Formula Used
How to Use the Calculator
Choose the calculation mode first. Add every project area separately. Select the correct shape for each space.
Enter the installed stone dust depth. Add compaction and waste allowances. Use supplier density for stronger estimates.
Enter bag, pallet, or bulk details. Add pricing and optional project costs. Submit the form to view results.
Compare volume and weight before ordering. Suppliers may sell different measurement units. Confirm delivery limits before purchasing material.
Example Data
| Project type | Length | Width | Depth | Area | Approximate volume | Planning note |
|---|---|---|---|---|---|---|
| Small patio | 12 ft | 10 ft | 2 in | 120 ft² | 0.74 yd³ before allowances | Add extra for compaction. |
| Garden path | 30 ft | 3 ft | 3 in | 90 ft² | 0.83 yd³ before allowances | Check edge containment first. |
| Shed base | 10 ft | 8 ft | 4 in | 80 ft² | 0.99 yd³ before allowances | Prepare the subgrade evenly. |
| Driveway section | 40 ft | 10 ft | 3 in | 400 ft² | 3.70 yd³ before allowances | Verify structural base requirements. |
Stone Dust Planning Guide
Stone dust is finely crushed stone material. It fills voids beneath many surfaces. Common uses include pavers and pathways.
Depth strongly changes the required quantity. Doubling depth also doubles base volume. Measure several points on uneven ground.
Compaction reduces loose material thickness. Extra quantity helps reach finished depth. Separate waste prevents hidden shortages during placement.
Volume measures occupied space. Weight depends on density and moisture. Supplier tickets may show different delivered weights.
Irregular areas need careful measurement. Divide them into simpler shapes. Add those separate calculated areas together.
Stone dust differs from bedding sand. Drainage and local specifications may differ. Check project requirements before selecting material.
Frequently Asked Questions
How much extra stone dust should I order?
Many projects include compaction and waste allowances. The suitable percentage depends on site conditions. Supplier guidance improves the final order.
Does stone dust weight stay constant?
No, moisture and grading affect bulk density. Loose and compacted material may differ. Use a recent supplier density value.
Should compaction and waste be combined?
They serve different planning purposes. Compaction covers settling after placement. Waste covers spills and uneven surfaces.
Can I calculate several areas together?
Yes, add each area separately. The calculator combines their converted measurements. This helps manage mixed project shapes.
How are circular areas measured?
Enter the circle’s diameter. The calculator derives the radius automatically. It then applies the circular area formula.
What depth should I use?
Depth depends on the project design. Surface type and loading both matter. Follow local specifications and installer recommendations.
Why do bag totals round upward?
Partial bags usually cannot be purchased. Rounding upward prevents material shortages. The exact bag figure remains visible.
How does minimum delivery affect ordering?
Some suppliers enforce minimum bulk quantities. The calculator compares calculated and minimum amounts. The larger quantity becomes the order.
Can the calculator estimate truckloads?
Yes, enter the truck capacity. The order quantity divides by that capacity. Results round upward to whole loads.
Can I calculate coverage from existing material?
Yes, enter the available quantity. Choose its volume or weight unit. Coverage includes selected depth and allowances.
Are results suitable for final purchasing?
Results are planning estimates. Site conditions can change actual needs. Confirm quantities and costs with suppliers.