Adjusted cubic feet
129.6
Free-draining aggregate estimate
Clean Stone Calculator
Estimate clean stone for drainage beds, trench zones, and backfill areas where free drainage matters more than compaction.
Bulk aggregate planning
Crushed stone inputs
Volume plus tonnage estimate
Cubic yards
4.8
Cubic meters
3.67
Estimated tons
6.48
Estimated pounds
12,960
Net area
360 sq ft
Crushed stone calculator variations
Switch between crusher run, clean stone, dense grade aggregate, and decomposed granite while keeping the same core stone calculator.
Variation
Crusher Run Calculator
Estimate crusher run volume, cubic yards, and tons for driveways, shed pads, and compacted base work.
Variation
Clean Stone Calculator
Estimate clean stone volume and tons for drainage beds, pipe zones, backfill, and free-draining aggregate coverage.
Variation
Dense Grade Aggregate Calculator
Estimate dense grade aggregate for compacted road base, driveway base, walkway subbase, and general structural fill.
Variation
Decomposed Granite Calculator
Estimate decomposed granite volume and tons for paths, patios, utility surfaces, and compacted landscape areas.
What it is
A clean stone calculator estimates the quantity of low-fines aggregate needed for drainage-focused work such as trench backfill, drain fields, pipe zones, and open stone beds.
This version is useful because clean stone is usually ordered for performance reasons. The job often depends on getting the gravel section right, not just covering an area visually.
It uses the same volume math as the other stone pages, but the content is tuned for drainage and free-flowing aggregate use cases.
Why it matters
Clean stone work is easy to underestimate because trenches and drain zones can seem small until their full length is multiplied out.
It also matters because drainage systems are sensitive to the actual stone section. If the order is too short, the installation can stall or end up patched unevenly.
Built for drainage
Clean stone is commonly chosen where water needs to move through the aggregate.
Linear jobs grow quickly
A narrow trench can still use a lot of stone over distance.
Delivery planning matters
Drainage work slows down fast if the stone run comes up short.
Hidden work still needs a precise order
Buried aggregate is still expensive and usually not easy to top off efficiently later.
How it works
The calculator finds the area or section first and then multiplies it by stone depth to get total clean stone volume.
That volume is converted into cubic yards and estimated tons using a clean-stone density so the output works for real purchasing decisions.
Measure the drainage footprint
Use the part of the trench or bed that will actually receive stone.
Apply the installed depth
Depth is often what drives the total material need in drainage sections.
Convert with a drainage-style density
The preset is tuned for cleaner, freer-draining aggregate.
Review order-ready outputs
You get cubic yards and tons for supplier and truck planning.
Clean stone formula
Volume = Stone Section Area × Installed Depth
If pipes or chambers take up meaningful space, you can mentally deduct that displacement after using the calculator as your base quantity.
Quick reference examples
These examples are where clean stone estimates usually matter most.
| Example | Why it matters |
|---|---|
| French drain trench | A narrow section can still require meaningful yardage once length is added. |
| Pipe bedding zone | Stone around a long run of pipe adds up faster than people expect. |
| Drainage bed under downspouts | Small beds can still use more aggregate than a bag-based guess suggests. |
| Foundation drain backfill | Perimeter sections multiply quickly around a full building footprint. |
How to use the tool
- 1
Measure the actual stone section
Use the part of the trench or bed receiving clean stone, not the entire excavation blindly.
- 2
Set the real installed depth
Drainage jobs often have a specified gravel thickness that should be estimated honestly.
- 3
Leave some room for field variation
Uneven trench widths and cleanup usually justify a modest allowance.
- 4
Use the output for supplier planning
Both yards and tons are useful because yards may quote one way and dispatch another.
Real-world applications, edge cases, and limitations
Drainage trenches
Useful for French drains, curtain drains, and similar linear stone zones.
Pipe bedding
Helpful where a clean aggregate layer is placed around plumbing or drainage pipe.
Backfill and runoff control
Good for open beds, dry creek sections, and drainage-focused rock installations.
Limitations
Pipe displacement, geotextiles, and irregular trenches may require a field adjustment.
This variation is strongest for drainage and free-draining stone jobs rather than compacted base sections.
It remains a planning estimate. Real trench widths, embedded pipe, moisture, and the exact product can all shift the actual quantity needed.
Frequently asked questions
- What is clean stone?
- Clean stone is washed or low-fines aggregate that drains more freely than dense graded base materials because it contains little or no fines.
- Why is clean stone different from crusher run?
- Crusher run is built to compact. Clean stone is often used where drainage and void space matter more than a tightly packed base.
- Can I use this for trench backfill?
- Yes. It works well for estimating stone around drains, pipe zones, and other sections where a drainage-friendly aggregate is specified.
- Should I include pipe displacement?
- For tighter estimating, yes, but this base version treats the full measured section as stone volume.
Estimate clean stone before drainage work begins
Use this clean stone calculator to estimate cubic yards and tons for drainage beds, trench backfill, and pipe zones before the aggregate is delivered.