River Rock Calculator
Calculate volume, weight, and cost for landscaping and construction projects
Calculate River Rock Requirements
What do you want to calculate?
River Rock Type
Area to Cover
Option 1: Enter Length & Width
Option 2: Enter Total Area
Depth & Material Settings
Typical depths: Pathways 2-5cm, Driveways 5-10cm, Decorative areas 3-7cm
Cost Calculation (Optional)
River Rock Calculation Results
Formula: Volume = Area × Depth × (1 + Wastage%)
Calculation: 0.00 m² × 0.000 m × 1.05 = 0.00 m³
Weight: 0.00 m³ × 1425 kg/m³ = 0 kg
Rock type: Standard River Rock (Density: 1425 kg/m³)
Usage Recommendations
Example Calculation
Garden Walkway Project
Project: 10m long × 0.8m wide pea gravel walkway
Depth: 7.5cm thick for comfortable walking
Material: Pea gravel (density 1,788 kg/m³)
Wastage: 5% contingency for installation
Calculation Results
Area = 10m × 0.8m = 8.0 m²
Base volume = 8.0 m² × 0.075m = 0.6 m³
Volume with wastage = 0.6 m³ × (1 + 5%) = 0.63 m³
Weight = 0.63 m³ × 1,788 kg/m³ = 1,126 kg
Final result: 0.63 m³ (1.13 metric tons) of pea gravel needed
Popular Rock Types
Application Tips
Pathways: 2-5cm depth for foot traffic
Driveways: 5-10cm depth for vehicles
Decorative areas: 3-7cm for aesthetics
Install landscape fabric to prevent weeds
Add 5-10% extra for installation waste
Consider edging to contain materials
Understanding River Rock Applications
What are River Rocks?
River rocks are naturally occurring stones found in riverbeds and streams. Water flow over time creates their characteristic smooth, rounded shapes and varied colors. These decorative stones are perfect for landscaping, drainage, and erosion control applications.
Common Applications
- •Garden pathways and walkways
- •Decorative landscaping and mulch alternative
- •Drainage systems and French drains
- •Erosion control and slope protection
Calculation Formula
Volume = Area × Depth × (1 + Wastage%)
Weight = Volume × Rock Density
Where density varies by rock type (700-2700 kg/m³)
Selection Guidelines
- Size: Pea gravel (6mm) for comfort, larger rocks for drainage
- Color: Light colors stay cooler, dark colors absorb heat
- Shape: Rounded rocks shift less than angular stones
- Density: Affects weight, cost, and structural applications