How Much Does 12 Tons of Crushed Stone Cover?
How much does 12 tons of crushed stone cover depends on how deep you spread it. At about 1.4 tons per cubic yard, 12 tons is roughly 8.6 cubic yards. Spread 4 inches deep, that covers about 694 square feet. Halve the depth and you roughly double the area.
Volume and tonnage calculator →How the coverage is figured
- Tons to cubic yards: 12 ÷ 1.4 = 8.6 yd³.
- Cubic yards to cubic feet: × 27 = 231 cu ft.
- Divide by depth in feet: at 4 inches (0.333 ft), 231 ÷ 0.333 = 694 sq ft.
Coverage of 12 tons at different depths
| Depth | Square feet covered | Square yards |
|---|---|---|
| 2 in | 1,389 | 154 |
| 3 in | 926 | 103 |
| 4 in | 694 | 77 |
| 6 in | 463 | 51 |
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. Weight runs about 1.35 to 1.5 tons per cubic yard, so treat the table as a planning range rather than an exact figure.
What 12 tons looks like on site
12 tons is about one tandem-axle truck load, though legal limits vary by truck and state. Spread from the pile with a loader, skid steer or wheelbarrow, then rake to depth before compacting if the material calls for it.
- Check depth as you go. Stakes marked at the target depth help keep the spread even.
- Expect some loss. Compaction and uneven ground use more than the flat-math figure. Keep about 10 percent in reserve.
- Ask about moisture. Wet material weighs more, so a ton of it covers less.
To run your own numbers, use the volume and tonnage calculator.
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 12x24 area at 3 inches takes about 3.7 tons.
- Weight used here: about 1.4 tons per cubic yard.
Where estimates go wrong
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
- 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 cubic yards is 12 tons of crushed stone?
About 8.6 cubic yards at 1.4 tons per yard.
How many square feet does 12 tons of crushed stone cover at 4 inches?
About 694 square feet.
How many square feet does 12 tons cover at 2 inches?
About 1,389 square feet.
How much does a yard of crushed stone weigh?
About 1.35 to 1.5 tons.
Will 12 tons fit in one truck?
It depends on the truck. Single-axle dump trucks often carry under 10 tons and tandems around 13 to 16; your supplier will know their limits.
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 10 Tons of Crushed Stone Cover?
- How Much Does 11 Tons of Crushed Stone Cover?
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