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Bags of Pea Gravel for a 6x25 Walkway

How many bags of pea gravel for a 6x25 walkway: at 3 inches deep you need about 37.5 cubic feet, which is 75 bags of the common 0.5 cubic foot size. If your store sells pea gravel in 50-pound bags instead, figure about 78 bags, since pea gravel weighs roughly 104 pounds per cubic foot.

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Bag count by depth

DepthCubic feet0.5 cu ft bags50 lb bags (approx.)
1 in12.52526
2 in25.05052
3 in37.57578
4 in50.0100104

How to figure it

  1. Area: 6 × 25 = 150 sq ft.
  2. Volume: 150 × (3 ÷ 12) = 37.5 cu ft.
  3. Bags: 37.5 ÷ 0.5 = 75 bags (round up).

Bags or bulk?

A cubic yard is 27 cubic feet, so 37.5 cubic feet is 1.39 yards, about 1.9 tons. Past about a yard, bulk is usually less work and often less money. Compare the bag price × 75 against a bulk quote for 2.1 tons delivered.

About pea gravel

Pea gravel is small, rounded stone, usually around 3/8 inch. It is comfortable to walk on and drains well, but it shifts under car tires and needs a solid edge to stay put.

Before you spread for a walkway

  • Dig and level. Remove sod and set the base slightly below the surrounding grade.
  • Edge it. Steel, plastic or stone edging keeps material in place.
  • Spread in layers. Rake to depth, then rake smooth; rounded stone will not compact.
  • Buy a few extra. Grab 5 to 10 percent more bags for settling and touch-ups.

The volume and tonnage calculator handles other sizes and depths.

When to choose pea gravel

Works well for:

  • Patios, walkways and dog runs
  • Play areas with proper depth and edging
  • Drainage around foundations when sized properly

Less suited to:

  • Driveways and steep paths, where it rolls and ruts
  • Under pavers as a base
  • Areas without edging

Quick reference numbers

  • Per inch over 100 sq ft: about 0.43 tons of pea gravel (0.31 cubic yards).
  • Per inch over 1,000 sq ft: about 4.3 tons.
  • Another size for comparison: a 12x24 area at 4 inches takes about 5.0 tons.
  • Weight used here: about 1.4 tons per cubic yard.

Where estimates go wrong

  • Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
  • Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
  • Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
  • Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.

Questions people ask

How many bags of pea gravel for a 6x25 walkway?

About 75 bags of 0.5 cubic feet at 3 inches deep.

How many 50 lb bags of pea gravel for 6x25?

About 78 bags at 3 inches.

How many 0.5 cubic foot bags are in a cubic yard?

54 bags.

How many cubic feet is a 6x25 walkway at 3 inches?

About 37.5 cubic feet.

When does bulk make more sense?

Usually once the job passes about a cubic yard, or when you would need more than a few car trips.

Related guides

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