Gravel Calculator
Calculate the exact amount of gravel needed for your driveway, walkway, or landscaping project. Get accurate estimates in cubic yards and tons with cost calculations and delivery options.
Gravel Calculator
Calculate gravel requirements for driveways, walkways, landscaping, and construction projects
Area Dimensions
Gravel Type & Specifications
How to Calculate Gravel Needed
Basic Calculation
Weight Conversion
Gravel Types and Applications
Pea Gravel
Small, smooth stones (¼" to ⅜"). Great for walkways and drainage.
Crushed Stone
Angular crushed rock. Excellent compaction for driveways.
River Rock
Smooth, water-polished stones for decorative use.
Decomposed Granite
Fine granite particles that compact into solid surface.
Gravel Depth Guidelines
| Application | Recommended Depth | Gravel Type | Notes |
|---|---|---|---|
| Driveway | 3-4 inches | Crushed stone | Compact in layers for durability |
| Walkway | 2-3 inches | Pea gravel, decomposed granite | Comfortable for walking |
| Decorative | 2-3 inches | River rock, colored stones | Use landscape fabric underneath |
| Drainage | 4-6 inches | Coarse gravel, crushed stone | Larger sizes for better drainage |
Installation Tips
Site Preparation
- • Clear area of vegetation and debris
- • Grade for proper drainage (2% slope)
- • Compact base soil if soft or loose
- • Install landscape fabric if desired
- • Mark utilities before digging
Installation Process
- • Spread gravel in thin, even layers
- • Rake to level surface
- • Compact each layer before adding more
- • Add edge restraints for stability
- • Water lightly to aid compaction
Cost-Saving Tips
Reduce Material Costs
- • Buy in bulk for better pricing
- • Compare prices from multiple suppliers
- • Consider recycled materials
- • Time purchases for off-season discounts
- • Join with neighbors for group orders
Reduce Labor Costs
- • Do site preparation yourself
- • Rent equipment rather than hiring
- • Schedule delivery during off-peak times
- • Have help available for spreading
- • Complete project in phases if needed
Common Mistakes to Avoid
Insufficient Depth
Too thin a layer leads to quick wear and migration of stones.
Poor Drainage
Water pooling damages the gravel base and creates maintenance issues.
Wrong Gravel Type
Using decorative gravel for structural applications leads to failure.
Frequently Asked Questions
How much extra gravel should I order?
Order 5-10% extra to account for compaction, future maintenance, and minor calculation errors. For irregular areas or first-time projects, consider ordering 15% extra.
Can I install gravel over existing concrete?
Yes, but ensure proper drainage around edges. The concrete should be in good condition and you may need additional edge restraints to keep gravel in place.
How long does a gravel driveway last?
A well-installed gravel driveway can last 5-10 years with proper maintenance. Regular grading, adding fresh stone, and weed control extend its lifespan.
What's the difference between crushed stone and gravel?
Crushed stone is mechanically broken into angular pieces that compact well. Natural gravel is rounded from weathering and doesn't compact as tightly, making it better for drainage.
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