How Much #57 Stone for an 18 Foot Circle?
How much #57 stone for an 18 foot circle: about 4.2 tons at 4 inches deep. A circle 18 feet across covers about 254.5 square feet (3.1416 × 9²).
Volume and tonnage calculator →The math
- Area: 254.5 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic yards: 254.5 × 0.333 ÷ 27 = 3.14 yd³.
- Tons: × about 1.35 tons per yard = 4.2 tons.
The crushed stone calculator does this for any size.
Related: How Much Gravel for an 18 Foot Circle?
#57 stone needed by depth
| Depth | Cubic yards | Tons of #57 stone | Tons +10% |
|---|---|---|---|
| 2 in | 1.57 | 2.1 | 2.3 |
| 3 in | 2.36 | 3.2 | 3.5 |
| 4 in | 3.14 | 4.2 | 4.7 |
| 6 in | 4.71 | 6.4 | 7.0 |
Where round stone areas work
Circles show up around fire pits, under swing sets, around trees and as seating areas. Steel or paver edging keeps the round shape crisp and holds loose stone in place. Rake the stone level after spreading and add a thin top-up after the first season.
Related: How Much Pea Gravel for an 18 Foot Circle?
Buying the stone
Most quarries and landscape yards deliver by the ton; ask whether there is a minimum and a delivery fee, and where the driver can dump without damaging your lawn. #57 is a washed stone of roughly 1/2 to 1 inch with few fines; it drains fast but stays a little loose on its own. Round up by about 10 percent for compaction and uneven ground.
Common mistakes
People often forget that compaction reduces volume, so they come up short. Others order clean, round stone where a packable crushed stone with fines would have stayed put. Finally, dumping the whole load in one pile far from the work area adds hours of wheelbarrow trips.
Tools for the job
For anything bigger than a small path, rent a plate compactor; hand tampers cannot match it. A wheelbarrow, shovels, a hard rake and stakes with string are the rest of the kit. Wet the stone lightly before compacting so it binds.
Questions people ask
How many tons of #57 stone for an 18 ft circle?
About 4.2 tons at 4 inches deep.
How many square feet is an 18 foot circle?
About 254.5 square feet.
How many tons of #57 stone are in a cubic yard?
Roughly 1.35 tons for planning, but suppliers vary with stone size and moisture.
Should I put landscape fabric under the stone?
On soft or clay soil, a woven geotextile keeps stone from sinking into the dirt and makes the layer last longer.
Related guides
- Gravel for a Fire Pit Area: Best Types and Depth
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- Crushed Stone vs Gravel: Differences and Best Uses
- Geotextile Fabric for Driveways: Woven vs Nonwoven and How Much You Need
- Compacting a Driveway Gravel Base in Lifts
- How Much Decomposed Granite for an 18 Foot Circle?
- How Much Crushed Stone for an 18 Foot Circle?
As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.