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How Many Bags of River Rock Do I Need?

Enter your area, the depth and the bag size printed on the bag. You get the number of bags of river rock, the volume and the weight.

ft
ft
ft
sq ft
in
Earthstone lists 2 to 4 inches for decorative river rock beds.
tons
Change it to your supplier's figure.
%
Rochester Concrete Products' install guide adds 10% for compaction and uneven ground.
cu ft
Read the bag size off the label.
$

Enter your numbers and press Calculate.

Bags per cubic yard

Bags = cubic feet needed ÷ cubic feet per bag, rounded up.

Bag sizeBags per cubic yardBags for 10 × 10 ft at 3 in
0.5 cu ft5450
0.75 cu ft3634
1 cu ft2725
1.5 cu ft1817
2 cu ft1413
3 cu ft99

Quikrete's 50 lb all-purpose gravel bag holds about 0.5 cubic feet, so 54 of them make one cubic yard.

Weight to carry

Every cubic foot of river rock weighs about 104 lb. Check your vehicle's payload before you load a trip's worth of bags.

Common questions

How many 0.5 cu ft bags of river rock make a yard?

54 bags, because a cubic yard is 27 cubic feet.

How many bags of river rock cover 100 sq ft?

At 3 inches deep you need 25.0 cubic feet, which is 50 bags of 0.5 cu ft or 13 bags of 2 cu ft.

Related calculators

Sources

  • https://www.doitbest.com/product/276837/
  • https://homeguide.com/costs/gravel-prices