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Gravel Calculator

Gravel is used for driveways, pathways, drainage, and landscaping. Because it's sold by both weight (tons) and volume (cubic yards), it can be confusing to estimate. This calculator handles the conversion for you.

Enter Your Measurements

Results

Enter your measurements to see results

How to Use This Calculator

  1. Measure the length and width of your area in feet.
  2. Determine the depth of gravel needed in inches.
  3. Enter the values and review volume and weight estimates.
  4. Optionally enter price per ton for cost estimate.

How Gravel Calculation Works

This calculator computes volume from your dimensions, then estimates weight using the average density of gravel (approximately 2,800 lbs per cubic yard). Actual weight varies by gravel type — pea gravel is lighter (~2,500 lbs/yd³), crushed limestone is heavier (~2,700–3,000 lbs/yd³). For driveways, a depth of 4–6 inches is recommended with a compacted base layer.

Formula

Volume (cubic feet) = Length × Width × Depth(in)/12. Divide by 27 for cubic yards. Gravel weighs approximately 2,800 lbs (1.4 tons) per cubic yard. Multiply cubic yards × 1.4 for tons.

Frequently Asked Questions

How deep should a gravel driveway be?
A gravel driveway should be 4–6 inches deep after compaction. For heavy vehicle traffic, use 6–8 inches with multiple layers: a base layer of larger stone (#3 or #57) topped with a finer surface layer (like #411 or crusher run).
How many tons of gravel do I need for a driveway?
A typical single-car driveway (12×50 feet) at 4 inches deep needs about 3.3 cubic yards or roughly 4.6 tons of gravel. A two-car driveway (24×50 feet) at the same depth needs about 6.6 cubic yards or 9.3 tons.
How much does a ton of gravel cover?
One ton of gravel covers approximately 80-100 square feet at 2 inches deep, 50-60 square feet at 3 inches deep, or 40-50 square feet at 4 inches deep, depending on the type of gravel.
What is the cheapest gravel for a driveway?
Crushed stone or 'crusher run' is typically the most affordable at $20–$40 per ton. Pea gravel runs $25–$50 per ton. Decorative gravels like river rock or marble chips are the most expensive at $50–$150+ per ton.

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