Estimate gravel volume, weight, and cost for driveways, paths, and landscaping.
Complete Guide to Gravel Selection and Installation
Gravel is one of the most versatile and cost-effective materials in construction and landscaping. From driveways and walkways to drainage systems and decorative features, the right gravel can transform your outdoor space while providing excellent functionality.
Our gravel calculator simplifies the estimation process by accounting for the specific density of different gravel types. Simply enter your area dimensions and desired depth to get accurate volume, weight, and cost estimates.
Choosing the Right Gravel
The best gravel for your project depends on its purpose. Angular crushed stone compacts tightly for stable surfaces like driveways and foundations. Rounded stones like pea gravel are comfortable for walking and aesthetically pleasing for landscaping. Understanding the properties of each type helps you make the right choice.
Gravel Types Comparison Chart
| Gravel Type | Size Range | Weight (tons/cu yd) | Cost per Ton | Best Applications |
|---|---|---|---|---|
| Crushed Stone #57 | 3/4″ – 1″ | 1.4 | $25-$45 | Driveways, drainage, base |
| Pea Gravel | 1/4″ – 1/2″ | 1.35 | $30-$55 | Walkways, patios, landscaping |
| River Rock | 1″ – 3″ | 1.5 | $40-$80 | Decorative, dry creek beds |
| Decomposed Granite | 1/4″ and smaller | 1.45 | $25-$50 | Paths, patios, xeriscaping |
| Limestone | 1/2″ – 2″ | 1.38 | $30-$55 | Driveways, base, fill |
| Crusher Run | Dust to 1.5″ | 1.5 | $20-$35 | Base layer, driveways |
| #8 Crushed Stone | 3/8″ – 1/2″ | 1.35 | $30-$45 | Top dressing, walkways |
| Marble Chips | 1/2″ – 1″ | 1.4 | $80-$150 | Decorative, garden beds |
| Lava Rock | 1/2″ – 2″ | 0.5-0.75 | $50-$100 | Landscaping, fire pits |
| Recycled Concrete | 3/4″ – 2″ | 1.3 | $10-$25 | Base, fill, driveways |
How to Install a Gravel Driveway
A properly installed gravel driveway provides an attractive, functional surface that can last decades. Follow these steps for professional results:
- Plan and mark the area: Use stakes and string to outline the driveway. Standard width is 10-12 feet for single lane, 16-24 feet for double lane. Add 6 inches of extra width on each side for a finished look.
- Excavate to the proper depth: Remove 8-12 inches of topsoil. Grade the area to direct water runoff, creating a slight crown (1/4 inch per foot from center to edge).
- Install landscape fabric: Lay commercial-grade geotextile fabric over the entire area to prevent gravel from sinking into the subsoil and to suppress weeds.
- Apply the base layer: Spread 4 inches of large crushed stone (#3 or #4) and compact thoroughly with a plate compactor.
- Add the middle layer: Apply 4 inches of #57 crushed stone and compact. This provides structural support and begins filling gaps.
- Finish with the surface layer: Spread 2-3 inches of #8 crushed stone or crusher run. Compact lightly for a smooth driving surface.
- Install edge restraints: Add metal edging, timbers, or stone borders to contain the gravel and maintain clean edges.
Gravel Coverage and Quantity Guide
| Area Size | 2 inch Depth | 3 inch Depth | 4 inch Depth | 6 inch Depth |
|---|---|---|---|---|
| 100 sq ft | 0.62 cu yd / 0.87 tons | 0.93 cu yd / 1.30 tons | 1.23 cu yd / 1.72 tons | 1.85 cu yd / 2.59 tons |
| 200 sq ft | 1.23 cu yd / 1.72 tons | 1.85 cu yd / 2.59 tons | 2.47 cu yd / 3.46 tons | 3.70 cu yd / 5.18 tons |
| 500 sq ft | 3.09 cu yd / 4.33 tons | 4.63 cu yd / 6.48 tons | 6.17 cu yd / 8.64 tons | 9.26 cu yd / 12.96 tons |
| 1,000 sq ft | 6.17 cu yd / 8.64 tons | 9.26 cu yd / 12.96 tons | 12.35 cu yd / 17.29 tons | 18.52 cu yd / 25.93 tons |
| 2,000 sq ft | 12.35 cu yd / 17.29 tons | 18.52 cu yd / 25.93 tons | 24.69 cu yd / 34.57 tons | 37.04 cu yd / 51.86 tons |
Note: Weights based on average crushed stone density of 1.4 tons per cubic yard. Actual weights vary by gravel type.
Gravel Maintenance Tips
- Rake regularly: Use a landscape rake every 2-4 weeks to redistribute displaced gravel, fill low spots, and maintain an even surface.
- Address drainage issues promptly: Standing water on gravel indicates poor drainage. Re-grade the area, add drainage channels, or install a French drain to redirect water.
- Top up annually: Add 1-2 inches of new surface gravel each year to maintain depth and appearance. This replaces gravel lost to displacement and settling.
