How Much Decomposed Granite 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 3 inches that is 1.4 tons of decomposed granite.
Volume and tonnage calculator →The math
- Area: 113.1 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic yards: 113.1 × 0.250 ÷ 27 = 1.05 yd³.
- Tons: × about 1.35 tons per yard = 1.4 tons.
The gravel calculator does this for any size.
Related: How Much Gravel for a 12 Foot Circle?
Decomposed granite needed by depth
| Depth | Cubic yards | Tons of decomposed granite | 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 Decomposed Granite for a 6 Foot Circle?
Getting it delivered
Small dump trucks commonly carry around 5 to 10 tons and tri-axles more, but loads vary by truck and state, so ask the yard what fits in one trip. Decomposed granite packs into a firm, natural path when wetted and compacted in thin lifts. The scale ticket is the real weight; tons per yard here is a planning figure.
Planning the cost
Quarries and landscape suppliers set their own prices, and they change by region and season. Get the price per ton, the delivery fee and the minimum order. If two products will both work, compare cost per square foot at your depth rather than cost per ton.
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 decomposed granite for a 12 ft circle?
About 1.4 tons at 3 inches deep.
How many square feet is a 12 foot circle?
About 113.1 square feet.
How many tons of decomposed granite 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 Pea Gravel for a 12 Foot Circle?
- How Much River Rock for a 12 Foot Circle?
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