How Much Crushed Stone for a 8x12 Patio?
How much crushed stone for a 8x12 patio: at 3 inches deep you need about 0.89 cubic yards, which is roughly 1.2 tons at 1.4 tons per yard. The patio covers 96 square feet, so every inch of depth adds about 0.30 yards.
Volume and tonnage calculator →The math for a 8x12 patio
- Area: 8 × 12 = 96 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic feet: 96 × 0.250 = 24.0 cu ft.
- Cubic yards: ÷ 27 = 0.89 yd³.
- Tons: × 1.4 = 1.2 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 | 0.59 | 0.8 | 0.9 |
| 3 in | 0.89 | 1.2 | 1.4 |
| 4 in | 1.19 | 1.7 | 1.8 |
| 6 in | 1.78 | 2.5 | 2.7 |
About crushed stone
Most quarries sell crushed stone by a size number or a screen size. Clean crushed stone drains well; stone with fines packs harder but sheds water more slowly. If the yard sells by the cubic yard instead of the ton, use the cubic-yard column directly.
Preparing the patio
Remove sod, level the area with a slight slope away from the house, and lay landscape fabric if weeds are a concern. Edging keeps loose material inside the patio footprint. For foot traffic and furniture, 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. 1.4 tons fits in a single 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 about 1.2 tons this job is small enough that bagged material could work; a 0.5 cubic foot bag holds about 1/54 of a yard, so compare the bag count with a bulk minimum.
- Where it drops. Have the truck dump as close to the patio as firm ground allows.
When to choose 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 20x25 area at 3 inches takes about 6.5 tons.
- Weight used here: about 1.4 tons per cubic yard.
Mistakes that throw off the order
- 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.
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
- Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
Questions people ask
How many tons of crushed stone for a 8x12 patio?
About 1.2 tons at 3 inches deep, or 1.4 tons with 10 percent extra.
How many cubic yards is a 8x12 patio at 3 inches?
About 0.89 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 patio?
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 8x12?
96 square feet.
Related guides
- How Much Does a Ton of Crushed Stone Cover?
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Many Tons of Gravel in a Dump Truck? Loads and Coverage
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much Crushed Stone for a 16x24 Shed Base?
- How Much Crushed Stone for a 8x10 Patio?
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