Gravel Volume & Tonnage Calculator
Enter area and depth — figuring gravel takes seconds
Cubic Yards
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Total Tons—
Est. Cost—
Truck Loads—
Professional Gravel Estimation Tool
Gravel Calculator
Estimate gravel volume, tons, cubic yards, truck loads, and landscaping material costs instantly using our accurate gravel calculator designed for driveways, patios, walkways, drainage systems, and landscaping projects.
- Accurate Volume Estimation
- Landscaping Friendly
- Realtime Results
- Contractor Approved
Gravel Fill Diagram
Example Gravel Projects
Load common dimensions into the calculator—then adjust for your site.
Gravel Driveway
Single-car drive: 40 ft × 12 ft × 6 in crushed stone base.
- Volume
- ~8.9 cu yd
- Est. tons
- ~12.5 tons
- Est. cost
- ~$560
Walkway Gravel
Path: 3 ft × 30 ft × 4 in pea or crushed gravel.
- Volume
- ~1.1 cu yd
- Est. tons
- ~1.5 tons
- Est. cost
- ~$70
Patio Base
12 ft × 12 ft × 4 in compacted base under pavers.
- Volume
- ~1.8 cu yd
- Est. tons
- ~2.5 tons
- Est. cost
- ~$115
Drainage Trench
French drain run: 2 ft × 40 ft × 12 in clean stone.
- Volume
- ~3.0 cu yd
- Est. tons
- ~4.3 tons
- Est. cost
- ~$195
How the Gravel Calculator Works
Our gravel estimator starts with the same volume math used for concrete and aggregate: measure your area in length and width, choose depth (thickness of the gravel layer), and convert everything to feet before calculating cubic yards. That single number is what quarries and landscape yards think in—whether they sell by the yard or convert to tons at the scale house.
( Length × Width × Depth ) ÷ 27
= Cubic Yards → × tons/yd = Total Tons
Cubic yard conversion
One cubic yard equals 27 cubic feet. Multiply the three dimensions in feet, divide by 27, and you have loose volume in cubic yards. A gravel coverage calculator also shows square footage (length × width) so you can cross-check coverage charts on supplier websites.
Tonnage conversion and why density matters
Suppliers often quote and deliver by the ton. Loose crushed stone averages about 1.4 tons per cubic yard, but pea gravel, river rock, and decorative stone weigh less per yard; wet stone weighs more. Our gravel type dropdown adjusts density; you can override with a custom tons-per-yard value from your quarry ticket.
Gravel depth planning
Depth drives cost more than almost any other variable. A driveway base at 6 inches uses twice the material of 3 inches. Walkways and patios commonly use 3–4 inches of compacted base. Drainage trenches may need 12 inches or more of clean stone. Always specify compacted depth—the layer after compaction is thinner than loose dump height.
How contractors estimate gravel
Pros measure the paved or cleared area, add edge overage on irregular shapes, apply compaction and waste factors (often 10–15%), and round up to the nearest half-ton or full truck. They verify truck capacity (often 10–15 cubic yards) against access roads. Figuring gravel on paper before the order prevents short loads and idle crews.
Gravel Depth Guide
Recommended depths are compacted targets—add waste in the calculator for soft subgrade and spillage.
| Application | Recommended Depth | Typical Stone Size | Est. Tons / 100 sq ft |
|---|---|---|---|
| Driveways (base) | 4–6 in compacted | 3/4″ minus crushed | 2.1–3.1 tons |
| Walkways | 3–4 in | 3/8″–1/2″ crushed or pea | 1.6–2.1 tons |
| Patios (paver base) | 4 in | 3/4″ minus, well graded | 2.1 tons |
| Drainage / French drain | 8–12 in | 1″–2″ clean stone | 4.2–6.2 tons |
| Landscaping beds | 2–3 in decorative | 3/8″–1″ river or pea | 1.0–1.6 tons |
Common Gravel Estimation Mistakes
- Incorrect depth assumptions. Measuring loose dump depth instead of compacted thickness, or using patio depth for a driveway load, doubles errors. Confirm whether specs are before or after compaction.
- Ignoring compaction. Crushed stone settles 10–15% when compacted. Skipping a waste or compaction factor leaves ruts and bare spots before the project is done.
- Wrong gravel density. Using 1.4 tons per yard for lightweight pea gravel overorders; using it for heavy wet limestone underorders. Match density to stone type or your supplier scale ticket.
