Coverage and ordering estimator

Gravel Coverage Calculator

Estimate gravel coverage, cubic yards, tons, truckloads, and cost for real driveway, patio base, drainage, and landscape projects without guessing.

Quick answer

480.00 sq ft at 10.00 inches needs about 14.81 yd3 of Crusher run / DGA, or roughly 27.70 tons with buffer.

1 cubic yard = 27 cubic feet
Coverage changes with depth and compaction
Most jobs need a 10% to 15% field buffer

Project guidance

Recommended depth, gravel type, and field notes for the selected project.

Suggested depth: 10.00 in
Recommended gravel: Crusher run / DGA

A compactable base handles daily tire loads and reduces rutting.

Compaction: Install in lifts if the base is deeper than 4 to 5 inches.

Drainage: Crown or slope the surface so runoff moves off the drive.

Fabric / edging: Geotextile fabric helps where soils are soft or muddy.

Estimate gravel coverage and order quantity

Switch between estimating how much gravel you need and how much area your available gravel will cover.

Calculation modeProject type

Gravel typeTarget depth (inches)

Length (feet)Width (feet)Area override (sq ft)

Waste / compactionPrice per tonDelivery fee

A compactable base handles daily tire loads and reduces rutting.

Estimate snapshot

Easy-to-scan numbers for ordering, budgeting, and supplier calls.

Tons with buffer

27.70

tons ready to order

Best single ordering number once waste and compaction are included.

Cubic yards

14.81

yd3

Coverage area

480.00

sq ft

Truckloads

20 tons each

Cubic feet

400.00

Cubic meters

11.33

Material cost

Add price per ton

Total with delivery

Add price and delivery

Supplier-ready summary

Copy this for supplier calls, text messages, or quote requests.

Gravel Coverage Order Summary
Project type: Driveway
Calculation mode: Area + depth
Measured area: 480.00 sq ft
Dimensions: 40.00 ft x 12.00 ft
Target depth: 10.00 inches
Gravel type: Crusher run / DGA
Estimated cubic yards: 14.81
Estimated tons: 25.19
Tons with waste/compaction: 27.70
Estimated truckloads: 2
Waste/compaction factor: 10.00%

Practical recommendation

Best gravel type: Crusher run / DGA - Driveways, RV pads, and compacted base layers.
Compaction note: Install in lifts if the base is deeper than 4 to 5 inches.
Drainage note: Crown or slope the surface so runoff moves off the drive.
Fabric or edging: Geotextile fabric helps where soils are soft or muddy.

How It Works Depth Guide Gravel Types Cost Planning Order Checklist FAQs

How the Gravel Coverage Calculator works

Accurate gravel planning starts with understanding how area, depth, density, and compaction work together. If you underestimate even one of those variables, your driveway, trench, or pad can come up short. If you overestimate, you pay for material you do not need and possibly for a second haul to remove it.

This page is designed to handle both sides of the real-world question: how much gravel you need for a target area and how much area your available tons, cubic yards, or truckloads will cover. That makes it useful whether you are building a new section from scratch or trying to work with a fixed delivery quantity.

Project type	Best gravel type	Recommended depth	Why it works
Driveway	Crusher Run (#411)	8 to 12 inches	Fines lock the stone into a hard, stable driving surface.
Walkway	3/4" Minus	4 to 6 inches	Creates a comfortable, stable walking surface with compacted support.
Patio Base	#57 Crushed Stone	4 to 6 inches	Drains well while supporting pavers and hardscape loads.
Shed Foundation	#57 Clean Stone	4 to 6 inches	Helps move moisture away from runners and flooring.
Drainage Trench	River Rock or #57 Stone	12 to 18 inches	Larger voids improve water flow through the trench.
RV Parking Pad	Road Base (DGA)	10 to 12 inches	Handles heavy point loads when compacted in lifts.
Decorative Landscaping	Pea Gravel	2 to 3 inches	Aesthetic finish for beds and low-load garden areas.

Quick answers to common gravel coverage questions

How much gravel do I need?

Multiply your area by the finished depth, convert the result to cubic yards, and then convert to tons using your chosen gravel density. Add a buffer for compaction and small field losses before you order.

How much area does 1 ton cover?

Coverage depends on both depth and material density. One ton of clean decorative gravel can cover more area than one ton of dense graded base because the material weights are different per cubic yard.

What is best for driveways?

For most residential driveways, crusher run or another dense graded aggregate is the safest recommendation because it locks together under traffic better than clean or rounded decorative stone.

Step-by-step gravel calculation guide

1. Measure the site and convert depth to feet

Field crews usually measure length and width in feet, but gravel depth is often discussed in inches. Converting that depth to feet keeps the volume formula clean and avoids accidental under-ordering.

Depth	Feet	Cubic yards per sq ft
1 inch	0.0833 ft	0.0031 yd3
2 inches	0.1667 ft	0.0062 yd3
3 inches	0.2500 ft	0.0093 yd3
4 inches	0.3333 ft	0.0123 yd3
6 inches	0.5000 ft	0.0185 yd3

2. Use the core volumetric formula

Cubic yards = (length in feet x width in feet x depth in feet) / 27

If the job is 40 feet long, 12 feet wide, and 4 inches deep, convert 4 inches to 0.33 feet first. Then use the volume formula and convert the result to cubic yards.

