Calculator What does the fill dirt calculator estimate?
The fill dirt calculator separates the target compacted volume from the loose volume that must be purchased. Enter finished length, width, compacted depth, an explicit compaction factor of at least 1, and waste. Optional density adds weight; optional unit price adds cost without guessing a currency.
How does the fill dirt calculator formula work?
Target compacted volume is length × width × compacted depth. Required loose volume is compacted volume × compaction factor. Adjusted purchase volume is loose volume × (1 + waste percentage ÷ 100). The fill dirt calculator displays all three instead of hiding the factor inside waste.
Fill dirt calculator worked example
A 10 ft × 10 ft area at 4 in compacted depth is about 0.9439 m³ compacted. With factor 1.2, loose volume is about 1.1327 m³. Adding 5% gives about 1.1893 m³, so the fill dirt calculator rounds a cubic-yard purchase to 2 whole units.
What are the limits of the fill dirt calculator?
The editable factor is an example, not engineering advice. Soil type, moisture, lift thickness, equipment, and specification determine actual compaction. The fill dirt calculator cannot replace field density testing, geotechnical advice, structural-fill requirements, or supplier confirmation.
How does the fill dirt calculator compare with the topsoil calculator?
Topsoil planning starts from coverage and target planting depth. The fill dirt calculator explicitly expands a compacted target into a loose purchase requirement. That different business logic is why changing only the material name would be incorrect.
Fill dirt calculator questions
Is the compaction factor a guaranteed value in the fill dirt calculator?
No. Replace the editable example with a factor supported by the material, equipment, specification, or responsible professional.
Does the fill dirt calculator apply waste before compaction?
No. It first calculates loose volume from the compacted target, then applies waste once to the loose purchase amount.