How Much #57 Stone for a 20 Foot Circle?
How much #57 stone for a 20 foot circle: about 5.2 tons at 4 inches deep. A circle 20 feet across covers about 314.2 square feet (3.1416 × 10²).
Volume and tonnage calculator →The math
- Area: 314.2 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic yards: 314.2 × 0.333 ÷ 27 = 3.88 yd³.
- Tons: × about 1.35 tons per yard = 5.2 tons.
The crushed stone calculator does this for any size.
Related: How Much Gravel for a 20 Foot Circle?
#57 stone needed by depth
| Depth | Cubic yards | Tons of #57 stone | Tons +10% |
|---|---|---|---|
| 2 in | 1.94 | 2.6 | 2.9 |
| 3 in | 2.91 | 3.9 | 4.3 |
| 4 in | 3.88 | 5.2 | 5.8 |
| 6 in | 5.82 | 7.9 | 8.6 |
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 a 20 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. #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. Ask your supplier for their own tons-per-yard number, since stone source and moisture change it.
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
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.
Questions people ask
How many tons of #57 stone for a 20 ft circle?
About 5.2 tons at 4 inches deep.
How many square feet is a 20 foot circle?
About 314.2 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 20 Foot Circle?
- How Much Crushed Stone for a 20 Foot Circle?
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