How Much River Rock for a 6 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 6-foot circle is about 28.3 square feet; at 3 inches that is 0.4 tons of river rock.
Volume and tonnage calculator →The math
- Area: 28.3 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic yards: 28.3 × 0.250 ÷ 27 = 0.26 yd³.
- Tons: × about 1.35 tons per yard = 0.4 tons.
The gravel calculator does this for any size.
Related: How Much River Rock for an 8 Foot Circle?
River rock needed by depth
| Depth | Cubic yards | Tons of river rock | Tons +10% |
|---|---|---|---|
| 2 in | 0.17 | 0.2 | 0.3 |
| 3 in | 0.26 | 0.4 | 0.4 |
| 4 in | 0.35 | 0.5 | 0.5 |
| 6 in | 0.52 | 0.7 | 0.8 |
Using a circle of stone
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. For a fire pit area, keep combustibles well away and check local burn rules.
Related: How Much River Rock for a 12 Foot Circle?
Buying the stone
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. River rock is smooth and decorative; larger sizes cover less area per ton at the same depth. Ask your supplier for their own tons-per-yard number, since stone source and moisture change it.
Tools for the job
A flat shovel, a steel rake, a wheelbarrow and a rented plate compactor cover most residential pads. A landscape rake or the back of a rake levels the top layer, and a long straightedge or a level string shows high and low spots before the final pass.
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.
Questions people ask
How many tons of river rock for a 6 ft circle?
About 0.4 tons at 3 inches deep.
How many square feet is a 6 foot circle?
About 28.3 square feet.
How many tons of river rock 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 Pea Gravel for a 6 Foot Circle?
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