- Control weeds proactively: Apply pre-emergent herbicide in early spring and late fall. Pull weeds when small rather than allowing them to establish root systems.
- Fill potholes immediately: Don’t let small depressions grow into larger problems. Fill with matching gravel and compact firmly.
- Grade before winter: Ensure proper grading before freeze-thaw seasons. Standing water that freezes creates heaving and significant surface damage.
- Use a box blade for large areas: For driveways longer than 100 feet, a tractor with a box blade grades and maintains the surface far more efficiently than hand raking.
- Manage snow carefully: Set snow plow blades 1-2 inches above the gravel surface to avoid displacing material. Use shoes on the plow blade and mark driveway edges with reflective stakes.
Frequently Asked Questions
How much gravel do I need for a 10×20 driveway?
For a 10×20 foot driveway with a recommended 4-inch depth, you’ll need approximately 2.47 cubic yards of gravel, which equals about 3.3-3.7 tons depending on the gravel type. Crushed stone is the most popular choice for driveways due to its excellent compaction and drainage properties.
How deep should gravel be for a driveway?
A gravel driveway should have a total depth of 8-12 inches, applied in three layers: a 4-inch base layer of large crushed stone (#3 or #57), a 4-inch middle layer of medium crushed stone (#57 or #411), and a 2-4 inch top layer of fine crushed stone or gravel (#8 or pea gravel).
How many tons of gravel do I need per cubic yard?
The weight of gravel per cubic yard varies by type: crushed stone weighs about 1.4 tons per cubic yard, pea gravel about 1.35 tons, river rock about 1.5 tons, decomposed granite about 1.45 tons, and limestone about 1.38 tons. Always verify with your supplier as moisture content affects weight.
What type of gravel is best for a driveway?
Crushed stone (#57 or #411) is the best choice for driveways. The angular edges interlock and compact tightly, creating a stable surface. For the top layer, #8 crushed stone or crusher run provides a smooth driving surface. Avoid round pea gravel for driveways as it shifts and doesn’t compact well.
How much does a ton of gravel cover?
One ton of gravel covers approximately 100 square feet at a 2-inch depth, 80 square feet at 3 inches, or 60 square feet at 4 inches. Coverage varies by gravel type and size. Larger stones cover less area per ton because of the air spaces between them.
Can I use gravel as a patio base?
Yes, gravel makes an excellent sub-base for patios. Use compactable crushed stone (#57 or crusher run) as a base layer, 4-6 inches deep, compacted in 2-inch lifts. This provides drainage and a stable foundation. For gravel-only patios, pea gravel or decomposed granite makes an attractive surface.
How do I keep gravel from spreading?
Install edge restraints such as metal or plastic landscape edging, brick borders, railroad ties, or natural stone edging. Set them at or slightly above the gravel level. For driveways, create a slight crown (higher in the center) so gravel migrates back toward the middle naturally. Compacting the gravel also helps.
What is the cheapest type of gravel?
Crushed concrete and recycled gravel are typically the cheapest at $10-$25 per ton. Plain crushed stone runs $25-$40 per ton. Pea gravel costs $25-$55 per ton. Decorative gravels like white marble or Mexican beach pebble can cost $100-$400 per ton. Buying in bulk always reduces the per-ton price.
Do I need landscape fabric under gravel?
Landscape fabric (geotextile) is recommended under gravel for pathways, patios, and landscaping beds. It prevents weeds from growing through and keeps the gravel from sinking into the soil. For driveways, a geotextile fabric beneath the base layer improves stability and prevents gravel from mixing with the subsoil.
How thick should gravel be for a walkway?
A gravel walkway should be 2-3 inches deep for the surface layer. Prepare a compacted base of 3-4 inches of crushed stone first. Total depth is typically 5-7 inches. For ADA-compliant paths, use fine crushed stone or decomposed granite that compacts to a firm, stable surface.
How much gravel do I need for a French drain?
A typical French drain requires 0.5-0.75 cubic yards of gravel per 10 linear feet. The trench is usually 12-18 inches wide and 18-24 inches deep, with gravel filling around and above the perforated pipe. Use washed #57 stone for optimal drainage around the pipe.
What is crusher run gravel?
Crusher run (also called processed gravel or QP — quarry process) is a blend of crushed stone and stone dust. The angular particles and fine dust compact tightly together, creating an extremely stable base. It’s ideal for driveways, parking areas, and base layers. It’s one of the best values in gravel products.
How do I calculate gravel for irregular shapes?
Break the irregular area into smaller regular shapes (rectangles, triangles, circles). Calculate the area of each section, sum them together, then multiply by the desired depth to get volume. Our calculator works for rectangular areas — for irregular shapes, you can make multiple calculations and add the results.
How long does a gravel driveway last?
A properly installed and maintained gravel driveway can last 25-100+ years with periodic maintenance. You’ll need to add a top layer of gravel every 2-5 years and grade the surface as needed. The base layers can last indefinitely. Gravel driveways require more maintenance than paved driveways but cost significantly less to install.
