Gravel Driveway Calculator · Tonnage, Volume & Cost Estimator for Gravel Driveways

Gravel Driveway Calculator

Estimate gravel tonnage, volume, and cost for a new or refreshed gravel driveway with separate base and surface layers, waste allowance, truckload planning, and full cost breakdown.

Unit system
Driveway dimensions
ft
ft
sq ft
%
$ flat
A typical residential gravel driveway is 10–12 ft wide and long enough to reach from the road to a parking area. Enter any additional parking or turnaround area in the extra area field. A waste allowance of 5–15% is standard for gravel because it settles and compacts during installation and after driving.
Layer 1 : Base course (foundation)
The base course is the thick, load-bearing layer that holds the weight of vehicles and prevents the driveway from sinking into the soil.
in
kg/m³
$ / ton
Layer 2 : Surface course (driving layer)
The surface course is the visible top layer, it provides traction, drainage, and the finished look. Typically #57, #8, or pea gravel.
in
kg/m³
$ / ton
Recommended build-up: A standard residential gravel driveway uses 4–6 inches of base course (crusher run or #411) topped with 2–4 inches of surface course (#57, #8, or pea gravel). On soft ground, increase the base depth to 6–8 inches. On firm ground, 4 inches of base is usually enough. Choose "No surface layer" if you are only laying the base course.
Gravel Driveway Estimate
Total Gravel Required (with waste)
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— area — volume — total cost
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Driveway area
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Total volume (with waste)
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Total gravel weight
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Total cost
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Layer-by-layer breakdown
LayerDepthVolumeWeight (with waste)Cost
Cost breakdown
ComponentCostPer sq ft% of total
Volume & weight detail
MetricCompacted (no waste)With waste allowanceNotes
Truckload estimate
Truck typePayload per loadLoads requiredNotes
Full project summary
MetricValueNotes
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A gravel driveway lives or dies by its base. Get the depth wrong and you’ll be raking ruts back into place every spring. This tool handles the arithmetic for both courses so you can order the right tonnage the first time. Enter your driveway length and width, pick your gravel types, set the depths you want, and the calculator returns the weight, volume, cost, and truckload count. It works in imperial or metric units and lets you add a waste allowance for compaction. Whether you’re refreshing an existing drive or starting from bare ground, the numbers here give you something concrete to take to a supplier.

 

How to Use the Gravel Driveway Calculator

  1. Choose your unit system: imperial or metric.

  2. Measure your driveway length and width in feet or metres. Add any extra parking or turnaround area in the dedicated field.

  3. Set a waste allowance. Ten percent is a reasonable starting point for compaction and spillage.

  4. Pick your base gravel type from the dropdown. The density field fills in automatically unless you choose “Custom density.”

  5. Enter the base depth you want. Four inches works on firm ground; go deeper on soft soil.

  6. Select a surface gravel type, or choose “No surface layer” if you’re only laying base.

  7. Enter the surface depth. Two to three inches is typical for a finished driving layer.

  8. Add a flat delivery charge if your supplier quotes one, then hit Calculate.

 

How the Gravel Driveway Calculator Formula Works

The calculator multiplies area by depth to get volume, then multiplies volume by density to get weight. A waste factor is applied on top.

Formula: Weight = Area × Depth × Density × (1 + Waste%)

For the base course, the calculator computes:

Formula: Base weight = (Length × Width + Extra area) × Base depth × Base density × (1 + Waste%)

Labeled diagram showing how length, width, depth, density, and waste factor combine to estimate gravel weight.

The surface course uses the same formula with its own depth and density values. If you select “No surface layer,” the surface volume and weight come back as zero.

Density is the variable most people overlook. Crusher run sits around 2,200 kg/m³ (137 lb/ft³). Pea gravel is lighter at roughly 1,800 kg/m³ (112 lb/ft³). Washed #57 stone runs heavier at about 2,600 kg/m³ (162 lb/ft³) because it’s clean, solid stone with no dust.

Worked Example

Let’s run a 72-foot driveway that’s 14 feet wide. You’re laying a 5-inch base of crusher run and topping it with 3 inches of #57 stone. Waste allowance is 12%.

Step 1 : Area. 72 × 14 = 1,008 sq ft. No extra area.

Step 2 : Base volume. 1,008 sq ft × (5 ÷ 12) ft = 420 cubic feet. Divide by 27 for cubic yards: 15.56 yd³.

Step 3 : Base weight. Crusher run at 137 lb/ft³. 420 × 137 = 57,540 lb. Add 12% waste: 64,445 lb. Convert to US tons (÷ 2,000): 32.22 tons.

Step 4 : Surface volume. 1,008 × (3 ÷ 12) = 252 ft³, or 9.33 yd³.

Step 5 : Surface weight. #57 stone at 162 lb/ft³. 252 × 162 = 40,824 lb. With 12% waste: 45,723 lb, or 22.86 tons.

Step 6 : Total. 32.22 + 22.86 = 55.08 US tons. At $35 per ton for base and $50 per ton for surface, material cost is $1,127.70 + $1,143 = $2,270.70. Add $150 delivery and you’re at $2,420.70.

That’s about $2.40 per square foot. For a driveway of this length with a proper two-course build, that’s in the normal range.

What Is a Gravel Driveway Base Course?

The base course is the thick, compacted layer that carries the weight of vehicles and stops the driveway from sinking into the soil. It sits directly on the subgrade and is made from angular, compactable stone like crusher run or #411 limestone. Without a proper base, even the best surface gravel will rut and shift within a season.

Crusher Run vs #57 Stone: What’s the Difference for a Driveway?

