🪨
River Rock Calculator
Find how much decorative river rock you need for a bed, border or dry creek, in cubic yards, tons and bags.
Two to three inches deep is standard for ground cover.
Enter your measurements
Area shape
Length (ft)
Width (ft)
Depth / thickness (in)
How many areas like this?
Extra for waste / spillage (%)
Bag size
River Rock you need
0.62cubic yards
16.7 ft³ · 100 ft² at 2.0" deep
💡 River rock is heavy, for anything bigger than a small bed, bulk delivery by the ton beats bags.
35
0.5 ft³ bags
incl. waste
$210
Est. material cost
@ ~$6/bag
0.83 tons
Weight
if bulk
- Cubic feet needed
- 16.7 ft³
- Cubic yards needed
- 0.62 yd³
- Order with 5% waste
- 0.65 yd³
- 0.5 ft³ bags to buy
- 35
- Bulk weight
- 0.83 tons
Frequently asked questions
How deep should river rock be?
About 2–3 inches for decorative ground cover so the soil underneath stays hidden and weeds are suppressed.