MaterialSum

Driveway Gravel Calculator

A durable gravel driveway is built in layers. Enter each layer's depth and material to get per-layer and total quantities.

Dimensions
ft
ft
Layers
in
in
in
Optional Cost (per ton)
Enter your measurements above to see results.

How to use the Driveway Gravel Calculator

  1. Enter driveway length and width (or the area you already know).
  2. Typical layers: 4 in crushed-stone base, 2 in middle, 1–2 in surface (pea gravel, crusher run, or screenings).
  3. Set each layer's depth to 0 to skip it — a light-duty driveway may only need base + surface.
  4. Enter per-ton prices to see a total cost estimate.

Formula & methodology

Each layer: Volume = Area × depth; Weight = Volume × material density (~96–105 lb/ft³ depending on stone). Total = sum of layers.

Example

A 40 ft × 12 ft driveway with 4 in base + 2 in middle + 1 in pea gravel surface: 160 + 80 + 40 = 280 ft³ ≈ 10.4 cu yd total, roughly 14 tons.

Related calculators

Gravel CalculatorMeasure your area, choose a depth, and instantly see how much gravel to order in cubic yards, tons, or bags.Pea Gravel CalculatorPea gravel is sold by volume and weight — get both numbers, plus bag counts, before you order.Paver CalculatorEnter your patio or path dimensions and paver size to get the number of pavers — plus optional bedding sand and gravel base quantities.Concrete CalculatorEnter your project dimensions to find out how much concrete you need — in cubic yards, cubic meters, or bags of Quikrete-style mix.

FAQ

How deep should a gravel driveway be?

7–10 inches total after compaction for cars: 4 in base, 2–3 in middle, 1–2 in surface. Heavier vehicles need a thicker base.

What is the best gravel for a driveway surface?

Crusher run (quarry process) with fines compacts into a firm surface; pea gravel looks nicer but rolls and ruts. Many driveways use crusher run with a thin pea-gravel topping.

Do I need fabric under a gravel driveway?

Geotextile fabric is strongly recommended on soft or clay soil — it stops the stone from sinking into the mud and roughly doubles driveway life.

How many tons of gravel for a driveway?

Multiply area (ft²) × depth (in) ÷ 216 × 1.35 for tons. Or just use this calculator with layers — it is more accurate.