Gravel Calculator
Calculate how much gravel you need for your project
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How to Calculate Gravel Needed
Calculating the right amount of gravel for your project is essential to avoid over-purchasing or running short. Here's what you need to know:
Calculation Method
The basic formula is: Volume = Length × Width × Depth
- For rectangular areas: Simply multiply length × width × depth
- For circular areas: Use π × radius² × depth
- For triangular areas: Use (base × height × depth) ÷ 2
Common Applications
- Driveways: Usually 2-4 inches deep
- Garden Paths: 2-3 inches deep
- Landscaping: 1-2 inches deep
- Drainage Areas: 4-6 inches deep
Tips for Accuracy
- Add 10-15% extra for irregularities and settling
- Consider compaction factor for different gravel types
- Measure depth after compaction for better accuracy