- Forgetting waste factor. Spillage, uneven subgrade, and over-excavation consume material. Curved edges and stepped grades add volume beyond a simple rectangle.
- Poor area measurement. Measure at the widest points; split circles and L-shapes into rectangles. A driveway gravel calculator is only as reliable as the length and width you enter.
Complete Guide to Calculating Gravel for Landscaping & Driveways
Whether you are figuring gravel for a new driveway base or topping a garden path, the process is the same: area × depth → cubic yards → tons → cost. Getting those steps right saves delivery fees, prevents mid-project shortages, and keeps heavy trucks off your lawn only once. This guide walks through how to calculate gravel like a landscape contractor—and how our free gravel calculator fits on the job site.
How to Calculate Gravel Volume
Start with a clear outline of the work area. For rectangles, measure length and width at the longest points. For curved beds, use average dimensions or break the shape into smaller rectangles and add volumes together. Depth is the thickness of the gravel layer you want after compaction—not the height of a loose pile straight off the truck.
Convert all dimensions to feet (or enter inches and meters directly in the tool). Multiply length × width × depth to get cubic feet. Divide by 27 for cubic yards. That is the core of every crushed stone calculator and quarry quote sheet. From there, multiply cubic yards by tons per yard (density) for scale-house weight.
Figuring Gravel for Driveways
Residential driveways often need a structural base under asphalt or concrete, or a well-compacted gravel surface in rural settings. Read our guide on best gravel for driveways for stone types and layer depths. A common spec is 4–6 inches of 3/4-inch minus crushed stone in one or two lifts, each compacted before the next. A 40-foot by 12-foot section at 6 inches is roughly 8.9 cubic yards—about 12.5 tons at 1.4 tons per yard. Use a driveway gravel calculator before you call the quarry so you can compare full truckload vs. partial delivery pricing.
Soft subgrade may need geotextile and thicker base. Crown the surface so water runs off; volume math does not include crown—add a small waste factor instead. If you are only resurfacing an existing drive, measure depth of new stone only, not total pavement thickness.
Gravel Coverage Guide for Paths and Patios
Walkways and patio bases typically use 3–4 inches of compacted gravel. At 4 inches, one cubic yard covers roughly 81 square feet (27 cu ft ÷ 0.33 ft depth). A gravel coverage calculator displays both cubic yards and square footage so you can sanity-check supplier coverage charts.
Pavers need stable, well-graded base—usually crushed stone with fines, not round river rock alone. Round stone shifts under foot traffic; crushed material locks together when compacted. Decorative gravel on beds is measured thinner (2–3 inches) and ordered by yard or ton depending on local market custom.
Landscaping Gravel Planning
Landscape designers specify gravel for contrast, drainage, and low-maintenance paths. Color and size affect density and cost per ton. Pea gravel and river rock look great but roll under tires—keep them to foot traffic areas. Mix sizes for visual texture; calculate volume once for the whole bed, then split orders if colors come from different bins.
Edging contains gravel and reduces spread into lawn. Fabric under decorative stone reduces mud but must drain—do not use solid plastic in wet climates. Volume includes only stone inside the edging; add 5% if borders are irregular.
Topsoil Removal and Rough Grade
Strip topsoil before structural base—it is organic, compressible, and unsuitable under load. Volume topsoil separately from gravel; redistribute on-site or haul off per your grading plan.
Fill Dirt Before Crushed Base
Fill dirt brings subgrade to elevation using lower-cost material. It is not a substitute for crushed stone base. Calculate fill volume with the same L×W×D math, then add your gravel layer on top after compacting fill lifts.
Sand Bedding for Pavers
After compacted gravel base, a 1-inch sand setting bed supports pavers. Sand volume is thin but covers full area—do not double-count sand depth inside gravel depth. Order sand by yard or ton using the same calculator with shallow depth.
Gravel Base Preparation
Remove organic topsoil and soft material until you reach firm subgrade. Compact subgrade with a plate compactor or roller on large areas. Install geotextile on silty soils to prevent pumping. Spread gravel in lifts no thicker than 4–6 inches loose, moisten lightly if dusty, and compact each lift before adding the next.
Base prep is not included in tonnage math but drives performance. Skimping on compaction causes settlement that no extra gravel fully fixes. After prep, re-measure depth if subgrade was graded down—then run your numbers again.
