Gravel Stone Calculator
A versatile calculator for projects involving gravel stones.
Essential Guide to the Gravel Stone Calculator
The gravel stone calculator is your go-to tool for estimating gravel requirements for driveways, walkways, drainage systems, and decorative landscaping. Gravel is one of the most versatile and cost-effective materials for outdoor projects, offering excellent drainage, durability, and aesthetic appeal. This calculator helps you determine exactly how much gravel you need in both cubic yards and tons, preventing costly over-ordering or project-delaying shortages.
Understanding the difference between gravel types is crucial for project success. Pea gravel (small, rounded stones) is perfect for walkways and decorative applications, while larger river rock works well for drainage and erosion control. Angular crushed stone provides superior compaction for driveway bases. Our calculator allows you to select your specific gravel type, applying the correct density factors to convert volume to weight for accurate ordering from suppliers.
Frequently Asked Questions
What is the best gravel for a driveway?
For driveways, use angular crushed stone (#57 or #3) rather than rounded gravel. The angular edges interlock when compacted, creating a stable, durable surface that resists rutting and displacement under vehicle weight.
How deep should gravel be for a driveway?
A minimum of 4-6 inches of compacted gravel is recommended for passenger vehicles. For heavier trucks or poor soil conditions, increase the depth to 8-10 inches. Always compact in 2-3 inch layers for best results.
What is the difference between pea gravel and crushed stone?
Pea gravel consists of small, smooth, rounded stones (typically 1/4 to 1/2 inch) that are comfortable to walk on and ideal for decorative use. Crushed stone has angular, jagged edges that interlock when compacted, making it superior for structural bases and driveways.
How many tons of gravel do I need for a 10x20 driveway?
For a 10ft × 20ft driveway with a 4-inch base, you'll need approximately 2.5 cubic yards or 3.5-4 tons of gravel. Use our calculator with your exact dimensions for a precise estimate.
Do I need to compact gravel?
Yes, compaction is essential for any load-bearing application like driveways or patio bases. Use a plate compactor or roller to compact each 2-3 inch layer. This increases stability and reduces future settling.
Can I put gravel directly on grass?
No, you should remove grass and topsoil first, then lay geotextile fabric to prevent weeds and stabilize the base. This ensures your gravel stays in place and maintains a clean appearance.