How to Calculate Fill Dirt
What is Fill Dirt?
Fill Dirt Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.
Formula
Compacted Fill (cy) = Length × Width × Depth / 27 × Compaction Factor (1.15)
Step-by-Step Guide
- 1Calculate volume needed, multiply by compaction factor
- 2Apply the formula using your project measurements
- 3Add required safety factors or waste allowances per code
Worked Examples
Input
50 ft × 30 ft × 1 ft fill
Result
Fill = 50×30×1/27 × 1.15 = 63.9 cy
Common Mistakes to Avoid
- ✕Not applying code-required safety factors or derating
- ✕Forgetting to account for waste and cut losses in material estimates
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