Free Online Tool

River Rock Calculator — Estimate Decorative Stone

Calculate river rock volume, weight, truck loads, and cost for landscaping, dry creek beds, garden borders, and decorative stone projects.

3
Rock Types
2
Measurement Systems
100%
Free to Use
Instant
Material Estimate

Enter Project Details

Measurement System
Project Shape

Your Results

Ready to Calculate

Enter your project dimensions and click Calculate to see river rock estimates.

Frequently Asked Questions

A river rock calculator estimates the volume, weight, and cost of river rock, creek stone, or decorative pebbles for your landscaping project. It calculates cubic yards, tons, truckloads, and cost based on your area dimensions and depth.
For decorative landscaping, 2–3 inches of river rock is sufficient. For dry creek beds and drainage areas, use 3–4 inches. For paths with foot traffic, 3–4 inches provides good stability. Larger stones may require deeper depths for full coverage.
A cubic yard of river rock weighs approximately 2,400 to 2,700 pounds (1.2 to 1.35 tons). The smooth, rounded stones have more air gaps than crushed stone, making them slightly lighter per cubic yard than angular aggregate.
River rock is smooth, rounded stone typically 1–3 inches, available in various natural colors. Creek stone is smaller (1/2–1 inch) and more uniform. Mexican beach pebbles are highly polished, dark-colored stones with a glossy finish, popular for modern landscaping designs.
Yes, river rock is excellent for drainage applications. Its round shape creates spaces between stones that allow water to flow through freely. It's commonly used in French drains, dry creek beds, rain gardens, and around foundation perimeters.
Copied!