Gravel Calculator

Calculate gravel volume, weight, cost, and coverage for rectangular, circular, and triangular areas with step-by-step solutions.

Input

Calculate Gravel

Select a calculation type and enter values to see results with detailed step-by-step solutions.

Complete User Guide

What is Gravel Calculator?

The Gravel Calculator is a comprehensive tool for calculating gravel volume, weight, cost, and coverage for various project shapes. It helps you determine how much gravel you need for rectangular driveways, circular patios, triangular areas, and more. This calculator is essential for landscaping, construction, and DIY projects.

How to Use This Calculator

  1. Select a calculation type from the dropdown (Rectangular Area, Circular Area, Triangular Area, Weight, Cost, Coverage, or Unit Conversion).
  2. Enter the required dimensions (length, width, depth, diameter, etc.) with appropriate units.
  3. Select your preferred result unit (cubic yards, cubic feet, cubic meters, tons, etc.).
  4. Click 'Calculate' to see the results.
  5. Review the detailed results, visualizations, and step-by-step solution.

Calculation Types

Rectangular Area

Calculate gravel volume for rectangular areas like driveways, walkways, and patios. Formula: Volume = Length × Width × Depth.

Circular Area

Calculate gravel volume for circular areas like round patios and fire pits. Formula: Volume = π × (Diameter/2)² × Depth.

Triangular Area

Calculate gravel volume for triangular areas. Formula: Volume = (1/2) × Base × Height × Depth.

Weight from Volume

Calculate gravel weight from volume. Formula: Weight = Volume × Density. Default density: 105 lbs/ft³.

Cost Calculation

Calculate total cost of gravel. Formula: Total Cost = Volume × Price per Unit.

Coverage Area

Calculate coverage area from volume and depth. Formula: Area = Volume / Depth.

Key Gravel Formulas

Rectangular Volume:

V = L × W × D

Circular Volume:

V = π × r² × D

Triangular Volume:

V = (1/2) × B × H × D

Weight:

Weight = Volume × Density

Cost:

Cost = Volume × Price per Unit

Coverage Area:

Area = Volume / Depth

Supported Units

Length Units

  • • Feet (ft)
  • • Yards (yd)
  • • Meters (m)
  • • Inches (in)

Volume Units

  • • Cubic Yards (yd³)
  • • Cubic Feet (ft³)
  • • Cubic Meters (m³)

Weight Units

  • • Tons
  • • Pounds (lbs)
  • • Kilograms (kg)

Important Notes

  • All dimensions must be greater than zero.
  • Depth is typically measured in inches for most projects (2-4 inches is common).
  • Gravel density varies by type: crushed stone (~105 lbs/ft³), pea gravel (~95 lbs/ft³), river rock (~100 lbs/ft³).
  • Always add 5-10% extra for compaction and settling.
  • For irregular shapes, break them into regular shapes and calculate separately.
  • Results are displayed with step-by-step solutions showing the calculation process.
  • Unit conversions are handled automatically.
  • Cost calculations are estimates; actual prices may vary by location and supplier.

Common Applications

  • Driveway and walkway projects
  • Patio and landscaping projects
  • Drainage and French drain installations
  • Base material for concrete slabs
  • Garden paths and decorative areas
  • Construction and road base projects
  • Budget planning and material ordering

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