3. Break irregular layouts into simpler shapes

Circular fire pit pads can use pi times radius squared. Curving paths can be estimated from centerline length times average width. Odd polygons are best broken into rectangles and triangles, then added together before you apply the depth.

Gravel tons vs cubic yards and why density changes the answer

Gravel estimation does not stop at cubic yards because most suppliers sell by the ton. That is why density matters so much. Loose rounded stone usually weighs less per cubic yard than compactable driveway base, so the same depth can require different tonnage depending on the product.

Pea gravel often sits around 1.2 to 1.3 tons per cubic yard, while crusher run or dense graded aggregate commonly falls in the 1.6 to 1.75 range. Decomposed granite also deserves extra attention because contractors often use a higher planning multiplier when they expect heavy compaction.

The contractor guide to gravel types and aggregate grades

Aggregate selection should match the load, drainage need, and finish quality of the project. Angular stone locks together and resists movement. Rounded decorative stone looks great but rarely gives the same structural value.

If you are pairing this estimate with a finished surface, keep the surrounding build-up in mind. A separate asphalt calculator helps when gravel becomes the structural base for paving, and a concrete calculator is useful when a stone base supports slab work.

Aggregate grade	Common name	Typical size	Best use
#3 Stone	Ballast	1" to 2"	Deep sub-bases and structural fill.
#57 Stone	Drainage Rock	1/2" to 1"	French drains, patio bases, and clean foundation beds.
#411	QP / Crusher Run	Dust to 3/4"	Compactable driveway foundations and parking pads.
Pea Gravel	Pea Stone	1/8" to 3/8"	Decorative beds and light-use paths.
Rip Rap	Erosion Rock	6" to 24"	Shoreline protection and major runoff control.

Strategic project connections

Gravel estimation rarely lives on its own. Retaining wall backfill, shed foundations, paver bases, and parking pads all connect to adjacent material decisions. If you need the finished paved footprint first, the square footage calculator helps map the measured area. If you are converting bulk space first, the cubic yard calculator is the fastest cross-check.

For paver systems and mixed material projects, your gravel order often sits alongside bedding sand. That is when the sand calculator becomes part of the same planning workflow.

Cost planning and procurement strategy

Material cost starts with tons, but the final invoice is shaped by delivery distance, truck availability, short-load rules, and the number of lifts required to place the stone correctly. That is why this page separates price per ton from delivery fee instead of pretending they are the same number.

Before you order, confirm the truck can access the drop zone and ask whether the supplier charges a short-load fee.

Moisture content can change delivered weight slightly, and most field crews still keep a 10% to 15% compaction buffer for real-world projects.

Contractor tips for field success

Use the lift method

Deep base sections should be placed and compacted in lifts rather than dumped to full depth at once.

Grade for runoff

Water should always have a path to leave the finished surface instead of sitting in ruts or along edges.

Choose fabric intentionally

Fabric helps most when you are separating unstable soil from structural aggregate or building a trench that can clog with fines.

Related project tools

Gravel CalculatorUse the original gravel calculator when you want a simpler volume-first estimate.Asphalt CalculatorPlan the finished paving layer when your gravel becomes the compacted sub-base.

Frequently asked questions

Practical gravel coverage questions answered in plain field-ready language.

How deep should gravel be for a driveway?

Most residential driveways need about 8 to 12 inches of compacted gravel, depending on traffic, soil strength, and drainage. Passenger-car drives can often live at the lower end, while heavier use and soft soil push you toward the deeper range.

Can I use pea gravel for my shed base?

Pea gravel is usually not the best shed-base choice because the rounded stones roll under load instead of locking together. A clean angular stone or compactable base works better when you need a firm, level pad.

What is the difference between crusher run and DGA?

In many markets they refer to nearly the same thing: a dense graded aggregate that blends larger stone with fines. The fines help the surface compact into a tighter, more stable layer than clean stone alone.

Do I really need a plate compactor, or can I use a hand tamper?

A hand tamper can work on very small walkways and touch-up areas, but larger pads and drive lanes come out more consistent with a plate compactor. Mechanical compaction is especially important once the base depth grows beyond a shallow decorative layer.

Is bulk gravel cheaper than bagged gravel?

Almost always, yes. Bulk orders usually cost less per ton or per cubic yard, especially once your project grows beyond a few bags. Delivery charges matter, but bulk material still wins for most medium and large jobs.

How do I calculate gravel for a circular fire pit?

Find the area first using pi times radius squared, then multiply by depth in feet. Once you have cubic feet, convert to cubic yards and then apply the density of your chosen gravel if you need tonnage.

What is the "daylight" rule for drainage?

A trench or drain line needs a real exit point. In practice, that means your water should discharge to open grade, a lower outlet, or an approved collection point instead of stopping underground with nowhere to go.

How much extra gravel should I order for compaction?

A 10 to 15 percent buffer is a practical starting point for most real projects. The rougher the subgrade and the deeper the compacted section, the more valuable that buffer becomes.

How much does gravel delivery cost in 2026?

Delivery cost depends on distance, truck size, short-load rules, and local fuel pricing, so the number varies by market. It is common to see delivery charged separately from the material, which is why a dedicated delivery-fee field helps with planning.

What gravel is best for a French drain?

A clean angular drainage stone such as #57 rock is usually the safest recommendation because it leaves open voids for water movement. Rounded river rock can also work, but the key is avoiding stone packed with fines that restrict flow.