River Rock Calculator
Find how much river rock to buy for a decorative bed, dry creek or border. Enter your area and depth to get cubic yards, tons and bags. Nothing is uploaded — it all runs in your browser.
You'll need
River rock is sold by the cubic yard, ton or bag. Weight assumes ~1.7 t/m³; add a waste % for spillage.
How to use the river rock calculator
- Measure your area Length × width for a rectangle, or the diameter for a circle.
- Set the depth How thick a layer you're laying.
- Read the result Cubic yards for bulk, tons for weight-priced material, or bags for a small job — add a waste % for spillage.
River Rock Calculator FAQ
How much river rock do I need?
Multiply the area by the depth for the volume, then convert to cubic yards or tons. Enter your dimensions above.
How deep should river rock be?
About 2–3 inches for decorative cover; deeper for a dry creek bed. Larger rock needs a bit more depth to cover the ground.
How much does river rock weigh?
Around 1.4–1.5 tons per cubic yard, similar to gravel.