Gravel Calculator
Angular, compacts well (~100 lb/ft³)
Gravel Coverage Guide
Standard depth: 2-4 inches for driveways, 2-3 inches for pathways and landscaping.
Add 10% extra: Order extra material to account for compaction, settling, and uneven ground.
Coverage per ton: Varies by gravel type, typically covers 80-100 sq ft at 2-inch depth.
Gravel Calculator Guide
Planning a driveway, pathway, or landscaping project? This calculator helps you determine exactly how much gravel you need, whether ordering by the ton or by the cubic yard.
Types of Gravel
Pea Gravel
Small, rounded stones about 3/8 inch in diameter. Ideal for walkways, playgrounds, and decorative borders. Its smooth surface makes it comfortable to walk on but it can shift under heavy loads.
Crushed Stone
Angular pieces that compact well and lock together. The most popular choice for driveways and base layers. Available in various sizes from dust to 1.5 inches.
River Rock
Smooth, rounded stones in various sizes and colors. Popular for decorative landscaping, dry creek beds, and drainage solutions. More expensive than crushed stone.
Lava Rock
Lightweight volcanic rock, typically red or black. Excellent for landscaping as it retains moisture and suppresses weeds. Not suitable for high-traffic areas.
Decomposed Granite (DG)
Finely crushed granite that compacts into a firm surface. Great for pathways and patios. Can be stabilized with binders for a more permanent surface.
Recommended Depths
- Driveways: 4-6 inches total (2-3 inch base + 2-3 inch top layer)
- Walkways: 2-3 inches
- Landscaping/Ground Cover: 2-3 inches
- Drainage Areas: 4-6 inches
- Under Pavers: 4-6 inches base
Ordering Tips
- Add 10-15% extra: Account for compaction, settling, and uneven ground.
- Bulk vs Bags: For projects over 0.5 cubic yards, bulk delivery is more economical.
- Compaction: Loose gravel compacts by about 30%. Factor this into your depth calculations.
Installation Tips
- Excavate the area to the desired depth plus 2 inches
- Install landscape fabric to prevent weed growth
- Add gravel in 2-inch layers, compacting each layer
- Finish with a top layer of decorative gravel
- Edge with metal or plastic edging to prevent spreading
Weight Reference
Approximate weight per cubic yard:
- Pea Gravel: 2,600 lbs (1.3 tons)
- Crushed Stone: 2,700 lbs (1.35 tons)
- River Rock: 2,300 lbs (1.15 tons)
- Lava Rock: 1,350 lbs (0.67 tons)
- Decomposed Granite: 2,700 lbs (1.35 tons)