Calculate Gravel Needed
Enter your project dimensions to calculate gravel volume, weight, and estimated cost. Perfect for driveways, pathways, landscaping, and construction projects.
Your Gravel Estimate
Cost Estimation
Gravel Types & Densities
Different gravel types have different densities, affecting weight calculations. Here are typical densities:
| Gravel Type | Density (lbs/yd³) | Best Use |
|---|---|---|
| Crushed Stone | 2,700 | Driveways, bases, roads (excellent compaction) |
| Pea Gravel | 2,800 | Pathways, playgrounds, decorative landscaping |
| River Rock | 2,600 | Drainage, decorative landscaping, dry creek beds |
| Decomposed Granite | 3,000 | Pathways, patios (compacts very well) |
| Limestone | 2,500 | Driveways, roads, base layer |
| Lava Rock | 2,900 | Decorative landscaping, fire pits, drainage |
Note on Density Variations
Densities vary by moisture content, compaction, and specific source. Always confirm weight per cubic yard with your local supplier before ordering large quantities.
Recommended Gravel Depths
| Application | Recommended Depth | Notes |
|---|---|---|
| Driveway | 4-6 inches | 6-8 inches for heavy vehicles or poor soil |
| Pathway | 2-3 inches | 3-4 inches for high traffic areas |
| Patio Base | 4-6 inches | Compact well before laying pavers |
| Drainage Layer | 4-6 inches | Use larger river rock or crushed stone |
| Decorative Landscaping | 2-3 inches | Sufficient for weed suppression and aesthetics |
| Shed/Structure Base | 4-6 inches | Compact thoroughly, add landscape fabric |
Delivery Truck Capacity Reference
Understanding truck capacity helps you plan deliveries and communicate effectively with suppliers.
| Truck Type | Capacity (Cubic Yards) | Capacity (Tons) | Notes |
|---|---|---|---|
| Single Axle Dump Truck | 10-14 yd³ | 13-19 tons | Standard residential delivery |
| Tandem Axle Dump Truck | 15-18 yd³ | 20-24 tons | Most common for large residential projects |
| Tri-Axle Dump Truck | 18-20 yd³ | 24-27 tons | Commercial and large-scale projects |
| Semi End Dump | 20-25 yd³ | 27-34 tons | Requires wide access, commercial use |
Delivery Considerations
- Ensure access width is at least 10-12 feet for standard dump trucks
- Check overhead clearance (minimum 14 feet for most dump trucks)
- Verify weight limits on driveways and roads leading to delivery site
- Delivery fees typically range from $50-$150 depending on distance
- Some suppliers offer discounts for full truck loads
How to Calculate Gravel Needed
Rectangle or Square Area
Formula
Volume (cubic feet) = Length × Width × Depth
Volume (cubic yards) = Volume (cubic feet) ÷ 27
Example: Driveway
Dimensions: 40 ft long × 12 ft wide × 4 inches deep
- Convert depth to feet: 4 inches ÷ 12 = 0.333 feet
- Volume in cubic feet: 40 × 12 × 0.333 = 160 cubic feet
- Volume in cubic yards: 160 ÷ 27 = 5.93 cubic yards
- Weight (crushed stone at 2,700 lbs/yd³): 5.93 × 2,700 = 16,011 lbs = 8.0 tons
Circular Area
Formula
Area = π × (Diameter ÷ 2)²
Volume (cubic feet) = Area × Depth
Example: Circular Patio
Dimensions: 16 ft diameter × 3 inches deep
- Radius: 16 ÷ 2 = 8 feet
- Area: 3.14159 × 8² = 201.06 square feet
- Depth in feet: 3 ÷ 12 = 0.25 feet
- Volume in cubic feet: 201.06 × 0.25 = 50.27 cubic feet
- Volume in cubic yards: 50.27 ÷ 27 = 1.86 cubic yards
Irregular Shapes
Method
For irregular shapes, calculate or measure the total area in square feet, then multiply by depth.
Tip: Break complex shapes into rectangles, triangles, or circles, calculate each section separately, then add them together.
Typical Gravel Costs by Region
Gravel pricing varies significantly by location, availability, and gravel type. Here are typical price ranges as of 2026:
| Gravel Type | Price per Cubic Yard | Price per Ton |
|---|---|---|
| Crushed Stone | $20-$50 | $15-$35 |
| Pea Gravel | $30-$60 | $22-$45 |
| River Rock | $40-$75 | $30-$55 |
| Decomposed Granite | $35-$65 | $25-$50 |
| Limestone | $25-$55 | $18-$40 |
| Lava Rock | $50-$90 | $35-$65 |
Additional Costs to Consider
- Delivery: $50-$150 depending on distance (typically free over a minimum order)
- Landscape Fabric: $0.10-$0.50 per square foot
- Edging/Borders: $2-$10 per linear foot
- Compaction/Installation: $5-$15 per square foot for professional installation
- Base Material: $15-$30 per cubic yard if needed for drainage or stability
Frequently Asked Questions
How do I calculate how much gravel I need?
