Multiply driveway length × width in feet by depth in feet, divide by 27 for cubic yards, then multiply by 1.55 for tons of crusher run. A 50 × 10 ft driveway at 6 inches deep needs about 9.3 cubic yards, or 14.4 tons — order around 16.5 tons with 15% for compaction.
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Order – tons (includes your waste allowance) so compaction and spillage don’t leave you short.
Driveway Stone Calculator Guide
Choosing driveway stone is a grade decision before it is a quantity decision. Every quarry stocks a wall of options, but a driveway only asks two questions of its stone: can the layer carry a vehicle without rutting, and can the surface shed rain without turning to soup? Different grades answer different halves of that, which is why the best driveways are built from two of them.
This calculator converts your dimensions into tons for whichever grade you select, defaulting to crusher run at 1.55 tons per cubic yard with a 15% compaction allowance built in. Run it once per layer if you are building the classic two-grade stack.
Which Stone Grade Goes Where on a Driveway?
| Role | Grade | Tons per yd³ | Typical layer | 1 ton covers |
|---|---|---|---|---|
| Structural base | Crusher run | 1.55 | 4 in compacted | 52 sq ft |
| Surface course | #57 stone | 1.45 | 2 in | 112 sq ft |
| Tighter surface | #67 stone | 1.45 | 2 in | 112 sq ft |
| Premium base | Limestone crusher run | 1.55 | 4 in compacted | 52 sq ft |
| Budget base | Crushed concrete | 1.35 | 4 in compacted | 60 sq ft |
The logic: crusher run’s fines lock under a compactor into a rigid platform, but those same fines pump to the surface as mud in prolonged rain. Washed #57 sheds water beautifully, but with no fines it never locks, so on its own it ruts and scatters. Stacked — crusher run below, #57 above — each grade covers the other’s weakness.
Ordering and Placing Driveway Stone
Order the base with the full 15% allowance — compaction consumes real volume, and a base that finishes thin fails first at the edges. The surface course can run a leaner 10%. On a fresh build, strip organics down to firm subgrade before any stone goes in; stone over topsoil is a rut with a delivery date.
Spread the base in 2-inch lifts and compact each pass with a plate compactor or roller, keeping a slight crown so water runs to the edges rather than down the wheel tracks. Tip the surface stone, rake to an even 2 inches, and let traffic do the final seating.
This tool sizes the stone itself; for the full project — layer stack, excavation, fabric, and budget in one pass — use the gravel driveway calculator. If you have settled on the classic base grade, the crusher run calculator goes deeper on that material.
Frequently Asked Questions
What is the best stone for a driveway?
Use two grades: crusher run as the compacted structural base, and washed #57 stone as the surface course. Crusher run alone works on a budget, but its fines get muddy in rain, while #57 alone ruts because it never locks together.
How many tons of stone does a driveway need?
A single-car 50 × 10 ft driveway at 6 inches takes roughly 14–17 tons including compaction allowance. As a shortcut, one ton of crusher run covers about 52 square feet at 4 inches, and one ton of #57 covers about 112 square feet at 2 inches.
Is crushed concrete good for driveways?
Yes — recycled crushed concrete compacts much like limestone crusher run, weighs a lighter 1.35 tons per cubic yard, and usually costs the least per ton. Expect a gray, slightly dusty finish rather than the cleaner look of virgin stone.
Why add 15% extra stone for a driveway?
Compaction knocks a loose-tipped layer down by roughly 10–15%, and some material is always lost to grading and edge spill. Ordering 15% over the calculated volume means the compacted driveway finishes at the depth you planned, not under it.