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How Much Gravel for a 30 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 30-foot circle is about 706.9 square feet; at 4 inches that is 12.2 tons of gravel.

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The math

  1. Area: 706.9 sq ft.
  2. Depth in feet: 4 ÷ 12 = 0.333 ft.
  3. Cubic yards: 706.9 × 0.333 ÷ 27 = 8.73 yd³.
  4. Tons: × about 1.4 tons per yard = 12.2 tons.

The gravel calculator does this for any size.

Gravel needed by depth

DepthCubic yardsTons of gravelTons +10%
2 in4.366.16.7
3 in6.549.210.1
4 in8.7312.213.4
6 in13.0918.320.2

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. For a fire pit area, keep combustibles well away and check local burn rules.

Ordering and delivery

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. Gravel is a broad label, so confirm whether the yard means crushed or rounded stone and whether it carries fines. Round up by about 10 percent for compaction and uneven ground.

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

Stone is usually priced per ton or per cubic yard, and delivery is often a separate charge based on distance. A full truckload can cost less per ton than a partial one, so it can pay to combine projects. Ask whether the quote includes tax, delivery and any small-load fee before you compare yards.

Questions people ask

How many tons of gravel for a 30 ft circle?

About 12.2 tons at 4 inches deep.

How many square feet is a 30 foot circle?

About 706.9 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.

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