Calculate how much gravel you need for driveways, walkways, patios, and landscaping projects. Get volume in cubic yards and weight in tons.
Gravel Calculation Formulas
Volume (Cubic Yards)
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Weight (Tons)
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Coverage per Ton
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Cost Estimate
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Gravel Type
Gravel Needed
Tons-tons
Cubic Yards-yd³
With 10% Extra-tons
Cubic Feet-ft³
Coverage Area-sq ft
50 lb Bags-bags
Estimated Cost-
Calculating Gravel for Your Project
Gravel is sold by weight (tons) or volume (cubic yards), and knowing exactly how much you need prevents costly overages or frustrating shortages. Our gravel calculator helps you estimate the right amount for driveways, walkways, patios, drainage projects, and decorative landscaping.
Different gravel types have different densities, so the same volume can weigh significantly different amounts. Our calculator accounts for this, giving you accurate ton estimates based on your chosen gravel type.
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Weight & Volume
Get both cubic yards and tons for accurate ordering.
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Multiple Types
Density adjustments for pea gravel, crushed stone, river rock, and more.
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Cost Estimates
Calculate material costs for budgeting.
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Depth Guidelines
Recommended depths for different applications.
Gravel Types and Uses
Choosing the right gravel type is essential for your project's success. Each type has specific characteristics that make it better suited for certain applications.
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Pea Gravel
Small, rounded stones (1/4" - 1/2"). Great for walkways, playgrounds, and decorative areas. Comfortable to walk on but can migrate—use edging. Not ideal for driveways as it doesn't compact.
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Crushed Stone
Angular pieces with sharp edges that interlock when compacted. Excellent for driveways, pathways, and under pavers. Available in various sizes (#57, #411, etc.). Compacts well and stays in place.
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River Rock
Smooth, rounded stones (1" - 3"+). Popular for decorative landscaping, dry creek beds, and drainage. Doesn't compact well—not for driveways. More expensive but very attractive.
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Crusher Run (QP)
Mix of crushed stone and stone dust. Compacts extremely well, making it ideal for driveways, base material, and under concrete. Also called 'quarry process' or 'road base.'
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Drainage Gravel
Clean, washed gravel (3/4" - 1.5") without fines. Used in French drains, behind retaining walls, and septic drain fields. Allows water to flow freely without clogging.
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Decomposed Granite (DG)
Finely crushed granite that compacts into a firm surface. Great for pathways and patios. Provides a natural, rustic look. Needs periodic topping as it erodes.
Recommended Gravel Depths
The proper depth ensures your gravel project performs well and looks good. Too shallow and you'll see bare spots; too deep wastes money and can be difficult to walk or drive on.
Application
Minimum Depth
Recommended
Notes
Decorative ground cover
1.5"
2"
Just covering soil
Garden paths
2"
2-3"
Light foot traffic
Walkways
2"
3"
Regular foot traffic
Patios/seating areas
3"
4"
Furniture, moderate use
Driveways (cars)
4"
4-6"
Regular vehicle use
Driveways (heavy)
6"
8-12"
Trucks, RVs, frequent use
Under pavers/stone
4"
6"
Base material
French drain
12"
12-18"
Around drain pipe
Ordering and Delivery Tips
Gravel is heavy and expensive to transport, so smart ordering can save significant money.
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Order 10-15% Extra
Always order more than calculated. Ground is never perfectly level, some gravel will spread beyond the area, and you may want a deeper layer in spots. Running short is more expensive than ordering extra.
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Delivery Options
Small amounts (1-2 tons): bags or pickup truck loads. Medium (3-10 tons): dump trailer delivery. Large (10+ tons): dump truck delivery. Delivery often requires flat, accessible area.
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Minimum Orders
Most suppliers have minimum delivery amounts (often 2-5 tons or 2-3 cubic yards). Below minimums, consider bagged gravel or pickup from the quarry—though bagged gravel costs significantly more per ton.
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Price Factors
Gravel costs $20-$75 per ton depending on type and location. Delivery adds $50-$150+ depending on distance. Colored or specialty gravels cost 2-3x more than standard.
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Delivery Placement
Specify where you want gravel dumped. The closer to the project area, the less wheelbarrowing. Ensure the delivery location can support a heavy truck—avoid soft ground or septic areas.