Drainage Gravel Estimation
French drains, footing drains, and dry wells use clean, open-graded stone (often 1–2 inch) with little fines so water flows. Trenches are narrow but deep—volume adds up on long runs. A 2-foot wide by 40-foot run at 12 inches deep is about 3 cubic yards. Use the drainage preset in our tool or enter trench dimensions directly.
Wrap perforated pipe in filter fabric; surround with stone per detail. Volume is stone only—pipe displacement is small on residential runs. Check local code for drain depth and daylighting requirements before digging.
Gravel Compaction Basics
Compaction reduces voids and increases stability. Crushed aggregates with angular particles compact better than rounded beach gravel. Target moisture helps—too dry and particles do not seat; too wet and you risk pumping. A plate compactor suits walks and small drives; vibratory rollers suit larger pads.
Because compacted thickness is less than loose thickness, contractors order extra or specify compacted thickness in contracts. If your spec says “6 inches compacted,” use 6 inches in the calculator plus a waste toggle for spill and uneven bottom.
Gravel Delivery Planning
Quarry trucks range from 5–15+ yards capacity. Our default planning factor is 10 cubic yards per load. Match truck size to gate width, overhead branches, and ground conditions—wet yards rut under heavy loads. Schedule spread equipment (skid steer, loader) before delivery; stone piles block access if dropped in the wrong spot.
Split deliveries if the site cannot hold full tonnage at once. Verify whether price is per ton, per yard, or per load including delivery radius. Rural surcharges and minimum loads affect small jobs; combining projects with a neighbor can hit minimums economically.
Contractor Landscaping Tips
Label quotes with stone type, depth, compacted vs. loose, and tons per yard used. Photograph subgrade and lifts for disputes. Compare scale ticket weight to estimate—if actual tons exceed quote by more than 10%, find out if density or area was off.
Pair gravel base estimates with concrete calculator outputs when pouring slabs on stone. Link mulch and topsoil orders separately—do not confuse cubic yards of gravel with yards of organic mulch; mulch is lighter and sold differently.
Ready to order? Use this gravel calculator on site, browse all landscaping calculators, read best gravel for driveways, and pair with our mulch calculator for complete bed and hardscape takeoffs. Accurate figuring gravel upfront keeps projects on budget and on schedule.
Gravel Calculator FAQ
How do I calculate how much gravel I need?
Multiply length × width × depth in feet to get cubic feet, divide by 27 for cubic yards, then multiply by tons per cubic yard (about 1.4 for many crushed products) for weight. Use our gravel calculator to mix units and add waste automatically.
How many tons are in a cubic yard of gravel?
Most crushed stone and driveway gravel is roughly 1.4 tons per cubic yard. Pea gravel and decorative stone may be 1.25–1.35; wet or dense limestone can be higher. Confirm with your supplier scale ticket.
What depth should gravel be for a driveway?
Compacted base gravel is often 4–6 inches for residential driveways, sometimes more on soft soil or heavy loads. Surface-only gravel drives may use 4–6 inches of well-graded crushed stone total, compacted in lifts.
How much gravel do I need for a patio?
A 12×12 ft patio base at 4 inches deep is about 1.78 cubic yards, roughly 2.5 tons at 1.4 tons/yd. Add 10% for waste and compaction if subgrade is uneven.
What is the formula for gravel calculation?
Cubic feet = length (ft) × width (ft) × depth (ft). Cubic yards = cubic feet ÷ 27. Tons = cubic yards × density (tons per cubic yard).
How accurate is a gravel calculator?
Volume is mathematically exact for rectangular prisms. Accuracy in the field depends on measurements, compaction, and density assumptions. Verify critical quantities with your quarry.
What type of gravel is best for driveways?
Well-graded crushed stone with fines (3/4-inch minus or similar) compacts into a strong base. Avoid smooth pea gravel as the only layer under vehicle traffic.
How much does gravel cost per ton?
Common crushed stone runs about $40–$60 per ton bulk delivered in many U.S. markets; decorative stone costs more. Enter your local quote in the cost-per-ton field.
Should I add extra gravel for waste?
Yes—typically 5–15% for compaction settlement, spillage, and uneven subgrade. Enable the waste toggle in our tool for automatic adjustment.
What size gravel should I use?
Driveway base: 3/4-inch minus crushed stone. Walkways: 3/8–1/2 inch. Drainage: 1–2 inch clean stone. Decorative beds: 3/8–1 inch per aesthetic and foot traffic.