How Much Gravel for a 20 Foot Circle?
How much gravel for a 20 foot circle: about 5.4 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 1.4 tons per yard = 5.4 tons.
The gravel calculator does this for any size.
Related: How Much Pea Gravel for a 20 Foot Circle?
Gravel needed by depth
| Depth | Cubic yards | Tons of gravel | Tons +10% |
|---|---|---|---|
| 2 in | 1.94 | 2.7 | 3.0 |
| 3 in | 2.91 | 4.1 | 4.5 |
| 4 in | 3.88 | 5.4 | 6.0 |
| 6 in | 5.82 | 8.1 | 9.0 |
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. Rake the stone level after spreading and add a thin top-up after the first season.
Related: How Much River Rock 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. Gravel is a broad label, so confirm whether the yard means crushed or rounded stone and whether it carries fines. 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
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 gravel for a 20 ft circle?
About 5.4 tons at 4 inches deep.
How many square feet is a 20 foot circle?
About 314.2 square feet.
How many tons of gravel are in a cubic yard?
Roughly 1.4 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 Crushed Stone for a 20 Foot Circle?
- How Much #57 Stone for a 20 Foot Circle?
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