80 square feet at a 4-inch depth.

When ordering, it's always better to have a little extra. A 10% overage is recommended to account for compaction and uneven subgrades.

Common Stone Types

  • #57 Stone: 1/2" to 1" size, used for driveways and drainage.
  • Crusher Run: Mixture of stone and dust, packs down very hard.
  • Pea Gravel: Small, rounded stones used for walkways and decor.
  • Rip Rap: Large, irregular stones used for erosion control.

Example Calculation

Scenario: You're building a driveway that's 50 feet long and 12 feet wide. You want a 4-inch base layer of crusher run. How much stone do you need?

Length:50 feetWidth:12 feetDepth:4 inches = 0.333 feetDensity:2700 lbs/yd³ (crusher run)

Step 1: Calculate volume in cubic feet = 50 × 12 × 0.333 = 200 cubic feet

Step 2: Convert to cubic yards = 200 ÷ 27 = 7.41 cubic yards

Step 3: Calculate weight = 7.41 × 2700 = 20,007 lbs ÷ 2000 = 10 tons

Result: Order 10-11 tons of crusher run (add 10% for compaction and waste). At $40/ton, expect to spend about $440 for the base layer material.

Frequently Asked Questions

How much does a cubic yard of stone weigh?

On average, a cubic yard of crushed stone weighs about 2,700 to 2,800 pounds, or roughly 1.4 tons.

What depth should my driveway be?

For a standard residential driveway, a base of 4 to 6 inches of crushed stone is recommended, followed by a 2-inch surface layer.

Should I use a weed barrier?

Yes, installing a heavy-duty landscape fabric under your stone will prevent weeds from growing up through the gravel and keep the stone from sinking into the soil.

Can I use stone for drainage?

Absolutely. Clean crushed stone (without dust) is excellent for French drains and retaining wall backfill as it allows water to pass through easily.

What's the difference between crushed stone and gravel?

Crushed stone has sharp, angular edges from mechanical crushing, which helps it lock together when compacted. Gravel is naturally rounded by water erosion and doesn't compact as tightly. Crushed stone is better for structural applications like driveways.

How do I calculate for an irregular shape?

Break the area into rectangular or triangular sections, calculate each separately, then add the volumes together. For very irregular areas, use the average length and average width. Always add 10-15% extra for waste.

Should I compact the stone after installation?

Yes, especially for driveways and structural bases. Use a plate compactor or roller after every 2-3 inch layer. Proper compaction increases stability and reduces future settling. Water lightly during compaction for better results.

How much does crushed stone cost?

Prices vary by region and material but typically range from $30-$60 per ton or $40-$75 per cubic yard. Delivery adds $50-$150 depending on distance. Specialty stones (marble chips, colored gravel) cost more, up to $100/ton.

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