How much pea gravel do I need? Enter your area dimensions and depth to get instant estimates in tons, cubic yards, and bags with accurate material costs.
Accounts for soil settling and compaction loss
10% typical for gravel settling and spillage
Ready to calculate
Enter your area dimensions
Last updated March 31, 2026 by our expert review team
162 sq ft/yd³
Light pathways
81 sq ft/yd³
Standard coverage
54 sq ft/yd³
Heavy traffic areas
Ruth Wairimu
Landscape Architect
Landscape architect with 9+ years of experience, AAK member, IFLA climate activist, and founder of Bloomwell.
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Certified Cost & Estimating Professional
AACE-certified estimator working with 20+ insulation companies including the two largest franchises in America.
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How we verify our calculatorsInstall landscape edging before spreading gravel. Without a border, pea gravel migrates into lawn areas within months.
Lay commercial-grade landscape fabric underneath and overlap seams by 6 inches. The Landscaping Network recommends woven polypropylene fabric for gravel installations, blocking weeds for 5 to 7 years versus 1 to 2 with cheap fabric.
Order washed pea gravel instead of unwashed. It costs $5 to $10 more per ton but drains better and leaves no dust film.
Compact pea gravel with a plate compactor after spreading. Loose gravel shifts underfoot and takes months to settle naturally. For a stable base under pavers, see our Paver Base Calculator.
Plan to top up 1/2 inch of gravel annually. Foot traffic and rain runoff thin coverage over time, especially along edges.
For drainage projects, combine pea gravel with a perforated pipe system. Use our French Drain Calculator to estimate materials for proper water management.
For a complete driveway estimate with base layers, use our gravel driveway calculator.
The calculator converts your length, width, and depth measurements into cubic yards using standard volume formulas, then multiplies by pea gravel's density (1.4 tons per cubic yard) to give you the weight for ordering from a landscape supplier. The compaction factor accounts for the 15 to 25% volume loss that occurs when loose gravel settles and compacts underfoot. Skip this adjustment and you'll end up with thin spots within weeks. The waste factor covers edge spillage and uneven subgrade.
Formula
Length × Width × (Depth ÷ 12) = Cubic Feet
Cubic Feet ÷ 27 × 1.4 = Tons needed
How much pea gravel do I need?
Multiply length x width x depth (in inches), divide by 12 for cubic feet, then by 27 for cubic yards. A 10x10 patio at 2 inches deep needs about 0.62 cubic yards.
How deep should pea gravel be?
2 inches for pathways, 3 to 4 inches for driveways, and 4 to 6 inches for drainage. Deeper than 4 inches offers no extra benefit for most uses.
How much does pea gravel weigh?
USGS aggregate data confirms pea gravel weighs about 1.4 tons (2,800 lbs) per cubic yard. A 50-lb bag covers roughly 0.5 cubic feet. One cubic yard will overload a standard pickup truck.
How much pea gravel for a patio?
A 10x12 patio at 2 inches deep needs about 0.74 cubic yards (just over 1 ton). At 3 inches, bump to 1.1 cubic yards. Add 10% for compaction.
Bulk or bags?
Bulk is cheaper above 1 cubic yard: $30 to $60/ton delivered vs. $200+/ton in bags. Bags only make sense under 0.5 cubic yards.
Pea gravel vs crushed stone?
Pea gravel is smooth and comfortable for patios and paths. Crushed stone locks together on slopes and driveways. Use our Stone Calculator to estimate crushed stone for base layers.
Does pea gravel need edging?
Yes. Without edging it spreads into your yard within weeks. Use steel or aluminum landscape edging installed 1/2 inch above gravel depth.
| Material | Cost/Ton | Drainage | Walkability | Best Use |
|---|---|---|---|---|
| Pea Gravel (3/8") | $30-60 | Excellent | Comfortable | Patios, paths, play areas |
| Crushed Stone (#57) | $25-50 | Good | Rough | Driveways, base layers |
| River Rock (1-3") | $50-120 | Excellent | Difficult | Decorative beds, dry creek beds |
| Decomposed Granite | $35-70 | Moderate | Firm | Formal paths, xeriscaping |
Perfect starter project. Add steel edging ($40-60) and landscape fabric ($20-30). Total project cost under $150 including materials.
Order 1 ton for delivery. Leftover gravel works great for filling low spots around your yard. Install stepping stones on top for a polished look.
Bulk delivery is the only practical option at this volume. Specify washed pea gravel for drainage applications to avoid fine particles clogging your drain pipe.
No edging or border
Pea gravel migrates into grass and walkways within weeks. Install steel or aluminum edging flush with the gravel surface.
Spreading too thin
A 1-inch layer exposes fabric underneath and offers no weed suppression. Use 2 to 3 inches minimum.
Skipping the weed barrier
Weeds grow through bare gravel within one season. Use 3+ oz commercial fabric, pinned every 12 inches with 6-inch seam overlap.
Using on steep slopes
Pea gravel rolls downhill on grades above 5%. Use angular crushed stone instead, or add retaining borders every 4 to 5 feet.
Important Disclaimer
These estimates are for planning purposes only. Actual costs vary by location, material availability, and project complexity. Always get at least 3 local quotes. This calculator does not replace professional advice.