How Much Crushed Stone for a 22x90 Driveway?

How much crushed stone for a 22x90 driveway is a quick volume problem. 1,980 square feet at 4 inches comes to 24.44 cubic yards. Crushed stone usually weighs about 1.35 to 1.5 tons per cubic yard, so plan on roughly 34.2 tons.

Volume and tonnage calculator →

The math for a 22x90 driveway

Area: 22 × 90 = 1,980 sq ft.
Depth in feet: 4 ÷ 12 = 0.333 ft.
Cubic feet: 1,980 × 0.333 = 660.0 cu ft.
Cubic yards: ÷ 27 = 24.44 yd³.
Tons: × 1.4 = 34.2 tons.

The volume and tonnage calculator does this for any size.

Crushed stone needed by depth

Depth	Cubic yards	Tons (approx.)	Tons +10%
2 in	12.22	17.1	18.8
3 in	18.33	25.7	28.2
4 in	24.44	34.2	37.6
6 in	36.67	51.3	56.5

About crushed stone

Crushed stone has fractured faces, so the pieces interlock when compacted. That is why it holds a driveway or pad shape better than round stone of the same size. Ask your supplier for their own tons-per-yard figure, since stone source and moisture shift it.

Preparing the driveway

Strip sod and soft topsoil, grade for drainage and compact the subgrade before any stone goes down. Gravel drives last longer with a compacted base layer under the top stone and a slight crown so water runs off. For car and truck traffic, the depths in the table above are a reasonable starting range.

Ordering tips

Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
Delivery size. 37.6 tons may take more than one typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
Bulk vs bags. At this size bulk delivery is usually the practical choice.
Where it drops. Have the truck dump as close to the driveway as firm ground allows.

Good and poor uses for crushed stone

Best suited to:

Driveway top courses and parking pads
Shed and hot tub bases
Backfill behind walls when a clean size is used

Think twice for:

Barefoot areas, since angular stone is rough
Play areas
Places that need a smooth rolling surface for wheels

Quick reference numbers

Per inch over 100 sq ft: about 0.43 tons of crushed stone (0.31 cubic yards).
Per inch over 1,000 sq ft: about 4.3 tons.
Another size for comparison: a 14x28 area at 2 inches takes about 3.4 tons.
Weight used here: about 1.4 tons per cubic yard.

Common estimating mistakes

Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.

Questions people ask

How many tons of crushed stone for a 22x90 driveway?

About 34.2 tons at 4 inches deep, or 37.6 tons with 10 percent extra.

How many cubic yards is a 22x90 driveway at 4 inches?

About 24.44 cubic yards.

How much does a cubic yard of crushed stone weigh?

Usually around 1.35 to 1.5 tons, depending on stone size, fines and moisture.

How deep should crushed stone be for a driveway?

The table above shows 2 to 6 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 22x90?

1,980 square feet.

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