How Much #57 Stone for 800 Square Feet?
How much #57 stone for 800 square feet depends on depth. At 4 inches you need about 9.88 cubic yards, roughly 13.3 tons at 1.35 tons per yard. Each inch of depth over 800 square feet adds about 2.47 yards.
Volume and tonnage calculator →#57 stone for 800 sq ft by depth
| Depth | Cubic yards | Tons | Tons +10% |
|---|---|---|---|
| 2 in | 4.94 | 6.7 | 7.3 |
| 3 in | 7.41 | 10.0 | 11.0 |
| 4 in | 9.88 | 13.3 | 14.7 |
| 6 in | 14.81 | 20.0 | 22.0 |
Working it out
- 800 sq ft × (4 ÷ 12) ft = 266.7 cubic feet.
- ÷ 27 = 9.88 cubic yards.
- × 1.35 tons per yard = 13.3 tons.
About #57 stone
Since #57 is washed and open-graded, it moves a little underfoot. Many installers put it over a compacted base of a dense-graded stone rather than straight on soil. Most suppliers will quote 1.3 to 1.45 tons per yard for this material.
Ordering checklist
- Measure odd shapes in pieces. Split curves and L-shapes into rectangles and add them.
- Add a margin. About 10 percent covers compaction and low spots.
- Bulk or bags. Bulk delivery is the practical choice here.
- Prep first. Remove sod, compact the subgrade and set edging before the stone arrives.
Use the volume and tonnage calculator for any other size.
When to choose #57 stone
Best suited to:
- French drains and drainage layers
- The top course of a gravel driveway
- Under sheds where water needs to drain away
Think twice for:
- A standalone base, since it does not pack hard without fines
- Paver setting beds
- Walk paths meant for strollers or wheelchairs
Quick reference numbers
- Per inch over 100 sq ft: about 0.42 tons of #57 stone (0.31 cubic yards).
- Per inch over 1,000 sq ft: about 4.2 tons.
- Another size for comparison: a 10x20 area at 4 inches takes about 3.3 tons.
- Weight used here: about 1.35 tons per cubic yard.
Mistakes that throw off the order
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
- Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
- Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
Questions people ask
How many tons of #57 stone for 800 square feet?
About 13.3 tons at 4 inches deep.
How many cubic yards of #57 stone for 800 square feet?
About 9.88 yards at 4 inches.
How much #57 stone for 800 square feet at 2 inches?
About 6.7 tons, or 4.94 cubic yards.
How much does a yard of #57 stone weigh?
About 1.3 to 1.45 tons.
Should I add extra?
Yes, about 10 percent is a common allowance.
Related guides
- Number 57 Stone: Size, Weight, Uses, and Coverage
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much #57 Stone for 600 Square Feet?
- How Much #57 Stone for 750 Square Feet?
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