A clear result in a few inputs.
- Enter the requested values.Use consistent units and the real values for your scenario.
- Read the main result and breakdown.NumLuma recalculates immediately when an input changes.
- Check the formula and assumptions.Use the supporting context before making a real-world decision.
What this calculator does
Soil estimates combine area and depth to produce volume. NumLuma converts the entered depth from inches to feet, calculates the rectangular cubic-yard volume and then applies the extra allowance you choose.
What to know before you use the result
- Settling and compaction can reduce the final filled height after installation.
- Raised beds with sloped sides or irregular shapes may need a different volume model.
- Bulk soil and bagged soil use different purchase units, so convert using the package volume when needed.
Common mistakes to avoid
- Using planter outside dimensions when thick walls reduce the internal volume.
- Confusing inches of soil depth with feet.
- Assuming delivered soil volume and compacted finished volume are identical.
Where this calculation is useful
Raised bedsTopsoilPlantersLandscape fill
Related concepts
topsoilraised bed soilcubic yardsfill volume