Dirt Calculator
Estimate fill dirt for grading, excavation and backfill projects.
Default: 2,000 lbs/cu yd for typical fill dirt.
You need approximately
4.17 cu yd
- Recommended with 10% waste
- 4.58 cu yd
- Estimated weight
- 4.58 tons
How we calculate this
Fill dirt volume uses the standard length × width × depth ÷ 27 formula. Dirt density varies significantly by moisture content and composition, so this calculator lets you override the default 2,000 lbs/cu yd estimate.
Example
Measuring tips
For grading and leveling, measure the low points you need to fill relative to your target grade. For excavation backfill, measure the volume of the void being filled.
Common mistakes
- Not accounting for settling — fill dirt compacts over time and may need a top-up.
- Using topsoil pricing/density assumptions for fill dirt (they differ).
- Forgetting that wet dirt weighs significantly more than dry dirt.
Frequently asked questions
What's the difference between fill dirt and topsoil?
Fill dirt is used for grading and structural backfill and typically contains less organic matter. Topsoil is nutrient-rich and used for planting — see our Topsoil Calculator.
How much does fill dirt weigh per cubic yard?
Roughly 2,000 lbs (1 ton) per cubic yard for dry dirt, more when wet.
Related calculators
Estimates are provided for planning purposes. Actual material requirements may vary based on supplier specifications, compaction, site conditions, installation method, waste, and local code.