Measure your area's length, width, and desired depth. For rectangles, multiply length × width × depth to get volume in cubic feet, then divide by 27 to convert to cubic yards. For example, a 10ft × 20ft area with 3-inch depth: 10 × 20 × 0.25 = 50 cubic feet = 1.85 cubic yards.
How much does a cubic yard of gravel weigh?
Weight varies by gravel type. Pea gravel typically weighs 2,800 lbs/yd³, crushed stone 2,700 lbs/yd³, river rock 2,600 lbs/yd³, and decomposed granite 3,000 lbs/yd³. Always confirm with your supplier as density can vary by source and moisture content.
What depth of gravel do I need for a driveway?
For a residential driveway, use 4-6 inches of gravel. Heavier traffic or poor soil conditions may require 6-8 inches. For pathways, 2-3 inches is usually sufficient. Always prepare a proper base and compact layers as you go.
How much does gravel cost?
Gravel costs vary by region, type, and quantity. Typical prices range from $15-$75 per cubic yard or $10-$50 per ton. Pea gravel and river rock tend to be more expensive than crushed stone. Delivery fees are usually $50-$150 depending on distance. Many suppliers offer discounts for bulk orders or full truck loads.
How many tons of gravel can a dump truck hold?
A standard single-axle dump truck holds 10-14 cubic yards (13-19 tons). A tandem axle truck holds 15-18 cubic yards (20-24 tons). A tri-axle truck holds 18-20 cubic yards (24-27 tons). Actual capacity depends on truck configuration, weight limits, and local regulations.
What is the difference between pea gravel and crushed stone?
Pea gravel consists of small, smooth, rounded stones (1/4 to 3/8 inch) often used for decorative landscaping and pathways. It does not compact well. Crushed stone has angular, jagged edges that interlock when compacted, making it ideal for driveways, bases, and areas requiring stability under load. Crushed stone is more suitable for structural applications.
Do I need landscape fabric under gravel?
Yes, landscape fabric (geotextile) is highly recommended. It prevents gravel from sinking into the soil over time, blocks weeds from growing through, improves drainage, and extends the life of your gravel installation. Install fabric after preparing and leveling the base, and before adding gravel.
Should I order extra gravel?
Yes, order 5-10% extra to account for compaction, settling, uneven surfaces, and waste. Gravel compacts significantly when tamped or driven on. It's better to have a small amount left over than to run short and need a second delivery.
How do I prepare the base before adding gravel?
Remove grass, roots, and organic material. Level and grade the area for proper drainage. Compact the soil thoroughly. For heavy-use areas like driveways, add a 2-4 inch compacted base layer of crushed aggregate. Install landscape fabric. Then add gravel in layers, compacting each layer before adding the next.
Can I install gravel myself or should I hire a professional?
Small projects (pathways, garden beds) are DIY-friendly. For large projects like driveways, consider hiring professionals. They have proper grading equipment, compaction tools, and experience with drainage requirements. Professional installation typically costs $5-$15 per square foot including materials.
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Privacy & Limitations
- All calculations run entirely in your browser -- nothing is sent to any server.
- Results are estimates and may vary based on actual conditions.
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Gravel Calculator FAQ
How do I calculate how much gravel I need?
Measure the area's length, width, and desired depth. Multiply length × width × depth to get volume in cubic feet. Divide by 27 to convert to cubic yards. For example, a 10ft × 20ft area with 3-inch depth: 10 × 20 × 0.25 = 50 cubic feet = 1.85 cubic yards.
How much does a cubic yard of gravel weigh?
Weight varies by gravel type. Pea gravel typically weighs 2,800 lbs/yd³, crushed stone 2,700 lbs/yd³, river rock 2,600 lbs/yd³, and decomposed granite 3,000 lbs/yd³. Always confirm with your supplier as density varies.
What depth of gravel do I need for a driveway?
For a residential driveway, use 4-6 inches of gravel. Heavier traffic may require 6-8 inches. For pathways, 2-3 inches is usually sufficient. Compact the base before adding gravel.
How much does gravel cost?
Gravel costs vary by region and type. Typical prices range from $15-$75 per cubic yard or $10-$50 per ton. Pea gravel and river rock tend to be more expensive than crushed stone. Delivery fees are usually $50-$150 depending on distance.
How many tons of gravel can a dump truck hold?
A standard dump truck holds 10-14 cubic yards (13-19 tons). A tandem axle truck holds 15-18 cubic yards (20-24 tons). A tri-axle truck holds 18-20 cubic yards (24-27 tons). Actual capacity depends on truck configuration and weight limits.
What is the difference between pea gravel and crushed stone?
Pea gravel consists of small, smooth, rounded stones (1/4 to 3/8 inch) often used for decorative landscaping and pathways. Crushed stone has angular, jagged edges that interlock when compacted, making it ideal for driveways and bases. Crushed stone compacts better and is more stable under load.
Do I need landscape fabric under gravel?
Yes, landscape fabric (geotextile) is recommended. It prevents gravel from sinking into the soil, blocks weeds, improves drainage, and extends the life of your gravel. Install fabric after preparing the base and before adding gravel.