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Tons vs. Cubic Yards
Gravel is sold by weight (tons) or volume (cubic yards). 1 cubic yard ≈ 1.35-1.5 tons depending on type. Crushed stone is heavier than rounded gravel. Always clarify units when ordering.
Installation Best Practices
Proper installation ensures your gravel stays in place, drains well, and looks great for years.
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Prepare the Base
Remove all grass, weeds, and organic material. Excavate 2-4 inches below final grade. Compact soil firmly. A poor base leads to sinking, weeds, and uneven surfaces.
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Install Edging
Without edging, gravel migrates into lawns and beds. Use metal, plastic, brick, or stone edging. Secure edging stakes every 2-3 feet. Edging should be flush with or slightly above gravel level.
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Use Landscape Fabric
Quality landscape fabric prevents weeds and keeps gravel from sinking into soil. Overlap seams 6+ inches. This step is essential for low-maintenance, long-lasting results.
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Apply in Layers
For deep applications (4"+), apply in 2" layers, compacting each before adding more. This prevents settling and creates a firmer surface. Use a plate compactor for driveways.
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Grade for Drainage
Slope gravel 1-2% (1/8" - 1/4" per foot) away from buildings. Crown driveways in the center. Proper drainage prevents puddles and extends gravel life.
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Top Dress Regularly
Gravel compacts and spreads over time, especially on driveways. Plan to add a thin layer (1/2" - 1") every 2-3 years to maintain proper depth and appearance.
Cost Considerations
Understanding the full cost of a gravel project helps with budgeting and material selection.
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Material Costs
Basic gravel: $20-$40/ton. Crushed stone: $25-$50/ton. River rock: $50-$100/ton. Decorative/colored: $75-$150/ton. Prices vary significantly by region and availability.
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Delivery Costs
Expect $50-$150 for local delivery (under 10 miles). Long-distance delivery adds significantly. Some suppliers offer free delivery over certain amounts (often 10+ tons).
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Installation Labor
DIY saves money but is hard work—a ton of gravel requires ~15-20 wheelbarrow loads. Professional installation runs $10-$25 per square foot including materials.
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Bagged vs. Bulk
Bagged gravel: $4-$8 per 50 lb bag = $160-$320 per ton. Bulk gravel: $20-$75 per ton. Bags only make sense for very small projects (under 500 lbs).
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Project Examples
10x20 ft driveway (4" deep): ~3 tons = $150-$300 materials. 10x10 ft patio (3" deep): ~1 ton = $50-$100 materials. 100 sq ft garden path (2" deep): ~0.5 tons = $25-$50 materials.
It depends on the type: Pea gravel weighs about 2,700 lbs (1.35 tons) per cubic yard. Crushed stone weighs about 2,800 lbs (1.4 tons). Crusher run weighs about 3,000 lbs (1.5 tons). Always confirm with your supplier as weights vary by moisture content and stone type.
How many tons of gravel do I need for my driveway?
For a 12x50 ft driveway at 4 inches deep: (12 × 50 × 0.33) ÷ 27 = 7.4 cubic yards × 1.4 tons/yd³ = about 10.4 tons. Add 10% extra for a total of ~11.5 tons. Use our calculator above for precise estimates.
Should I use pea gravel or crushed stone for my driveway?
Crushed stone is better for driveways. Its angular edges interlock when compacted, creating a stable surface that stays in place. Pea gravel is smooth and round—it shifts under tires, creates ruts, and kicks up. Use pea gravel for walkways, patios, and decorative areas instead.
How thick should gravel be for a driveway?
For passenger vehicles: 4-6 inches of compacted gravel over a prepared base. For heavy vehicles (trucks, RVs): 6-12 inches. Apply in layers, compacting each 2-inch lift. The base layer should be larger stone (crusher run), with a finer top layer.
Do I need landscape fabric under gravel?
Yes, in most cases. Landscape fabric prevents weeds from growing through the gravel and stops gravel from sinking into the soil over time. Use commercial-grade fabric (not cheap plastic sheeting). The only exception is drainage applications where you want water to percolate into the soil.
How do I keep gravel from spreading?
