River Rock Calculator

What is a River Rock Calculator?

A river rock calculator helps you determine the amount of river rock needed for landscaping, gardens, pathways, and other decorative projects. It calculates the volume and weight of river rock based on area, depth, and rock type.

How to Use the River Rock Calculator

1. Select rock type: Choose from 20 different rock types (pea gravel, granite, quartzite, etc.) or enter a custom density.
2. Choose input mode: Enter either length and width of the area, or the total area directly.
3. Set depth: Enter the desired depth of the river rock layer (e.g., 5-10 cm for walkways).
4. Add wastage: Include a wastage percentage (typically 5-10%) to account for spillage.
5. Optional cost: Enter the price per ton or per cubic meter to estimate total cost.

River Rock Volume and Weight Formulas

The calculator uses these formulas to estimate the required materials:

Volume: $V = A \times d \times (1 + w)$ where $A$ is area, $d$ is depth, and $w$ is wastage.

Weight: $W = V \times \rho$ where $\rho$ is the rock density.