What is pea gravel?
Pea gravel consists of small, rounded stones typically 1/4 to 1/2 inch in diameter. It’s smooth and comes in natural earth tones. It’s popular for walkways, patios, dog runs, and landscaping. Because of its round shape, it doesn’t compact well and isn’t suitable as a driveway surface or structural base.
How do I compact gravel?
Use a plate compactor (for flat areas) or a jumping jack compactor (for trenches). Apply gravel in 2-inch layers, compacting each lift before adding the next. Lightly moisten the gravel before compacting for best results. For small areas, a hand tamper works but requires much more effort.
What’s the difference between gravel and crushed stone?
Gravel is naturally formed with rounded edges from water erosion. Crushed stone is mechanically broken with angular, sharp edges. Crushed stone compacts better and is preferred for structural bases. Gravel is smoother and more comfortable for walking. The terms are often used interchangeably in casual conversation.
How much does gravel delivery cost?
Gravel delivery typically costs $50-$150 for loads within 10-20 miles. Some suppliers include delivery in the material price for minimum orders (usually 5+ tons). Charges increase with distance and smaller loads. Most suppliers deliver by dump truck; a standard load is 10-15 tons.
Can I install gravel over grass?
While possible, it’s not recommended. The grass will decompose underneath, causing settling and unevenness. Best practice is to remove the sod, grade the area, lay landscape fabric, and then apply gravel. This prevents weeds, ensures proper drainage, and creates a long-lasting, level surface.
What is #57 stone?
#57 stone is a crushed stone product with pieces ranging from 1/2 inch to 1.5 inches. It’s one of the most versatile and widely used aggregates. Common uses include driveways (middle and top layers), drainage, pipe bedding, and concrete mixing. It compacts reasonably well and provides excellent drainage.
How much gravel do I need for a fire pit area?
For a 10-foot diameter circular fire pit area with a 3-inch layer of gravel, you’ll need approximately 0.87 cubic yards (about 1.2 tons) of decorative gravel. Use a border ring and landscape fabric underneath. Choose heat-resistant gravel like lava rock or crushed granite for the immediate fire pit area.
What gravel is best for drainage?
Washed #57 stone (3/4 to 1 inch) is ideal for drainage applications. It provides excellent water flow due to the large spaces between stones and contains no fines that could clog the system. For French drains, wrap the pipe in filter fabric before surrounding with #57 stone.
How do I maintain a gravel surface?
Regular maintenance includes: raking to redistribute displaced gravel, filling low spots and potholes, re-grading the surface annually with a landscape rake or tractor blade, controlling weeds (apply pre-emergent herbicide in spring and fall), and adding a fresh top layer every 2-4 years.
Is gravel cheaper than concrete?
Yes, significantly. A gravel driveway costs $1-$3 per square foot compared to $4-$8+ for concrete. For a 16×40 foot driveway, gravel costs approximately $1,000-$2,000 installed versus $3,000-$7,000+ for concrete. However, concrete requires less maintenance and has a cleaner appearance.
What is decomposed granite?
Decomposed granite (DG) is natural granite that has weathered into small particles (1/4 inch and smaller). It creates a natural, rustic look and compacts to a semi-firm surface. It’s excellent for pathways, patios, and xeriscaping. There are three grades: loose DG, stabilized DG (with resin), and DG with resin coating.
How do I prevent weeds in gravel?
Use landscape fabric beneath the gravel as a primary weed barrier. Apply pre-emergent herbicide in spring and fall. For existing weeds, use a post-emergent herbicide or vinegar-based solution. Maintain adequate gravel depth (3+ inches). Salt-based solutions work but can damage nearby plants and concrete.
What gravel is best for a dog run?
Pea gravel (3/8 inch) is the most popular choice for dog runs. It’s comfortable on paws, provides good drainage, and is easy to rinse clean. Avoid sharp crushed stone and very small gravel that sticks in paw pads. Apply 2-3 inches deep over landscape fabric. River rock (1-2 inch) is another good option for larger dogs.
How much gravel do I need for a shed base?
For a 10×12 foot shed base with a 4-inch gravel pad extending 1 foot beyond each side (12×14 feet), you’ll need approximately 2.07 cubic yards of gravel (about 2.9 tons). Use compactable crushed stone (#57 or crusher run) for stability. The pad should be level and firmly compacted.
What is the heaviest type of gravel?
River rock and trap rock are among the heaviest gravels at approximately 1.5-1.6 tons per cubic yard. Lighter options include pea gravel (1.35 tons/cu yd) and lava rock (0.5-0.75 tons/cu yd). The weight matters for delivery planning and for ensuring your landscape or structure can support the load.
Can gravel be used for parking areas?
Yes, gravel is an excellent and cost-effective material for parking areas. Use a 6-inch compacted base of crusher run topped with 2-3 inches of #57 stone. For higher traffic areas, consider using geocell or grid systems that confine the gravel and prevent rutting. Proper grading for drainage is essential.