AsphaltTons.com — asphalt tonnage calculator

Bags of Crushed Stone for a 6x25 Walkway

How many bags of crushed stone 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 crushed stone in 50-pound bags instead, figure about 78 bags, since crushed stone weighs roughly 104 pounds per cubic foot.

Volume and tonnage calculator →

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. At this size, a bulk delivery usually beats a cart full of bags once you count trips. Compare the bag price × 75 against a bulk quote for 2.1 tons delivered.

About crushed stone

Crushed stone has fractured faces, so the pieces interlock when compacted. That is why it holds a driveway or pad shape better than round stone of the same size.

Laying it down 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 tamp or wet and 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.

Where crushed stone fits

Works well for:

  • Driveway top courses and parking pads
  • Shed and hot tub bases
  • Backfill behind walls when a clean size is used

Think twice for:

  • Barefoot areas, since angular stone is rough
  • Play areas
  • Places that need a smooth rolling surface for wheels

Quick reference numbers

  • Per inch over 100 sq ft: about 0.43 tons of crushed stone (0.31 cubic yards).
  • Per inch over 1,000 sq ft: about 4.3 tons.
  • Another size for comparison: a 15x30 area at 3 inches takes about 5.8 tons.
  • Weight used here: about 1.4 tons per cubic yard.

Where estimates go wrong

  • Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
  • Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
  • Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
  • Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.

Questions people ask

How many bags of crushed stone for a 6x25 walkway?

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

How many 50 lb bags of crushed stone 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

Open the volume and tonnage calculator → Asphalt tonnage calculator →

As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.