How Much #57 Stone for a 18x300 Driveway?
How much #57 stone for a 18x300 driveway: at 4 inches deep you need about 66.67 cubic yards, which is roughly 90.0 tons at 1.35 tons per yard. The driveway covers 5,400 square feet, so every inch of depth adds about 16.67 yards.
Volume and tonnage calculator →The math for a 18x300 driveway
- Area: 18 × 300 = 5,400 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic feet: 5,400 × 0.333 = 1,800.0 cu ft.
- Cubic yards: ÷ 27 = 66.67 yd³.
- Tons: × 1.35 = 90.0 tons.
The volume and tonnage calculator does this for any size.
#57 stone needed by depth
| Depth | Cubic yards | Tons (approx.) | Tons +10% |
|---|---|---|---|
| 2 in | 33.33 | 45.0 | 49.5 |
| 3 in | 50.00 | 67.5 | 74.2 |
| 4 in | 66.67 | 90.0 | 99.0 |
| 6 in | 100.00 | 135.0 | 148.5 |
About #57 stone
#57 stone is a clean crushed stone in roughly the 1/2 to 1 inch range with very few fines. It drains fast, which suits drainage layers and the top of a gravel drive, but it does not pack into a hard crust by itself. 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. 99.0 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.
Where #57 stone fits
Good uses:
- French drains and drainage layers
- The top course of a gravel driveway
- Under sheds where water needs to drain away
Poor fit 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 15x30 area at 4 inches takes about 7.5 tons.
- Weight used here: about 1.35 tons per cubic yard.
Where estimates go wrong
- Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
Questions people ask
How many tons of #57 stone for a 18x300 driveway?
About 90.0 tons at 4 inches deep, or 99.0 tons with 10 percent extra.
How many cubic yards is a 18x300 driveway at 4 inches?
About 66.67 cubic yards.
How much does a cubic yard of #57 stone weigh?
Usually around 1.3 to 1.45 tons, depending on stone size, fines and moisture.
How deep should #57 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 18x300?
5,400 square feet.
Related guides
- Number 57 Stone: Size, Weight, Uses, and Coverage
- 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 #57 Stone for a 18x200 Driveway?
- How Much #57 Stone for a 18x250 Driveway?
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