Crusher run is a compactable mix of crushed stone and dust; #57 stone is clean, washed gravel with no fines. That single difference dust versus no dust decides where each material belongs on a driveway.

DimensionCrusher Run#57 Stone
CompositionCrushed stone plus stone dustWashed stone, no dust
Compaction85–95% of loose volume70–80% of loose volume
DrainageSheds water; needs slopeDrains freely through the stone
Best layerBase courseSurface course
Typical size3/4 inch down to dust3/4 to 1 inch uniform
Load-bearingHigh, once compactedLow without a base beneath
Cost per ton (US)$15–$35$25–$50

Crusher run wins on any driveway that needs a firm, rut-resistant surface. The dust fills the gaps between stones and locks everything together under compaction. It’s the right choice for the base layer on every driveway, and it can serve as a finished surface if you don’t mind a gray, dusty look.

#57 stone wins where drainage matters more than surface firmness. If your driveway sits over clay soil or a wet spot, a #57 surface lets water pass through instead of pooling. But #57 alone won’t hold up under tires. It needs crusher run underneath.

The calculator’s math supports both layers. You can select crusher run for the base, #57 stone for the surface, and get separate tonnage and cost figures for each. It does not model soil conditions, slope, or drainage, you’ll need to account for those yourself.

What People Use the Gravel Driveway Calculator For

Planning a New Residential Driveway

A homeowner with a bare dirt or gravel patch wants to know the total tonnage before calling suppliers. The dimensions and base depth are the critical inputs here. A 40-foot driveway that’s 10 feet wide with a 4-inch base and 2-inch surface needs roughly 18 tons total. That’s enough for a single-axle delivery in many regions.

 

Budgeting a Gravel Driveway Refresh

Existing gravel driveways lose material to ruts, dust, and displacement every year. A refresh means adding 1 to 2 inches of surface gravel, not rebuilding the base. Enter your driveway dimensions, set the base depth to zero, and add the surface depth you need. The cost figure gives you a realistic number to budget for. A 600 sq ft driveway topped with 2 inches of #57 stone takes about 8 tons.

 

Comparing Gravel Against Asphalt or Concrete

The calculator outputs a total cost that you can compare against other driveway materials. Gravel typically runs $1 to $3 per square foot installed, asphalt $3 to $7, and concrete $5 to $10. If your gravel estimate comes in at $2,200 for a 1,000 sq ft driveway, you know you’re saving $2,000 or more against asphalt. The comparison isn’t just upfront cost, gravel needs more maintenance, but it lasts decades if maintained.

 

Flow diagram showing how to use the calculator differently for a new driveway versus a gravel refresh.

 

Frequently Asked Questions

How much gravel do I need for a driveway?

Measure the length and width in feet, multiply by the depth in feet, then multiply by the stone’s density. For a 50 ft × 12 ft driveway with a 4-inch base and 2-inch surface, you’ll need roughly 20 tons of gravel total. Add 10% waste and you’re ordering about 22 tons. The calculator handles this in one step.

 

How deep should a gravel driveway be?

Four to six inches of base is standard for residential driveways on firm ground. Go to 8 or 10 inches if the soil is soft or you’re parking heavy vehicles. Surface gravel adds another 2 to 3 inches on top. Total depth for a typical homeowner driveway lands around 6 to 9 inches.

 

What’s the cheapest gravel for a driveway?

Recycled concrete (RCA) and quarry process (crusher run) are usually the most affordable options at $15 to $25 per ton in many US regions. Decorative stones like river rock and Mexican beach pebble run $50 to $100 per ton. For a budget driveway, crusher run as both base and surface is the cheapest approach that still performs.

 

How many tons of gravel in a cubic yard?

It depends on the stone. Crusher run weighs about 1.4 to 1.5 US tons per cubic yard. Washed #57 stone is heavier at roughly 1.6 to 1.7 tons per cubic yard. Pea gravel is lighter at 1.2 to 1.4 tons per cubic yard. The calculator uses density values to convert between volume and weight, so you don’t need to do this manually.

 

Can I put gravel over an existing gravel driveway?

Yes, if the existing driveway is structurally sound. Rake out ruts, fill any potholes with crusher run, compact, then add 1 to 2 inches of new surface gravel. If the base has failed deep ruts, soft spots, standing water, you’re better off rebuilding. A top-up only works when the base is still doing its job.

 

How much does a gravel driveway cost?

Material runs $1 to $3 per square foot for gravel, or $15 to $75 per ton depending on stone type and region. A 600 sq ft driveway with a proper base and surface costs $600 to $1,800 in materials. Delivery adds $50 to $150 per truckload. Installed costs run $2 to $5 per square foot if you hire a contractor.

 

Does a gravel driveway need a weed barrier?

A geotextile fabric under the base course helps on soft ground, but it’s not a weed barrier in the garden sense. Weeds come from seeds blowing in and germinating in the gravel. Fabric slows that, but regular maintenance and a good crown for drainage matter more. Some installers skip fabric on firm, well-draining subgrade.

 

How long does a gravel driveway last?

A properly built gravel driveway can last 50 to 100 years with regular maintenance. The base layer doesn’t degrade, it’s the surface that needs refreshing every few years. Budget for adding 1 to 2 inches of new gravel every 3 to 5 years, depending on traffic and climate.

Disclaimer

This calculator provides material estimates for planning purposes. Actual gravel requirements depend on site conditions, compaction methods, and supplier-specific material densities. Verify quantities with your supplier before ordering. The tool does not account for slope, drainage, soil bearing capacity, or geotextile requirements, those need a site visit or a conversation with a contractor.

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