Gravel Driveway Calculator — Tons, Yards & Cost

Length × width × depth in — cubic yards, tons, truckloads and dollars out.

Quick answer: Enter driveway length, width and depth to get cubic yards, tons at crushed-stone density, truckload equivalents and total cost before you call the quarry.

📏 Build it in layers: 3–4 in base of large crushed stone, then 2–3 in of finer top stone, crowned in the middle so water sheds. Fabric under soft soil stops stone from sinking.

How to use

  1. Measure the driveway: length × width, or a direct area, in ft or m.
  2. Set the depth — 4–6 inches compacted for cars, more for trucks and RVs.
  3. Pick the stone type and keep the compaction allowance on for loose orders.
  4. Enter your price per ton for the total cost and truckload count.

About this tool

A gravel driveway fails from thin stone and bad edges, but the order ticket fails from bad math — this gravel driveway calculator handles the tonnage so you can handle the base. Enter length, width and depth (4 to 6 inches compacted is the working minimum for cars), pick your material — crushed stone at about 1.4 tons per cubic yard, crushed limestone, pea gravel or recycled concrete — and get net volume, an optional 20 percent compaction allowance that matches what loose stone actually does under a roller, the tonnage to order, cubic meters, and how many 10-yard dump-truck loads the job represents. Enter your quarry or delivery price per ton and the total cost lands right next to it, which is usually the moment people reconsider the extra 50 feet of driveway. Order in one full delivery; partial loads cost nearly the same to haul. All math is local to your browser.

FAQ

How deep should a gravel driveway be?
Plan 4–6 inches of compacted stone for cars and light trucks, built as two layers: a 3–4 inch base of larger crushed stone plus a 2–3 inch top of finer gravel. Over soft clay or for heavy vehicles, go 8–12 inches in lifts over landscape fabric — thin driveways are the ones that rut.
How many tons of gravel per cubic yard?
Crushed stone runs about 1.4–1.5 tons per cubic yard; this calculator defaults to 1.4 for crushed stone and lets you pick limestone, pea gravel or a custom density. Moisture and grading swing real loads by several percent, which is what the compaction allowance covers.
How much does a gravel driveway cost?
Crushed stone typically runs $25–$50 per ton delivered in most US markets, so a 20 × 40 ft driveway at 6 inches — roughly 15 tons — lands around $400–$750 in material. Grading, fabric and edging add labor. enter your local price per ton here for the honest number.
How much area does a ton of gravel cover?
At 4 inches deep, one ton covers about 40–45 sq ft; at 2 inches about 80–90 sq ft. Working backwards, every 100 sq ft of 4-inch driveway needs roughly 2.5 tons. The calculator shows coverage for your exact dimensions instead.
Why add a compaction allowance?
Loose stone compacts 20–25% when rolled and driven on, so a driveway spread at 6 inches of loose material settles to under 5. Ordering with the 20% allowance built in keeps the finished grade at the depth you actually designed for.

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