Stone Fill Calculator
Calculate the volume of stone needed to fill a space.
2. Material Details
3. Waste & Costs (Optional)
Your Project Estimate
Enter your project's details to generate a complete material estimate.
Accurate Estimates with the Stone Fill Calculator
The stone fill calculator is designed for projects where you need to calculate the volume of a void that needs to be filled with stone. This is common for backfilling behind retaining walls, filling in old pools or ponds, or creating a stable base for a shed or concrete slab.
Properly calculating the volume of stone fill is crucial for both structural integrity and budget management. For retaining walls, using clean, drainage-friendly stone is essential to prevent hydrostatic pressure. This tool helps you determine the cubic yards of fill required to ensure your project is solid, stable, and built to last.
Frequently Asked Questions
What kind of stone is used for backfill?
For backfilling behind a retaining wall, you should use a clean, angular crushed stone (like #57 stone) that allows for good drainage. Avoid using dirt or sand, which can retain water and damage the wall.
How do I calculate backfill for a retaining wall?
Measure the length and height of the wall, and the width of the area behind it you need to fill (typically 12-24 inches). Multiply these three dimensions to get the volume in cubic feet, then use our calculator to convert to cubic yards.
What is 'stone fill'?
Stone fill is simply any type of stone aggregate used to fill a space. The term is broad and the specific type of stone used will depend on whether the project requires drainage, compaction, or just bulk volume.
Do I need to compact stone fill?
Yes, if the fill is supporting a structure like a shed or patio, it should be compacted in layers (lifts) of 6-8 inches to prevent future settling. Use the compaction calculator to understand the impact.
What is the difference between stone fill and sub-base?
They are often the same material, but the term 'sub-base' specifically refers to a compacted layer of stone that sits directly underneath a finished surface like pavers or concrete. 'Stone fill' is a more general term for filling any larger void.
How much does a yard of stone fill weigh?
A cubic yard of typical crushed stone fill weighs around 1.4 to 1.5 tons (2,800 - 3,000 lbs). Our calculator can provide a precise weight based on the material type you select.