How to Calculate Gravel Needed for Your Project
Our gravel calculator helps you estimate the exact amount of gravel required for landscaping, driveways, pathways, or construction projects. Whether you need crushed stone, pea gravel, or bank gravel, this tool provides accurate measurements in cubic yards and tons.
Step-by-Step Gravel Calculation
- Measure the length and width of your project area in feet
- Select the desired depth (common depths provided for convenience)
- Choose your gravel type or enter a custom density for specialty materials
- Click calculate to get your instant gravel estimation
Gravel Calculation Formula
The calculator uses this formula: (Length × Width × Depth ÷ 324) × Gravel Density = Tons Needed
Where depth is converted from inches to feet and divided by 27 to get cubic yards.
Recommended Gravel Depths for Common Projects:
- • Driveways: 4-6 inches
- • Paths/Walkways: 2-3 inches
- • Drainage: 8-12 inches
- • Landscaping: 2-4 inches
- • Patio Base: 4-6 inches
- • French Drains: 12 inches
Gravel Coverage Estimates & Tips:
- • 1 cubic yard covers ~100 sq ft at 3 inches deep
- • 1 ton covers ~80-100 sq ft at 2 inches deep
- • Always add 10-15% extra for compaction and spillage
- • For irregular areas, divide into rectangles and calculate separately
- • Consider delivery for large projects (typically 10+ cubic yards)
Frequently Asked Questions
How much gravel do I need for a 10x10 area?
For a 10x10 area (100 sq ft) at 3 inches deep, you'll need about 1 cubic yard (approximately 1.35 tons of pea gravel).
What's the difference between cubic yards and tons?
Cubic yards measure volume while tons measure weight. The conversion depends on the gravel density (typically 1.25-1.4 tons per cubic yard).
Should I buy gravel in bags or bulk?
Bags are convenient for small projects (under 2 tons). For larger projects, bulk delivery is more cost-effective.