How Much #57 Stone for a 12 Foot Circle?
Round areas such as fire pit patios, tree rings and seating circles use less stone than a square of the same width. A 12-foot circle is about 113.1 square feet; at 4 inches that is 1.9 tons of #57 stone.
Volume and tonnage calculator →The math
- Area: 113.1 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic yards: 113.1 × 0.333 ÷ 27 = 1.40 yd³.
- Tons: × about 1.35 tons per yard = 1.9 tons.
The crushed stone calculator does this for any size.
Related: How Much Gravel for a 12 Foot Circle?
#57 stone needed by depth
| Depth | Cubic yards | Tons of #57 stone | Tons +10% |
|---|---|---|---|
| 2 in | 0.70 | 0.9 | 1.0 |
| 3 in | 1.05 | 1.4 | 1.6 |
| 4 in | 1.40 | 1.9 | 2.1 |
| 6 in | 2.09 | 2.8 | 3.1 |
Where round stone areas work
A round gravel area is easy to lay out with a stake and string at the center. Set flexible edging along the line and lay fabric inside before the stone goes in. Do not pile stone against tree trunks; leave a gap at the base.
Related: How Much Pea Gravel for a 12 Foot Circle?
Buying the stone
If you haul it yourself, a typical half-ton pickup should carry only about half a cubic yard of stone, well under what the bed looks like it can hold. #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. The scale ticket is the real weight; tons per yard here is a planning figure.
Common mistakes
The most frequent problem is ordering for the finished depth without allowing for compaction, which can shrink a loose layer by 10 to 20 percent. Another is skipping fabric on soft soil and watching the stone vanish into the mud over the first wet season. Spreading everything in one thick layer instead of compacted lifts also leaves a soft, rutted surface.
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 a 12 ft circle?
About 1.9 tons at 4 inches deep.
How many square feet is a 12 foot circle?
About 113.1 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.
Do I need to compact it?
Yes for anything that carries weight. Compact in lifts of a few inches with a plate compactor.
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 a 12 Foot Circle?
- How Much Crushed Stone for a 12 Foot Circle?
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