Building & DIY

River Rock Calculator (Coverage & Tonnage)

Figure out how much river rock you need from the length, width, and depth of the area. Pick a stone grade, add a waste factor, and you get cubic yards plus weight in US and metric tons.

How to use
  1. Enter the area length, width, and depth.
  2. Pick a stone grade from pea gravel to boulders.
  3. Add a waste factor.
Depth (in)
River rock needed
1.22 yd³

includes 10% waste · covers 120 ft²

Weight (US tons)
1.65 t
Cubic feet
33.0 ft³
Cubic metres
0.933 m³
Estimates only, allow for waste and confirm against local building codes and supplier specs.
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Common questions

How deep should river rock be?

For ground cover, 2 to 3 inches is typical, while larger stones need more depth to fully cover the soil.

How much does river rock weigh?

River rock weighs roughly 1.2 to 1.4 US tons per cubic yard, depending on the stone size and moisture.

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