BuildCalc Pro

Gravel Calculator

Calculate how much gravel you need in tons and cubic yards for driveways, walkways, landscaping, and drainage projects.

How to Use This Calculator

1. Select Imperial or Metric units. 2. Enter the length and width of the area. 3. Enter the desired gravel depth (in inches). 4. Select the gravel type for accurate weight estimation. 5. Optionally enter cost per ton. 6. Click "Calculate" to see results. Tip: For driveways, use 4-6 inches depth. For walking paths, 2-3 inches is sufficient.

How to Calculate Gravel for Driveways, Paths & Landscaping

Gravel is one of the most versatile landscaping and construction materials. Used for driveways, walkways, French drains, and decorative landscaping, accurate gravel estimation ensures you order the right amount without costly overages or shortages.

Gravel is sold by the ton or cubic yard. One cubic yard of gravel covers approximately 100 square feet at 3 inches deep, or 160 square feet at 2 inches deep. The weight varies by type: pea gravel weighs about 1.4 tons per cubic yard, while crushed stone weighs approximately 1.35 tons per cubic yard.

Recommended gravel depth varies by application. Driveways need 4-6 inches of gravel (often in two layers). Walking paths need 2-3 inches. French drains require 6-12 inches. Decorative landscaping beds typically use 2-3 inches of stone.

For driveways, a three-layer system works best: 4 inches of large crushed stone (3/4-1 inch) as the base, 2 inches of medium stone for stability, and 2 inches of fine gravel or crusher run on top. This prevents rutting and provides excellent drainage.

Gravel prices range from $10-$50 per ton depending on type and location. Pea gravel costs $10-$25 per ton, crushed limestone runs $20-$35 per ton, and decorative river rock costs $30-$50+ per ton. Delivery fees of $50-$100 per load are common for quantities under 10 tons.

Frequently Asked Questions

How much gravel do I need for a 10x20 driveway?

A 10×20 foot driveway (200 sq ft) at 4 inches deep needs about 2.5 cubic yards or approximately 3.4 tons of gravel. For a proper 6-inch deep driveway, you need 3.7 cubic yards or about 5 tons.

How many tons of gravel in a cubic yard?

Most gravel types weigh between 1.3-1.5 tons per cubic yard. Pea gravel averages 1.4 tons/cubic yard, crushed stone about 1.35 tons, and river rock about 1.5 tons. The exact weight depends on rock density and moisture content.

How deep should gravel be for a driveway?

Residential driveways should have 4-6 inches of gravel. Use a layered approach: 4 inches of large crushed stone as a base and 2 inches of fine gravel on top. For heavy vehicle traffic, increase to 8-12 inches total depth.

What is the best type of gravel for a driveway?

Crusher run (quarry process) is the best driveway gravel. It contains a mix of crushed stone and stone dust that compacts firmly. For the top layer, #57 stone or pea gravel provides good drainage. Avoid round river rock as it shifts under tires.