Install proper edging—metal, plastic, brick, or stone—along all borders. The edging should be flush with or slightly above the gravel surface. For driveways, consider a slight crown (higher in the middle) so gravel doesn't migrate to edges.
How much does gravel cost delivered?
Gravel costs $20-$75 per ton for basic types, plus $50-$150 for delivery (depending on distance and amount). A typical driveway project (10-15 tons) might cost $400-$800 for materials delivered. Get multiple quotes—prices vary significantly between suppliers.
Can I put new gravel over old gravel?
Yes, but first assess the old gravel. Remove any weeds and rake out high/low spots. If the old gravel is less than 2 inches deep or severely rutted, you may need to add significant new material. Consider refreshing landscape fabric if the old one is damaged or missing.
Examples
Residential driveway: 20 × 10 ft at 3 inches deep
A homeowner is refreshing a single-car gravel driveway that measures 20 feet long by 10 feet wide and wants a 3-inch top layer of crushed stone.
ResultAbout 1.85 cubic yards of crushed stone, or roughly 2.6 tons — order ~2.9 tons with a 10% overage.
Convert depth to feet: 3 in ÷ 12 = 0.25 ft. Volume in cubic feet: 20 × 10 × 0.25 = 50 ft³. Convert to cubic yards: 50 ÷ 27 ≈ 1.85 yd³. Multiply by the crushed-stone density of 1.4 tons/yd³: 1.85 × 1.4 ≈ 2.59 tons. Adding the recommended 10% overage gives about 2.85 tons, which most suppliers will round up to a 3-ton delivery.
Frequently asked questions
Should I order gravel by cubic yards or tons?
Suppliers sell gravel either way, and both refer to the same pile — just measured differently. Cubic yards measure volume (the space the gravel will fill), while tons measure weight (what the truck actually delivers). Use cubic yards when you are sizing a project to a footprint and depth, and use tons when comparing quotes or planning hauling. For crushed stone, 1 cubic yard ≈ 1.4 tons, so 1.85 yd³ on a small driveway is about 2.6 tons.
Which gravel type should I use — pea, crushed, or base?
Pea gravel is small (1/4–1/2 inch), smooth, and rounded; it is comfortable underfoot for walkways, patios, and play areas but shifts under tires. Crushed stone (1/2–1 inch) has angular faces that interlock, making it the go-to surface for driveways and under pavers. Crusher run (base) blends crushed stone with stone dust and compacts into a near-solid layer, which is why it is used as the foundation under driveways, slabs, and retaining walls.
How deep should gravel be for different uses?
Decorative ground cover and garden borders only need about 2 inches. Walkways and garden paths perform well at 2–3 inches over a stable base. Patios and seating areas need 3–4 inches so furniture does not sink. Passenger-car driveways want 4–6 inches of compacted material — typically a 4-inch base of crusher run with a 2-inch top of crushed stone. Heavy-vehicle driveways and frequently used farm lanes should be 8–12 inches and built up in 2-inch lifts.
Will gravel actually drain water, and how should I install it for drainage?
Clean, washed gravel (3/4 to 1.5 inch, with no fines) drains very well and is the standard fill for French drains, behind retaining walls, and around foundation footings. Crusher run, by contrast, contains fines that bind together and shed water rather than letting it pass through. For drainage applications, wrap the trench in permeable landscape fabric, set perforated pipe (holes facing down) on a 2-inch bed of clean gravel, and surround it with 12–18 inches of the same material before covering.
Do I really need edging around a gravel area?
Yes, in nearly every case. Without a physical edge, gravel migrates into lawns, beds, and walkways within a season or two, leaving bare patches that need to be re-topped. Steel, aluminum, paver, brick, or pressure-treated timber edging all work; set the top of the edging flush with — or slightly above — the finished gravel surface, and stake every 2–3 feet. The one exception is large naturalized areas where some gravel creep is acceptable.
How much extra gravel should I order beyond the calculated amount?
Add 10–15% above the calculated volume for typical projects. The ground is rarely perfectly flat, gravel settles and compacts as it is driven on, and small low spots usually need topping after the first rainy season. For long driveways or projects where re-delivery is expensive, lean toward the higher end. For small decorative areas where you can easily top up later, 10% is usually enough.
